3RW30 pages from Sirius System Manual (Chapter 8)

8
3RW3 semiconductor motor control unit
(soft starter)
Section
Subject
Page
8.1
Specifications/regulations/approvals
8-3
8.2
Device description
8-5
8.2.1
Physical principles
8-6
8.2.2
General device description
8-10
8.2.3
Comparison of the 3RW3 semiconductor motor control unit (soft starter) with the SIKOSTART 3RW22 and 8-14
SIKOSTART 3RW34 motor control units
8.2.4
Comparison of the 3RW3 semiconductor motor control unit (soft starter) with the 3RA star-delta combina- 8-16
tion
8.2.5
Notes on configuration
8-16
8.3
Application and use
8-18
8.3.1
Areas of application and criteria for selection
8-18
8.3.2
Installation guidelines
8-18
8.3.3
Overview tables: correction factors
8-21
8.3.3.1
3RW30/31 soft starters in a stand-alone installation
8-21
8.3.3.2
3RW30/31 soft starters in combination with the 3RV1
8-22
circuit breaker
8.3.3.3
Combining the 3RT contactor with the 3RU1 thermal
overload relay and 3RW3 soft starter
8-24
8.3.3.4
Combining the 3RT contactor with the 3RB10 electronic overload relay and 3RW3 soft starter
8-26
8.3.4
Circuit example
8-29
8.3.5
Commissioning
8-30
8.3.6
Event messages and diagnostics
8-32
8.3.7
Timing diagram
8-33
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3RW3 semiconductor motor control unit
Section
Subject
Page
8.4
Accessories
8-35
8.5
Mounting and connection
8-37
8.5.1
Mounting
8-37
8.5.2
Connection
8-37
8.5.3
Circuit diagrams
8-38
8.6
Dimensioned drawings (dimensions in mm)
8-41
8.7
Technical specifications
8-42
8.7.1
Control electronics/power electronics
8-42
8.7.2
Short-circuit protection and fuse coordination
8-45
8.7.3
Site altitude
8-50
8.7.4
Specifications in acc. with IEC
8-51
8.7.5
Specifications in acc. with NEMA
8-52
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8.1 Specifications/regulations/approvals
The 3RW3 semiconductor motor control units, referred to below more succinctly as soft starters, meet the UL and CSA requirements.
UL/CSA
UL 508
Degrees of protection
offered by housings
EN
DIN standard rail
EN 50 022
Electronic
Motor control units
IEC 60947 - 4-2
Shock protection
IEC 60947 - 1 and DIN 40050
EMC
IEC 60801 - 4 -2 (draft)
General specifications
EN 602 69 - 1A1
Control devices and
switching elements
EN 602 69 - 1A1
Gost
Approved by Gost
CTic
EMC compliance marking for Australia
(similar to CE marking)
Table 8-1: Standards, certificates, and approvals, 3RW3
Normal switching duty
The 3RW3 soft starters can be used for normal switching duty in acc. with
DIN VDE 0100 Part 460:
A switch for normal switching duty must be provided for all circuits that are
to be switched independently of other parts. Switches for normal switching
duty do not necessarily all switch active conductors of a circuit.
Isolation
The soft starters do not meet the requirements for isolation
in acc. with DIN VDE 0100 Part 460 and EN 60 947-1:
Every circuit must be capable of being isolated from the active conductors
of the power supply.
Circuit groups can be isolated by a common device if this is permitted by the
operating conditions. In the open position, devices with an isolating function
must have a corresponding isolating distance and an indicator showing the
positions of the moving contacts.
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Warnings
Caution
Important
The devices are all carefully tested at the
factory and are not shipped unless they
are found to be in proper working order.
However, they may be subjected to
stresses during transportation over which
we have no control.
The 3RW3...-1.B1. soft starter was built as
a class A device. Using this product in residential buildings could cause radio interference.
Consequently, the impulse series relays in
the main circuit may be in an undefined
switching state.
In the interests of complete safety, the
following procedure should be used at
commissioning or after the replacement
of the SIRIUS soft starter:
First, apply the supply voltage in order to
put the impulse series relays in a defined
switching state.
Then, switch the main circuit on.
If you deviate from this procedure, the
motor can be switched on inadvertently
and cause damage to people or parts of
the system.
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8.2 Device description
The SIRIUS 3RW3 soft starters are part of the SIRIUS modular system. They
are compatible with the other SIRIUS switching devices.
The possible combinations are:
• 3RW3 soft starter + 3RV circuit breaker
• 3RW3 soft starter + 3RU/3RB overload relay + 3RT contactor
The link modules used for combinations of contactors and circuit breakers
are used for this (see Section 8.3.2, "Installation guidelines").
Fig. 8-1: 3RW3 soft starter
3RW30/31 frame sizes
The 3RW30 soft starter is available in four frame sizes: S00, S0, S2, and S3.
The 3RW31 soft starter is available in frame size S0.
The following table contains the power ranges of the various frame sizes (all
specifications apply to UN = 400 V and 40 ° C ambient temperature):
Frame size S00
Frame size S0
Frame size S2
Frame size S3
1.1 - 4 kW
5.5 - 11 kW
15 - 22 kW
30 - 55 kW
6-9A
12.5 - 25 A
32 - 45 A
63 - 100 A
(W x H x D) (mm)
45 x 97.5 x 93
(W x H x D) (mm)
45x125x119
(W x H x D) (mm)
55 x 160 x 143
(W x H x D) (mm)
70x170x178
Table 8-2: 3RW3, frame sizes
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8.2.1 Physical principles
Starting current
Three-phase current asynchronous motors have a high inrush current
I(starting). This inrush current can be between three and fifteen times as high
as the rated operational current, depending on the type of motor. A figure
between seven and eight times the rated operational current can be postulated as typical.
I
Istarting
Irated
I0 (no-load)
nrated nsyn
n
Mcusp
M
Mmotor
Mstarting
Mload
Msaddle
Maccel
Mrated
Mmotor
Mload
nrated nsyn
n
Fig. 8-2: Typical current and torque curve of a three-phase asynchronous motor
Important
This starting current must be taken into consideration in the design of the
supply network, among other things by adapting the supply (high heat development) and the fusing (inadvertent tripping of the fuses).
Reducing the starting
current
There are various ways of reducing the starting current:
• By star-delta starter
• By frequency converter
• By soft starter
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Star-delta starter
After a delay, the motor windings are switched from a star to a delta configuration. The motor current for star starting is only about 1/3 of that required
for delta starting (motor torque, too, is reduced to approximately 1/3 of the
delta torque).
Disadvantages:
• 6 motor cables are necessary
• Switching surges occur (in the current and torque transients)
• The startup cannot be adapted to the system environment
• Installation is relatively complicated and time-consuming
• More space is needed in the cubicle
I
IAd
M
Starting current for d
MAd
Mmotor ford
Mload
Starting current
for */d-start
IA*=
1/3 IA d
Mmotor for*
=1/3 MAd
MA*
n
n
nsyn
*nrated
n
n
nsyn
*nrated
Fig. 8-3: Current and torque curves for star-delta starting
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Frequency converter
A frequency converter converts the AC voltage from the grid to direct voltage, which can then be converted to any voltage and frequency.
The illustration below shows how a frequency converter works:
U
0V
t
Fig. 8-4: Method of operation of a frequency converter
Disadvantages:
• Relatively complicated wiring needed in order to meet radio interference
suppression requirements; filters are often essential.
• Line capacitances limit the lengths of motor feeder cables; it may be necessary to use chokes, sinus filters, or even dV/dt filters.
• Expensive
• System startup is complex and time-consuming on account of the multiplicity of operating parameters.
• It can be necessary to use shielded motor feeder cables.
Advantages:
• Motor speed is variable; speed can be accurately pegged at constant levels.
The U/f ratio remains virtually constant. It is therefore possible to achieve
high torques at relatively low currents.
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Soft starter
With a soft starter, motor voltage is increased from a selectable starting
voltage to the rated voltage by phase firing within a defined starting time.
Motor current is proportional to the motor voltage, so the starting current is
reduced by the factor of the defined starting voltage.
The illustration below shows how the 3RW3 soft starter works:
UL1- L3
α
α
α
α
ϕ
L1
UL1- L3
M
3~
L2
L3
G1
Fig. 8-5: Phase firing of the supply voltage by semiconductor elements in the 3RW3 soft starter
Example:
Starting voltage 50 % of Ue => starting current equals 50 % of the motor
starting current for direct-on-line starting.
A soft starter also reduces motor torque. This is the reason why a softstarted motor does not jerk into action.
The relationship is as follows: The motor torque is proportional to the square
of the motor voltage.
Example:
Starting voltage 50 % of Ue => starting torque 25 % of the starting torque
for direct-on-line starting.
Advantages:
• Less space needed in the cubicle
• No protective circuits (e.g. filters) necessary to comply with the radio
interference suppression specifications (class A; in UC 24 V control voltage version also class B)
• Lower installation costs
• Straightforward system startup
• Only 3 motor feeder cables, half as many as are needed for a star-delta
starter
• Adjustment options permit adaptation to the system.
Disadvantages:
• Long-term speed settings not possible.
• Lower torque at reduced voltage
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I
M
100% Ugrid
Istartingf
Istarting
0.7 x
Istartingf
0.5 x
100% Ugrid
Mstarting
70% Ugrid
70% Ugrid
50% Ugrid
Mstarting
0.49 x
50% Ugrid
Mstarting
0.25 x
nsyn
n
nsyn n
Fig. 8-6: Current and torque curves for a soft starter
8.2.2 General device description
The SIRIUS modular system offers a variety of alternatives for load feeders.
In addition to the star-delta starters (see Chapter 5, "3RA fuseless load feeders"), the SIRIUS 3RW3 soft starters are also available.
The 3RW3 soft starters can be combined with the following SIRIUS devices:
• 3RT contactors
• 3RV circuit breakers
• 3RU thermal overload relays
• 3RB10 electronic overload relays
They are all mounted and connected up in the same way.
Please note the relevant guidelines in Section 8.3.2.
Functions of the load feeder
Normal switching
duty
Normal switching duty of a circuit can, according to the definitions of isolation and normal switching data in DIN VDE 0100 (see Section 8.1), be implemented with a contactor or a soft starter alone.
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Isolation
According to DIN VDE 0100, isolation from the supplying network cannot be
provided by a semiconductor element (i.e. soft starter, frequency converter,
contactor, or similar).
To implement isolation from the supplying network, a 3RV circuit breaker (or
another isolating device that fulfills the requirements of DIN VDE 0100)
must be used in addition to the contactor or soft starter. A contactor alone
in combination with the soft starter is not enough.
Both isolation and normal switching duty can be implemented quickly and
easily with the 3RW3 soft starter in combination with the modules from the
SIRIUS modular system.
Variants
The electronic soft starters are available in two variants:
Standard 3RW30 variant
The standard 3RW30 variant is used for single-speed motors. This variant is
available in all four frame sizes. The starting voltage Us, starting time tRon,
and coasting-down time tRoff can be set independently of each other on the
device. The device is switched on by means of a cycling contact IN.
3RW31 special variant
The 3RW31 special variant cycles pole-changing motors (Dahlander winding). The following can be set independently of each other:
• Starting voltage Us
• Starting time of initial speed tR1
• Starting time of second speed tR2
The device does not have a coasting-down function. The set starting voltage
applies to both ramp times tR1 and tR2.
The ramp time is selected by means of two inputs, IN1 and IN2, that switch
the soft starter on.
The devices of the 3RW31 series are only available in frame size S0.
Settings
The devices can be set as follows:
3RW30
By means of 3 potentiometers for setting:
• Starting time in the range from 0 to 20 seconds
• Starting voltage in the range from approx. 30 to 100 % of the rated voltage of the motor
• Coasting-down time in the range from 0 to 20 seconds
3RW31
By means of 3 potentiometers for setting:
• Starting time 1 in the range from 0 to 20 seconds
• Starting voltage in the range from approx. 30 to 100 % of the rated voltage of the motor
• Starting time 2 in the range from 0 to 20 seconds
A special software program ensures that progressive ramp times are set.
Short times of up to 5 seconds can thus be set very precisely.
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Auxiliary contacts
3RW30
In the case of frame sizes S0 to S3, the following auxiliary contacts are integrated:
• "ON": When triggered, the latching signal is used for locking by means of a
simple on/off pushbutton (contact designation 13/14).
• "BYPASSED": With the end-of-startup signal, control valves can be
addressed after soft starting of a pump, for example, in order to enable
pumping (contact designation 23/24).
The devices of frame size S00 do not have any auxiliary switches.
3RW31
The 3RW31 does not have any auxiliary contacts.
Soft starting function
Torque-reduced start for three-phase asynchronous motors:
Triggering is two-phase, which means that the current is kept low throughout the run-up phase. Current peaks such as those that occur in a star-delta
start at the changeover from star to delta are prevented by continuous voltage management.
Transient current peaks (inrush peaks) are automatically avoided in each
switch-on procedure by a special control function of the power semiconductors.
Soft coasting-down
function
The integrated soft coasting-down function prevents the drive coming to an
abrupt halt when the motor is switched off.
3RW30 time ramps
The following graphics show the time ramp of the 3RW30 and the timing
diagram of the auxiliary contacts:
U
UN
ON
13/14
Us
BYPASSED 23/24
tR on
tR off
t
tR on
3RW30: Time ramp
tR off
Timing diagram of the auxiliary
contacts
Fig. 8-7: Time ramp/timing diagram, 3RW30
The graphic below shows the time ramp of the 3RW3:
U
UN
Us
tR1
tR2
t
Fig. 8-8: Time ramp, 3RW31
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Accessories
A fan can be snapped into the soft starter housing of frame sizes S0 to S3
from below. This brings the following benefits:
• Improved range of options for the installation position
• Increase in the switching frequency (see Section 8.3.2, "Installation guidelines")
In the case of frame sizes S0 and S2, extended terminal covers can be
mounted on the box covers in order to cover the cable ends and keep them
safe from fingers. These are identical to the extended terminal covers of the
SIRIUS 3RT contactors of the same frame sizes.
In the case of frame size S3, terminal covers are available for lug connection
or bar connection. These, too, are identical to the accessory parts of the corresponding SIRIUS contactor size.
See Section 8.4 for details of other accessories.
Mounting
The devices are attached to the 3RV circuit breakers by means of a link module and are thus connected mechanically and electrically. This link module is
identical to the one that is used for the corresponding contactor/circuitbreaker combinations. This installation variant offers all the advantages of a
fuseless load feeder.
Link modules
The following link modules are used to combine 3RW3 soft starters and
3RV1 circuit breakers:
Frame size
Link module
S00
3RA1911-1A
S0
3RA1921-1A
S2
3RA1931-1A
S3
3RA1941-1A
Table 8-3: Link modules
Connection
The 3RW3 electronic soft starters are available with screw-type terminals.
Plus-minus POZIDRIV 2 screws are used.
The SIGUT terminal system is used (captive screws, contacts open on delivery, etc.).
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8.2.3 Comparison of the 3RW3 semiconductor motor control unit (soft starter) with the
SIKOSTART 3RW22 and SIKOSTART 3RW34 motor control units
Soft starters are available for different applications.
The following graphic provides an overview of the different soft starters:
Functions
High
End
SIKOSTART 3RW22
Low
End
12/16/25A
SIKOSTART 3RW34
2 phase
in-line only
S0
S3
S2
+ 575V+
auxiliary contacts SIRIUS
3RW30/31 soft starters
S00
6/9A
5.5
11
22
45
710
1000
Power in kW
at 400 V
Fig. 8-9: Overview of soft starters
SIKOSTART 3RW22
The SIKOSTART 3RW22 is suitable for drives that place high demands on
the functionality of the starter. It covers a power range from 3 kW to 710 kW
(at 400 V).
SIKOSTART 3RW22 offers the following:
• Soft starting and soft coasting down
• Break-loose torque
• DC brakes
• Energy-saving operation
• Temperature monitoring
• Operation using a PC and an RS232 interface
• Selection and configuration program
• Current and voltage limitation
• Pump functionalities (e.g. pump coasting down)
• Startup detection
• Three parameter sets
• Different coasting-down types
• Electronic device overload protection
The SIKOSTART 3RW22 application manual presents the various application
areas and circuit variants (order no. E20001-P285-A484-V3).
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SIKOSTART 3RW34
The SIKOSTART 3RW34 is suitable for drives with low demands in terms of
the functionality of the soft starter. The SIKOSTART 3RW34 is very similar to
the SIRIUS 3RW3 soft starter in terms of its operation and configuration. It
covers a power range of up to 1000 kW (400 V).
The functions of the 3RW34 are as follows:
• Soft starting and soft coasting down
• 2 circuit variants: standard and root 3 circuits
• Three-phase control
• Optional AS-Interface bus control
You will find the technical specifications and a detailed description of the
3RW34 in the document describing SIKOSTART 3RW22/3RW34 solid-state
motor controllers (order no.: E20001-A200-P302).
SIRIUS 3RW3 soft
starter
The SIRIUS 3RW3 soft starter covers the power range from 1.5 kW to
45 kW.
Power semiconductors always exhibit power loss. This manifests itself in
heat generation. In order to keep this power loss as low as possible, the
semiconductors are bypassed by relay contacts after the motor has started
up. The device's heat sink and its dimensions can thus be smaller than they
otherwise would be. In addition, it is necessary to use a bypass contactor,
which bypasses the line semiconductors in the conventional configuration.
For further processing in the system controller, the device offers two relay
outputs:
• "ON" contact (terminals 13/14), which can be used, for example, to control
the soft starter by button (locking)
• "BYPASSED" contact (terminals 23/24), which signals the completion of
startup (e.g. in order to switch a solenoid valve after a soft-started pump
has started up)
For drives in this power range, good motor startups can be achieved with a
two-phase controller.
In the case of a two-phase controller, semiconductor elements are only
used in two phases in order to reduce motor current and motor voltage in all
three phases. The third phase is bypassed internally in the soft starter.
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8.2.4 Comparison of the 3RW3 semiconductor motor control unit (soft starter)
with the 3RA star-delta combination
The comparison of soft starter and star-delta combinations shows that the
3RW3 has the following advantages (example here 22 kW):
3RW3 soft starter
3RA star-delta starter
Width: 55 mm
Width: 165 mm
Wiring: 3 motor supply leads
Wiring: 6 motor supply leads
Selectable startup parameters
None
Minimum current values at startup
Fixed current ratios (I * = 1/3Id)
No dangerous switchover current peaks
Switchover current peaks when switching
from star to delta
Special variant for Dahlander motors
—
Soft coasting-down function
—
Table 8-4: Comparison of 3RW3/3RA
8.2.5 Notes on configuration
In order for a motor to reach its rated speed, motor torque at any given time
during startup must be greater than the torque needed by the load, since
otherwise a stable operating point would be reached before the motor
achieved its rated speed (the motor would "drag to a stop"). The difference
between motor torque and load torque is the accelerating torque that is
responsible for the increase in the speed of the drive. The lower the accelerating torque, the longer the motor needs to run up to its operating speed.
Starting torque
Reducing the terminal voltage of a three-phase asynchronous motor
reduces the motor's starting current and the starting torque.
Current is directly proportional to voltage, whereas voltage is proportional to
the square root of motor torque.
Example:
Motor = 55 kW, rated current = 100 A, starting current = 7 x rating current,
motor torque = 355 Nm, starting torque = 2.4 x rated torque
Settings for the soft starter: starting voltage 50 % of rated voltage for motor
The reductions are thus as follows:
• The starting current is reduced to half the starting current for a direct
start: 50 % of (7 x 100 A) = 350 A
• Starting torque is reduced to 0.5 x 0.5 = 25 % of the starting torque for a
direct start: 25 % of 2.4 x 355 Nm = 213 Nm
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Note
On account of the fact that the starting voltage is proportional to the square
root of the motor torque, it is important to ensure that the starting voltage is
not too low. This applies particularly for a pronounced saddle torque, the
lowest motor torque that occurs during run-up to rated speed.
Mmotor
M
Mstarting
Mmotor with
SIRIUS soft starter
Mload
MB
MB = accelerating torque
of the motor
Mstarting
with
SIRIUS
Soft starter
n
U
Ue
US
tR
t
Fig. 8-10: Load and motor torques and motor terminal voltage for operation with soft starter
Criteria for selection
Note
In the case of the SIRIUS 3RW30/31 soft starters, the corresponding soft
starter must be selected on the basis of the rated current for the motor (the
rated current of the soft starter must be ≥ the rated current for the motor).
The 3 potentiometers on the starter are for setting the starting voltage, the
starting time, and the coasting-down time.
The soft starter is correctly set when the motor starts smoothly and runs up
rapidly to its rated speed.
Ramp times of up to 20 seconds can be set.
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8.3 Application and use
8.3.1 Areas of application and criteria for selection
The SIRIUS 3RW3 soft starters offer an alternative to star-delta starters (see
Section 8.2.4 for a comparison and the advantages).
The most important advantages are soft starting and soft coasting-down,
interruption-free switching without current spikes that could interfere with
the supply system, and compact dimensions.
Many drives that needed frequency converters in the past can be changed
to soft-start operation with the 3RW3, if the applications do not call for variations in speed.
Applications
Typical applications include, for example:
Conveyor belts, conveyor systems:
• Smooth starting
• Smooth slowing
• Use of better-value conveyor material
Rotary pumps, piston-type pumps
• Avoidance of pressure surges
• Extended service life of the piping system
Agitators, mixers:
• Reduced starting current
Fans:
• Less strain on gearing and drive belts
Cooling time
Note
The cooling time must be taken into consideration in the starting frequency.
8.3.2 Installation guidelines
On account of the heat generated, certain installation guidelines must be
adhered to when combining 3RW30/31 soft starters with other SIRIUS
switching devices.
Stand-alone installation
Stand-alone installation is when minimum vertical and lateral clearances
between the mounted devices are not violated. This applies both to individual devices and complete load feeders.
The following minimum clearances must be adhered to in stand-alone installation (these minimum clearances depend on the frame size):
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Frame size
Minimum clearance on
both sides in mm
S00
15
S0
20
S2
30
S3
40
3RW30
Table 8-5: Stand-alone installation, minimum clearances at the side, 3RW3
Frame size
Vertical
Vertical
clearance a clearance b
S00
50
50
S0
60
40
S2
50
30
S3
60
30
a
3RW30
b
Table 8-6: Stand-alone installation, minimum clearances at the side, 3RW3
Line lengths for the
drive circuit
The control inputs for starting and stopping are not rated for longer distances. This means:
• In the case of a drive circuit that goes beyond the control cubicle, coupling relays must be used.
• The control cables in the cubicle should not be laid together with main circuit cables.
When electronic output modules are used in the drive circuit (e.g. Triac outputs at 230 VAC), RC elements (e.g. 3TX7462-3T or similar with C > 100 nF)
may be required at the control inputs under certain circumstances.
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Correction factors
If the minimum clearances are violated, in a combination of a soft starter
with a circuit breaker, fixed correction factors must be used to determine
the rated current for the device and the switching frequency.
The following variables can be modified by means of correction factors:
• Rated current for the device
• Switching frequency
• Current setting of the circuit breaker
• Current setting of the overload relay
Correction factor for the
rated current of the
device
A factor is specified by which the device rated current of the soft starter is
reduced.
Correction factor for
switching frequency
The switching frequency is the maximum permissible number of starts per
hour. This value must be adjusted by the specified correction factor. The
number of permissible starts per hour is given in Table 8.7.1, Control electronics/power electronics, in Section 8.7, Technical specifications.
The specified correction factors refer to the following operating conditions:
S4 operation, 40 °C ambient temperature, 30 % duty cycle
Example:
Correction factor for the rated current of the device = 0.9
Selected device = 3RW3014-1CB14 (under normal conditions at 40 °C a
device rated current of 6 A)
This results in an actual device rated current of:
0.9 x 6 A = 5.4 A
Example:
Correction factor for the switching frequency = 1.5
Selected device = 3RW3014-1CB14 (has a maximum switching frequency of
30 starts per hour under the conditions specified above)
This results in a corrected switching frequency of:
1.5 x 30 = 45 starts per hour
To increase the switching frequency, it is also possible to use a larger
device.
Correction factor for the
current setting of the
circuit breaker
In combinations of a 3RW30 soft starter and a 3RV1 circuit breaker, the set
value of the circuit breaker may have to be corrected appropriately. The correction factor specifies the extent of the change.
Example:
Correction for the current setting of the circuit breaker: 1.1
Selected device = 3RW3014-1CB14
The connected motor has a motor rated current of 5 A.
The set value of the circuit breaker must be changed to:
1.1 x 5 A = 5.5 A
SIRIUS System Manual
8-20
GWA 4NEB 430 0999-02c
3RW3 semiconductor motor control unit
Correction factor for the
current setting of the
overload relay
In combinations of a 3RW30 soft starter + 3RU1 thermal overload relay or
3RW30 software starter + 3RB10 electronic overload relay, the set value of
the overload relay must be corrected appropriately. The correction factor
specifies the extent of the change.
Example:
Correction factor for the current setting of the overload relay 0.9
Selected device = 3RW3014-1CB14
The connected motor has a motor rated current of 5 A.
The set value of the overload relay now has to be changed to:
0.9 x 5 A = 4.5 A
8.3.3 Overview tables: correction factors
The tables below give the correction factors for the circuit-breaker current
setting, the device rated current, and the switching frequency.
The values indicate the difference between use with a fan (accessory) and
use without a fan.
All correction fans apply throughout the entire temperature range (i.e. for
40 °C, 50 °C, and 60 °C).
The various tables specify the values in turn for the following:
3RW30/31 soft starters in a stand-alone installation
3RW30/31 soft starter + 3RV1 circuit breaker
3RW30/31 soft starter + 3RT1 contactor + 3RU1 thermal overload relay
3RW30/31 soft starter + 3RT1 contactor + 3RB10 electronic overload relay
8.3.3.1
3RW30/31 soft starters in a stand-alone installation
Minimum clearance
In the case of frame size S00 (3RW301..), the following applies to standalone, vertical installation without directly attached switching devices:
In order to maintain the required space above the arc chute, clearance of at
least 50 mm must be maintained to grounded parts above and below.
SIRIUS System Manual
GWA 4NEB 430 0999-02c
8-21
3RW3 semiconductor motor control unit
3RW30/31 correction
factors
3RW30/31 soft starters not combined with any other switching devices:
Without fan
With fan
Stand-alone installation
Stand-alone installaInstalled side by side tion
or
side by side
Correction factor
Correction factor
Correction factor
Order number
Frame
size
Device
Rated cur- Switching Rated cur- Switching Rated cur- Switching
rated cur- rent for
frequency rent for
frequency rent for
frequency
rent in A at the device
the device
the device
40 °C
3RW3014-1CB..
S00
6
1
1
1
0.75
- 1)
3RW3016-1CB..
S00
9
1
1
1
0.75
- 1)
- 1)
3RW3.24-1AB..
S0
12.5
1
1
1
0.65
1
1.8
3RW3.25-1AB..
S0
16
1
1
1
0.65
1
1.8
3RW3.26-1AB..
S0
25
1
1
1
0.65
1
1.8
3RW3034-1AB..
S2
32
1
1
1
0.65
1
1.8
3RW3035-1AB..
S2
38
1
1
1
0.65
1
1.8
3RW3036-1AB..
S2
45
1
1
1
0.65
1
1.8
3RW3044-1AB..
S3
63
1
1
1
0.8
1
1.6
3RW3045-1AB..
S3
75
1
1
1
0.75
1
1.6
3RW3046-1AB..
S3
100
1
1
1
0.7
1
1.6
- 1)
Table 8-7: Correction factors, 3RW30/31
1) The SIRIUS 3RW301.. soft starters cannot be operated with a fan.
8.3.3.2
3RW30/31 soft starters in combination with the 3RV1 circuit breaker
3RV
Link module
3RW
3k
M
Fig. 8-11: 3RW3 soft starter + 3RV1 circuit breaker
Dimensioning of the
circuit breaker
The frame size selected for the circuit breaker should be large enough so
that the current value calculated can just be set.
In the event of current values that are lower than can be set for the specified circuit breaker, the next smaller circuit breaker must be used.
SIRIUS System Manual
8-22
GWA 4NEB 430 0999-02c
GWA 4NEB 430 0999-02c
Order number
63
75
100
32
38
45
3RV1041-4JA10
3RV1041-4KA10
3RV1041-4MA10
3RV1031-4EA10
3RV1031-4FA10
3RV1031-4GA10
(45 - 63) A
(57 - 75) A
(80 - 100) A
(22 - 32) A
(28 - 40) A
(36 - 45) A
(9 - 12.) A
(11 - 16) A
(20 - 25) A
1
1
1
1
1
1
1
1
1
0.85
0.8
0.75
0.65
0.85
0.85
0.5
0.5
0.75
1) = SIRIUS 3RW301 .. soft starters cannot be used with a fan
S3
S3
S3
Frame size
3RW3044-1AB..
3RW3045-1AB..
3RW3046-1AB..
Device rated current in A
at an ambient temperature of 40 °C
S2
S2
S2
Order number
Circuit breaker
3RW3034-1AB..
3RW3035-1AB..
3RW3036-1AB..
Adjustment range
Circuit breaker
3RV1021-1KA10
3RV1021-4AA10
3RV1021-4DA10
Correction factor
Rated current for the device
12.
16
25
Correction factor
Switching frequency
S0
S0
S0
Correction factor
Current setting of the circuit breaker
3RW3.24-1AB..
3RW3.25-1AB..
3RW3.26-1AB..
1
1
1
1
1
1
1
1
1
Correction factor
Rated current for the device
0.95
0.9
0.85
0.9
0.95
0.9
1
1
0.
0.6
0.5
0.55
0.45
0.35
0.4
0.5
0.5
0.5
0.5
0.5
Correction factor
Switching frequency
1
1
1.1
1.1
1.1
1.1
1.1
1.1
1.
1.
1.
1.
1.
Correction factor
Current setting of the circuit breaker
1
1
1
1
1
1
1
1
1
1
1
— 1)
— 1)
Correction factor
Rated current for the device
0.9
0.9
1.6
1.6
1.6
2.2
1.8
1.8
1.
1.
1.
— 1)
— 1)
Correction factor
Switching frequency
1
1
1
1
1
1
1
1
1
1
1
— 1)
— 1)
Correction factor
Current setting of the circuit breaker
(4.5 - 6.3) A
(7 - 10) A
1
1
1
1
1
1
1
1
1
— 1)
— 1)
Correction factor
Rated current for the device
3RV1011-1GA10
3RV1011-1JA10
1.3
1.3
1.2
1.9
1.7
1.7
1.7
1.7
1.7
— 1)
— 1)
Correction factor
Switching frequency
6
9
1.1
1.1
1.1
1.1
1.1
1.1
1.1
1.1
1.1
— 1)
— 1)
Correction factor
Current setting of the circuit breaker
S00
S00
With fan
With fan
Stand-alone installation Installed side by side
Correction factors:
3RV1 + 3RW30/31
3RW3014-1CB..
3RW3016-1CB..
Without fan
Without fan
Stand-alone installation Installed side by side
3RW3 semiconductor motor control unit
Combination of a 3RV1 circuit breaker + 3RW30/31 soft starter:
Table 8-8: Correction factors: 3RV1 circuit breaker + 3RW3 soft starter
SIRIUS System Manual
8-23
3RW3 semiconductor motor control unit
8.3.3.3
Combining the 3RT contactor with the 3RU1 thermal overload relay and 3RW3 soft starter
Frame size of the
overload relay
The frame size selected for the overload relay should be large enough so
that it is just possible to set the current value calculated.
In the event of current values that are lower than can be set for the specified overload relay, the next smaller overload relay must be used.
Important
It is not permissible to mount the thermal overload relay under the contactor/connecting lead/soft starter combination.
The overload relay must be integrated in the feeder before the contractor/
connecting lead/soft starter combination. The specified correction factors
apply only to this permissible mounting sequence.
Rail 1:
Combination of 3RT1 contactor and 3RU1 thermal overload relay
3RT
3RT
3RU1
Rail 2:
3RW3 soft starter
Connecting
lead
3RW
3RW
3RU1
Fig. 8-12: 3RT+3RU1+3RW3 combination
Minimum clearance
For thermal reasons, a minimum clearance is necessary between the contactor/overload relay combination and the soft starter, as is a minimum
length of the connecting leads.
The following table specifies the minimum clearances and minimum lengths
of the connecting leads for the various frame sizes:
Frame size
Minimum clearance between Minimum length of the
rail 1 and rail 2
connecting lead
(center to center) in mm
in mm
S00
160
100
S0
200
150
S2
240
200
S3
300
250
Table 8-9: 3RW3 installation guidelines, minimum clearances/lengths
SIRIUS System Manual
8-24
GWA 4NEB 430 0999-02c
GWA 4NEB 430 0999-02c
S0
S0
S0
S2
S2
S2
S3
S3
S3
Order number
3RW3.24-1AB..
3RW3.25-1AB..
3RW3.26-1AB..
3RW3034-1AB..
3RW3035-1AB..
3RW3036-1AB..
3RW3044-1AB..
3RW3045-1AB..
3RW3046-1AB..
Setting range of the overload relay
Order number
Therm. overload relay
Contactor order number
Device rated current in A
at an ambient temperature of 40 °C
63
75
100
32
38
45
(22-32)A
(28-40)A
(36-45)A
3RT1044-1A.. 3RU1146-4JBO (45-63) A
3RT1045-1A.. 3RU1146-4KBO (57-75) A
3RT1046-1A.. 3RU1146-1MBO (80-100)
A
3RT1034-1A.. 3RU1136-4EBO
3RT1035-1A.. 3RU1136-4FBO
3RT1036-1A.. 3RU1136-4HBO
Correction factor
Rated current for the device
0.95
0.95
0.9
0.95
0.95
0.9
0.9
0.85
0.8
0.7
0.9
0.95
0.9
0.9
0.8
1
1
1
1
1
1
1
1
1
0.9
0.9
0.8
0.9
0.9
0.8
0.9
0.9
0.8
0.65
0.5
0.55
0.45
0.35
0.45
0.55
0.55
0.55
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1.6
1.6
1.6
2.2
1.8
1.8
1.8
1.8
1.8
— 1)
— 1)
1
1
1
— 1)
— 1)
Correction factor
Rated current for the device
0.95
0.95
0.9
Correction factor for switching frequency
0.75
0.8
Correction factor for switching frequency
12.5 3RT1024-1A.. 3RU1126-1KBO (9-12.5)A
16 3RT1025-1A.. 3RU1126-4ABO (11-16)A
25 3RT1026-1A.. 3RU1126-4DBO (22-25)A
Correction factor
Set value for th. overload relay
0.9
0.8
Correction factor
Rated current for the device
1
1
Correction factor for switching frequency
1
0.95
Correction factor
Set value for th. overload relay
0.95
0.9
0.92
0.92
0.92
0.92
0.92
0.92
0.95
0.95
0.95
— 1)
— 1)
Correction factor
Current setting of the circuit breaker
3RU1116-1GBO (4.5 - 6.3)
3RU1116-1JBO
A
(7 - 10) A
1
1
1
1
1
1
1
1
1
— 1)
— 1)
Correction factor
Rated current for the device
3RT1015-1A..
3RT1016-1A..
1.5
1.5
1.5
1.9
1.7
1.7
1.7
1.7
1.7
— 1)
— 1)
Correction factor for switching frequency
6
9
With fan
Installed side by side
0.92
0.92
0.92
0.92
0.92
0.92
0.95
0.95
0.95
— 1)
— 1)
Correction factor
Set value for th. overload relay
1) = SIRIUS 3RW301 .. soft starters cannot be used with a fan.
Frame size
S00
S00
Without fan
With fan
Installed side by side Stand-alone installation
Correction factors: 3RT
+ 3RU1 + 3RW30/31
3RW3014-1CB..
3RW3016-1CB..
Without fan
Stand-alone installation
3RW3 semiconductor motor control unit
Combination of the 3RT1 contactor with an attached 3RU1 thermal overload
relay/connecting lead/3RW30/31 soft starter:
Table 8-10: Correction factors, 3RT contactor + 3RU therm. overload relay + 3RW soft starter
SIRIUS System Manual
8-25
3RW3 semiconductor motor control unit
8.3.3.4
starter
Combining the 3RT contactor with the 3RB10 electronic overload relay and 3RW3 soft
The contactor, electronic overload relay, and soft starter can be connected in
two ways:
• Combining a 3RT1 contactor with an attached 3 RB10 electronic overload
relay, a connecting lead, and a 3RW30/31 soft starter
• Combining a 3RT1 contactor with a connecting lead and a combination of
a 3RW30/01 soft starter with an attached 3RB10 electronic overload relay
3RT + 3RB10 + connecting lead + 3RW3
Rail 1:
Combination of a 3RT1 contactor and
a 3RB10 electronic overload relay
3RT
3RB10
Connecting
lead
Rail 2:
3RW30/31 soft starter
3RW
Fig. 8-13: 3RT+3RB10+3RW3 combination
Minimum clearance
For thermal reasons, a minimum clearance is necessary between the contactor/overload relay combination and the soft starter, as is a minimum
length of the connecting leads.
The following table specifies the minimum clearances and minimum lengths
of the connecting leads for the various frame sizes:
Frame size
Minimum clearance between Minimum length of the
rail 1 and rail 2
connecting lead
(center to center) in mm
in mm
S00
160
100
S0
200
150
S2
240
200
S3
300
250
Table 8-11: 3RT + 3RB10 + 3RW3 installation guidelines, minimum clearances/minimum lengths
SIRIUS System Manual
8-26
GWA 4NEB 430 0999-02c
3RW3 semiconductor motor control unit
3RT + connecting lead +
3RB10 + 3RW3
Rail 1:
3RT1 contactor
Rail 2:
Combination of 3RW30/31 soft
starter and 3RB10 electronic
overload relay
3RT
3RW
3RB10
Fig. 8-14: 3RT+3RW3+3RB10 combination
Minimum clearances
Frame size
Minimum clearance between Minimum length of the
rail 1 and rail 2
connecting lead
(center to center) in mm
in mm
S00
100
100
S0
140
150
S2
180
200
S3
240
250
Table 8-12: 3RT1 + 3RW30/31 + 3RB10 installation guidelines, minimum clearances/minimum
lengths
SIRIUS System Manual
GWA 4NEB 430 0999-02c
8-27
3RW3 semiconductor motor control unit
1
1
1
1.5
1.5
1.5
1
1
1
1.9
1.7
1.7
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1.6
1.6
1.6
1
1
1
1
1
1
0.6
0.5
0.55
1
1
1
1
1
1
S0
S0
S0
S2
S2
S2
S3
S3
S3
Order number
3RW3.24-1AB..
3RW3.25-1AB..
3RW3.26-1AB..
3RW3034-1AB..
3RW3035-1AB..
3RW3036-1AB..
3RW3044-1AB..
3RW3045-1AB..
3RW3046-1AB..
1) = SIRIUS 3RW301 .. soft starters cannot be used with a fan.
0.85
0.8
0.75
1
1
1
3RT1044-1A.. 3RB1046-1EBO (25-100)A
3RT1045-1A.. 3RB1046-1EBO (25-100)A
3RT1046-1A.. 3RB1046-1EBO (25-100)A
S00
S00
63
75
100
1
1
1
2.2
1.8
1.8
1
1
1
1
1
1
0.4
0.35
0.35
1
1
1
1
1
1
0.65
0.85
0.85
1
1
1
(15-50)A
(15-50)A
(15-50)A
1
1
1
1.8
1.8
1.8
1
1
1
1
1
1
0.5
0.5
0.45
1
1
1
1
1
1
0.85
0.85
0.75
1
1
1
(6-25)A
(6-25)A
(6-25)A
—
1
1
?
?
1
1
1
1
Frame size
3RW3014-1CB..
3RW3016-1CB..
Device rated current in A
at an ambient temperature of 40 °C
3RT1034-1A.. 3RB1036-1UBO
3RT1035-1A.. 3RB1036-1UBO
3RT1036-1A.. 3RB1036-1UBO
Contactor order number
32
38
45
Order number
of electronic overload relay
12.5 3RT1024-1A.. 3RB1026-1QBO
16 3RT1025-1A.. 3RB1026-1QBO
25 3RT1026-1A.. 3RB1026-1QBO
Setting range of the overload relay
1.7
1.7
1.7
— 1)
—
—
1)
Correction factor
Rated current for the device
0.95
0.95
Correction factor for switching frequency
1
1
Correction factor
Set value of the el. overload relay
(3-12)A
(3-12)A
Correction factor
Rated current for the device
3RB1016-1SBO
3RB1016-1SBO
Correction factor for switching frequency
3RT1015-1A..
3RT1016-1A..
Correction factor
Set value of the el. overload relay
—
— 1)
Correction factor
Rated current for the device
1)
—
— 1)
1)
1)
— 1)
Correction factor for switching frequency
— 1)
Correction factor
Current setting of the circuit breaker
1)
Correction factor
Rated current for the device
— 1)
Correction factor for switching frequency
6
9
Without fan
Stand-alone installation
Correction factor
Set value of the el. overload relay
— 1)
Combining a 3RT1 contactor with an attached 3RB10 electronic overload
relay, a connecting lead, and a 3RW30/31 soft starter
Without fan
With fan
With fan
Installed side by side Stand-alone installation Installed side by side
Correction factors: 3RT
+ 3RB10 + 3RW3
Table 8-13: Correction factors, 3RT contactor + 3RB10 electronic overload relay + 3RW soft starter
SIRIUS System Manual
8-28
GWA 4NEB 430 0999-02c
3RW3 semiconductor motor control unit
8.3.4 Circuit example
Circuit example with 3RW30 frame size S0, S2, S3 (variant with
UC110-230 V):
L
N
L1
L2
L3
A2
A1
110...230V UC
End of startup
IN1
T1
T2 T3
13
14/23
24
On
Off
L
13
G1
ON
14
STOP
1
IN A1
A2
N
Fig. 8-15: Circuit example, 3RW3
SIRIUS System Manual
GWA 4NEB 430 0999-02c
8-29
3RW3 semiconductor motor control unit
8.3.5 Commissioning
Every SIRIUS 3RW soft starter comes with the following warning, which it is
imperative to heed:
Caution
This device has been tested carefully at the factory and found to be in working order.
During transportation, however, it may have been subject to stresses over
which we have no control. The bypass relays in the main circuit may be in an
undefined state.
In the interests of complete safety, the following procedure should be used
at commissioning or after the replacement of the SIRIUS soft starter:
First, apply the supply voltage to A1/A2 in order to put the impulse series
relays in a defined switching state.
Then, switch on the main circuit (L1/L2/L3).
If you do not do this, the motor can be switched on inadvertently and cause
damage to people or parts of the system.
Settings
3RW31
3RW30
t R on
t R1
uS
uS
t R off
t R2
Fig. 8-16: Settings, 3RW3
Note
At commissioning, the settings of the potentiometers for the ramp time and
the starting voltage should remain unchanged. These set values must be
obtained in a trial.
SIRIUS System Manual
8-30
GWA 4NEB 430 0999-02c
3RW3 semiconductor motor control unit
Changing settings
The potentiometer settings are scanned before each switching operation
("ON" or "OFF").
If, for example, the setting of the potentiometer for starting time is changed
while the motor is running up, the change does not come into effect until
the next start.
Starting voltage
The starting voltage should be set to a value at which the motor starts rapidly.
Ramp time
The ramp time should be set such that the motor can run up within the time
defined in this way.
If the star time for star-delta starting is known, the ramp time can be set to
this value.
Coasting-down time
The potentiometer for the coasting-down time is for setting the duration of
the voltage ramp for coasting down. This parameter can be used to make
the motor run-down longer than it would be if the motor were merely to
coast to a stop.
The motor coasts to a stop on its own if this potentiometer is set to a value
of 0.
Switching frequency
To prevent thermal overloading of the devices, the maximum permissible
switching frequency must be adhered to and the correction factor tables
must be used (see the installation guidelines in Section 8.3.2).
Starting time
In order to obtain optimum operating conditions for the 3RW3 soft starter,
the setting for the starting time should be approx. 1 second longer than the
resultant motor run-up time, in order to ensure that the internal jumpering
contacts do not have to carry the starting current. This protects the internal
jumpering contacts and increases their service life. Longer starting times
increase the thermal load on the devices and the motor unnecessarily and
lead to a reduction in the permissible switching frequency.
SIRIUS System Manual
GWA 4NEB 430 0999-02c
8-31
3RW3 semiconductor motor control unit
Position of the terminals
3RW30
The following graphic illustrates the position of the terminals and the potentiometers for adjustment.
Frame size S00
Frame size S0 to S3
3RW301.
3RW302./303./304.
1 L1
1 L1
3 L2
5 L3
IN1
3 L2
5 L3
A1
A2
A1
1
3RW
5
5
10
10
0
20s
min
min
20s
0
5
5
max
10
max
0
20s
10
0
2 T1
4 T2
13 14/23 24
20s
6 T3
2 T1
A2
4 T2
6 T3
Fig. 8-17: Position of the terminals and the potentiometers for adjustment
3RW31
The 3RW31 soft starters are available in frame size S0. Outwardly, they differ from the 3RW30 in the labeling of the contacts and the terminals:
• There is no BYPASSED auxiliary contact. The free contact is used to
enable the necessary drive contact IN2 to switch between the ramp
times t R1 and tR2.
• The 3RW31 does not have a coasting-down ramp. The potentiometer with
which the coasting-down time is adjusted on the 3RW30 is used here to
set the second ramp time t R2.
• There is no ON auxiliary contact.
Line length of the control cable
To eliminate problems with the cable coupler capacitances, the control cable
should be shorter than 15 m. (This is based on devices with a rated control
supply voltage of UC 24 V to 50 m.)
To eliminate problems in control cables that are fed out of the cubicle, coupling links must be used.
8.3.6 Event messages and diagnostics
Event messages
READY LED
Continuous
Flashing
Ready for operation
while starting up or coasting
down
BYPASSED LED
Continuous
Bypassed
Table 8-14: 3RW30/31 event messages
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GWA 4NEB 430 0999-02c
3RW3 semiconductor motor control unit
Diagnostics
Malfunction
READY LED off
No reaction to control input IN
(READY LED on)
Start the motor
directly
(BYPASSED LED on)
Possible cause
Remedy
• Supply voltage too low
• Check and adapt the supply
voltage at A1, A2
• No supply voltage
• Check fuses/line contactor
• Phase loss
• Check fuses/line contactor
• Check voltages at L1 to L3
• Wrong cable connected to IN
• Connect to IN as shown in the graphic
of the terminals
• No load
• Connect the motor
• The line voltage is switched off
and on in continuous operation • Always switch the line contactor off and
without operation of the conon in conjunction with control input IN
trol input IN
Table 8-15: 3RW30/31 diagnostics
8.3.7 Timing diagram
Starting and coastingdown behavior
The following timing diagram shows the switchover times when the device
is switched on/off:
L1-L2-L3
A1-A2
IN
Bypass
T1-T2-T3
UN
US
Switchover delay approx. 30 ms
On-delay approx. 80 ms
ON
command
OFF
command
Switchover
Switchover delay
delay approx.
approx. 30
30 ms
ms
ON
command
Fig. 8-18: Starting and coasting-down behavior
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GWA 4NEB 430 0999-02c
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3RW3 semiconductor motor control unit
Supply interruption in
bypassed state
If the load voltage is switched off in the bypassed state while the auxiliary
supply continues to be applied at terminals A1/A2, the soft starter performs
a direct start of the motor after the load voltage is switched on again. To prevent this, the "on" command must be removed in the event of the loss of the
main voltage.
The following graphic illustrates what happens when the supply is interrupted in the bypassed state:
L1-L2-L3
A1-A2
IN
Bypass
T1-T2-T3
UN
Direct start
US
Control supply
voltage on
Startup completed
Bypass closes
Main voltage
on
Start command
Failure of the
main voltage
To avoid a direct start after the return of
the main voltage, the ON command must
be removed in the event of the failure
failure of the main voltage (Toff>= xx ms)
Main voltage
returns
Fig. 8-19: Supply interruption in the bypassed state
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GWA 4NEB 430 0999-02c
3RW3 semiconductor motor control unit
8.4 Accessories
The following accessories are available for the 3RW3 soft starters:
Description
Order number
Fan for 3RW3.2..
3RW3926-8A
Fan for 3RW303..
and 3RW304..
3RW3936-8A
Terminal covers for box covers for
3RW303..
3RT1936-4EA2
Terminal covers for box covers for
3RW304..
3RT1946-4EA2
Terminal cover for bar connection for
3RW304..
3RT1946-4EA1
Link modules for combination with 3RV1
circuit breaker
3RA19.1-1A (frame sizes S00 to S3)
RC element for control from PLC
3TX7462-3T
Table 8-16: Accessories, 3RW30/31
Control of the fan
The fan is controlled by the control electronics of the soft starter.
It runs at the following times:
• When the fan is switched on: approx. 0.5 seconds after the bypass contacts close (end-of-startup signal)
• When the fan is switched off: approx. 0.5 hours after the soft starter is
switched off
Attachment of the fan
The fan is snapped into the recess provided on the underside of the soft
starter, and the plug-in cable is inserted in the corresponding connector. The
direction of installation is indicated on the fan by an arrow.
Additional parameter assignment is not necessary.
These fan modules mean that the starter can be installed in any position.
The only exception to this is when the fan cannot blow against the convection downward from above.
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3RW3 semiconductor motor control unit
Attachment of the fan
1
2
Fig. 8-20: Accessories: attachment of the fan
Terminal covers
To provide additional finger protection, for frame sizes S2 and S3 the terminal covers of the 3RT1 contactors of the same frame sizes can be used.
Installation on the soft starter is analogous to that on the contactors.
Link modules
The same link modules are available for building fuseless feeders (soft
starter + 3RV circuit breaker) as are used for the 3RT contactor + 3RV circuit
breaker combinations.
Refer to the information and assignment tables in Section 8.3.2, "Installation
guidelines".
RC element
If the 3RW30/31 soft starter is to be controlled from a PLC with a Triac or
thyristor output, malfunctioning can be avoided with an RC element. If there
is leakage current of more than 1 mA, without an RC element the soft
starter may interpret the drop in voltage that occurs at the input as an "ON"
command.
Connection example for
an RC element
Auxiliary supply
PLC control contact
RC element
A2
A1
IN1
3RW30/31...
Fig. 8-21: Connection example with an RC element
SIRIUS System Manual
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GWA 4NEB 430 0999-02c
3RW3 semiconductor motor control unit
8.5 Mounting and connection
8.5.1 Mounting
Snap-on attachment
The 3RW30 soft starters are snapped onto 35 mm rails in acc. with
DIN EN 50 022 without a tool.
The starter is placed on the upper edge of the rail and pressed downward
until it snaps onto the lower edge of the rail.
Frame sizes S00 and S0 can be removed just as easily: The starters are
pressed downward so that the tension of the attachment springs is loosened, and the starters can be removed.
In the case of frame sizes S2 and S3, these attachment springs are released
by a lug on the underside of the starter that can be moved using a screwdriver.
8.5.2 Connection
Screw-type terminals
The 3RW3 electronic soft starters are available with the SIGUT‚ terminal system and plus-minus POZIDRIV 2 screws.
Conductor cross-sections
The following table shows the permissible conductor cross-sections for the
3RW30 electronic soft starters:
3RW301.
L1 L2 L3
A1/A2; NO/NC
3RW302.
3RW312.
L1 L2 L3
0.8 to 1.2 Nm
7 to 10.3 lb.in
2 to 2.5 Nm
18 to 22 lb.in
10
2 x (0.5 to 1.5 mm²)
2 x (0.75 to 2.5 mm²)
2 x (1 to 2.5 mm²)
2 x (2.5 to 6 mm²)
13
2 x (0.75 to 16 mm²)
17
2 x (2.5 to 16 mm²)
10
2 x (0.5 to 2.5 mm²)
2 x (1 to 2.5 mm²)
2 x (2.5 to 6 mm²)
13
2 x (0.75 to 16 mm²)
1 x (0.75 to 25 mm²)
17
2 x (2.5 to 35 mm²)
1 x (2.5 to 50 mm²)
—
—
—
13
AWG
2 x (18 to 14)
2 x (14 to 10)
∅ 5 ... 6 mm / PZ2
3RW303.
L1 L2 L3
∅ 5 ... 6 mm /
PZ2
AWG
3 to 4.5 Nm
27 to 40 lb.in
2 x (0.75 to 25 mm²)
1 x (0.75 to 35 mm²)
2 x (18 to 3)
1 x (18 to 2)
3RW304..
L1 L2 L3
min
22
4 to 6 Nm
35 to 53 lb.in
4
17
AWG
2 x (10 to 50 mm²)
1 x (10 to 70 mm²)
2 x (10 to 1/0)
1 x (10 to 2/0)
Table 8-17: Conductor cross-sections, 3RW30/31
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3RW3 semiconductor motor control unit
8.5.3 Circuit diagrams
There are two ways to connect up the 3RW3 soft starter:
• Control by button and locking of the ON button via the "ON" auxiliary contact of the 3RW3
• Control by switch
L1 (L+)
N (L-) L1 (L+) ON/OFF
K1
OFF
A2
A1
IN1
1
A1
K1
ON
K1
A2
N (L-)
Fig. 8-22: Circuit diagrams, 3RW3
L3RW30
3RW302.
3RW303./3RW304
N (L-) L1 (L+)
F1
OFF
3RT
K1
A2
A1
3RV
1
3RU/3RB10
I>
3RW30
3RW30
13
14/23
24
ON
M
3~
M
3~
Fig. 8-23: Circuit diagrams, 3RW30
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GWA 4NEB 430 0999-02c
3RW3 semiconductor motor control unit
3RW31
N (L-) L1 (L+)
N (L-) L1 (L+)
ON/OFF
Ramp 1
A2
1
A1
K1
ON/OFF
Ramp 2
K2
A2
A1
1
2
2
OFF
F1
F2
3RW31
F3
ON
Ramp 1
K1
ON
Ramp 2
K2
K1
3RT
K1
K2
3RU/3RB10
F2
F3
3RT
K2
K1
3RU/3RB10
K2
M
3~
. /.P
Fig. 8-24: Circuit diagrams, 3RW31
Automatic operation
Direct starting of the soft starter is possible as long as the auxiliary supply is
applied at terminals A1 and A2. To this end, a jumper is required between
the auxiliary supply contact A1 and the control contact IN.
The following must be taken into consideration:
• An on delay of up to 4 seconds can occur, depending on the frame size.
• Soft coasting down is no longer possible after the auxiliary supply is
switched off.
Control via PLC
The 3RW3 soft starter can be controlled by means of a programmable controller (PLC). It is connected up in the same way as for control via switch.
Important
Always ensure that A1 and A2 are connected up correctly. Although polarity
reversal cannot damage the device, it can lead to malfunctioning.
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GWA 4NEB 430 0999-02c
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3RW3 semiconductor motor control unit
Control of a motor with
an electromechanical
brake
An electromechanical brake with infeed from the main voltage (L1/L2/L3)
should not be connected directly to the output of the soft starter. An electromechanical brake should be controlled by means of a separate contactor (K1
in the circuit diagram below):
L1
L2
Ue
L3
Q1
I>> I>> I>>
L+
L-
Us
F
STOP
K1
L1 L2 L3
G1
A2
A1
T1 T2 T3
IN
BYPASSED
ON
3RW30
ON
13
14
23
24
A1
K1
BR BR2
U
V
W
M
3k
K1
A2
Fig. 8-25: Motor control with an electromechanical brake
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GWA 4NEB 430 0999-02c
3RW3 semiconductor motor control unit
8.6 Dimensioned drawings (dimensions in mm)
g
k
i
5
j
5
f
a
m
d
e
l
h
b
n
c
mm
3RW301.
3RW302./3RW312.
3RW303.
3RW304.
a
97.5
125
160
170
b
45
45
55
70
c
93
119
143
183
d
95
125
141
162
e
66
81
95
108
f
51
63
63
87
g
—
96
115
156
h
7.5
7
8
8
i
76
101
119
132
j
—
63
77
87
k
86
14
18
22.5
l
—
7
7
7
m
90
115
150
160
n
35
35
30
60
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3RW3 semiconductor motor control unit
8.7 Technical specifications
8.7.1 Control electronics/power electronics
Control electronics
Type
3RW3. ..-1.B0.
Rated control supply voltage
V
Rated control supply current
Rated frequency at AC
3RW3. ..-1.B1.
UC 24
UC 110 to 230
mA
Approx. 50
Approx. 25 to
20
Hz
50/60 ± 10 %
Power electronics
Type
Voltage operating range
Rated frequency
Permissible site altitude
Installation position
3RW3. ..-1.B.4
3RW3. ..-1.B.5
3RW30 ..1AA12
V
200 AC to 460 AC, three-phase
(± 10 %)
460 AC to 575 AC, three phase
(± 10 % - 15 %)
115 AC to
240 AC, singlephase
(±10 %)
Hz
50/60 ± 10 %
Reduction of IE
Up to 1000 m above sea level
Up to 2000 m above sea level
Up to 3000 m above sea level
Up to 4000 m ab. sea level1)
100 %
92 %
85 %
78 %
Without additional fan
With additional fan 3)
The soft starters are designed for operation when mounted in a vertical position.
Any installation position (except vertical rotated by 180 °)
Type
3RW30 1.
3RW3. 2.
3RW30 3.
3RW30 4.
Frame size
S00
S0
S2
S3
Continuous operation (% of Ie)
%
100
Minimum load2) (% of Ie); At 40 °C
%
Permissible ambient temperature
°C
–25 to +60 (derating as of 40 °C, see below)
A
A
A
4)
4
)
4
3
0.1
1
3
0.1
1
3
0.1
1
3RW30 14
3RW30 16
3RW30 24
3RW30 25
3RW30 26
A
6/5/4
9/8/7
12.5/11/9
16/14/12
25/21/18
25/21/18
Switching capacity of the auxiliary
contacts
230 V/AC-15
230 V/DC-13
24 V/DC-13
Type
4
)
Current-carrying capacity
Rated operational current Ie
in acc. with IEC
At 40/50/60 °C, AC-53b
Rated operational current Ie
in acc. with UL/CSA
At 40/50/60 °C, AC-53b
A
4.8/4.8/4
7.8/7.8/7
11/11/9
17.5/14/12
Power loss at continuous rated operational current (40 °C) approx.
W
5
7
7
9
13
Power loss when the max. switching frequency is exploited
W
5
6
7
8
9
40
Permissible starts per hour without the use of a fan
Given intermittent duty S4, Tu = 40 °C
1/h
60
Duty cycle = 30%; stand-alone installation
%
250 x Ie, 2 s
300 x Ie, 2 s
30
1/h
—3)
54
12
Permissible starts per hour with the use of a fan
Given intermittent duty S4, Tu = 40 °C
21
Duty cycle = 30%; stand-alone installation
Idle time after continuous operation
s
0
200
With Ie before a new start
Degree of protection
In acc. with IEC 60 529
IP20 (terminal housing IP00)
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GWA 4NEB 430 0999-02c
3RW3 semiconductor motor control unit
Conductor cross-sections
Screw-type terminals
Auxiliary conductors:
(1 or 2 conductors connectable)
Single-core
mm2 2 x (0.5 to 1.5); 2 x (0.75 to 2.5) in acc. with IEC 60 947; max. 2 x (0.75 to 4)
for standard screwdrivers
Finely stranded with wire end
ferrule
mm2 2 x (0.5 to 1.5); 2 x (0.75 to 2.5)
AWG cables,
single- or multi-core
AWG 2 x (18 to 14)
- Terminal screws
Nm
lb.in
size 2 and Pozidriv 2
M 3, PZ2
- Tightening torque
0.8 to 1.0
7.1 to 8.9
0.8 to 1.0
7.1 to 8.9
Main conductors:
Single-core
mm2 2 x (0.5 to 1.5);
2 x (0.75 to 2.5)
2 x (1 to 2.5)
2 x (2.5 to 6)
Finely stranded with wire end
ferrule
mm2 2 x (0.5 to 2.5)
2 x (1 to 2.5)
2 x (2.5 to 6)
Multi-core
mm2
Type
—
—
3RW30 14
AWG cables,
single- or multi-core
3RW30 16
3RW30 24
AWG 2 x (18 to 14)
- Terminal screws
- Tightening torque
Nm
lb.in
3RW30 25
3RW30 26
2 x (14 to 10)
M 3, PZ2
M 4, PZ2
0.8 to 1.2
7 to 10.3
2 to 2.2
18 to 22
1)Over 4000 m on request
2)The rated current for the motor (specified on the motor's type plate) should amount at least to the specified percentage of the SIRIUS soft
starter's device rated current Ie.
3)In the case of frame size S00, it is not possible to install the fan provided as an accessory.
4)Frame size S00 does not have any auxiliary contacts.
Power electronics
Type
3RW30 34
3RW30 35
3RW30 36
3RW30 44
3RW30 45
3RW30 46
100/85/72
Current-carrying capacity
Rated operational current Ie
in acc. with IEC
At 40/50/60 °C, AC-53b
A
32/27/23
38/32/27
45/38/32
63/54/46
75/64/54
Rated operational current Ie
in acc. with UL/CSA
At 40/50/60 °C, AC-53b
A
27/27/23
34/32/27
42/38/32
62/54/46
68/64/54
10
13
17
13
16
26
15
5
20
30
15
48
24
Power loss at continuous rated operational current (40 °C) approx. W
99/85/72
Permissible starts per hour
Given interm. duty S4, Tu = 40 °C
1/h
20
Duty cycle = 30 %
%
300 x Ie, 3 s
1/h
44
s
0
300 x Ie, 4s
Permissible starts per hour with the use of a fan
Given interm. duty S4, Tu = 40 °C
27
9
32
400
0
Duty cycle = 30 %; stand-alone installation
Idle time after cont. operation
with Ie before a new start
Degree of protection
In acc. with IEC 60 529
IP20 (terminal housing IP00)
IP201)
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3RW3 semiconductor motor control unit
Conductor cross-sections
Screw-type terminals
Auxiliary conductors:
(1 or 2 conductors connectable)
Single-core
mm2
2 x (0.5 to 1.5); 2 x (0.75 to 2.5) in acc. with IEC 60 947; max. 2 x (0.75 to 4)
for standard screwdrivers
Finely stranded with wire
end ferrule
mm2
2 x (0.5 to 1.5); 2 x (0.75 to 2.5)
size 2 and Pozidriv 2
AWG cables,
single- or multi-core
AWG
- Terminal screws
- Tightening torque
2 x (18 to 14)
M3
Nm
lb.in
0.8 to 1.0
7.1 to 8.9
Single-core
mm2
2 x (0.75 to 16)
Finely stranded with wire
end ferrule
mm2
2 x (0.75 to 16)
1 x (0.75 to 25)
Multi-core
mm2
2 x (0.75 to 25)
1 x (0.75 to 35)
2 x (10 to 50)
1 x (10 to 70)
AWG cables,
single- or multi-core
AWG
2 x (18 to 3)
1 x (18 to 2)
2 x (10 to 1/0)
1 x (10 to 2/0)
M 6, box terminal, PZ2
M6 (Allan screw)
3 to 4.5
27 to 40
4 to 6
35 to 53
Main conductors:
- Terminal screws
- Tightening torque
Nm
lb.in
General specifications
Standard
Parameters
EMC noise immunity
Electrostatic discharge (ESD)
IEC 1000-4-2,
Severity 3: 6/8 kV
El. magn. RF fields
IEC 1000-4-3
Frequency range: 80 to 1000 MHz with 80 % at 1 kHz
Severity 3, 10 V/m
Conducted RF disturbance
IEC 61000-4-6
EN 60 947-4-2
SN-IACS
Frequency range: 80 MHz to 1000 MHz with 80 %
at 1 kHz
10 V at 0.15 MHz to 80 MHz
3 V at 10 kHz to 80 MHz
Burst
IEC 1000-4-4
Severity 3: 1/2 kV
Surge
IEC 1000-4-5
Severity 3: 1/2 kV
EMC emitted interference
EMC radio interference intensity
CISPR 11/09.1990
Limit value of class B at 30 MHz to 1000 MHz
Radio interference voltage
CISPR 11/09.1990
EN 60 947-4-2
(0.15 MHz to 30 MHz): device class A (industry)
1
) IP20 only with attached box terminal (delivery state). Without box terminal IP00.
2
) Device class B (public power supply networks) is complied with only in the case of variants 3RW3.-1AB0. with control supply voltage UC
of 24 V. For the 3RW3.-1A.1. variants with a control supply voltage UC of 110 V to 230 V, single-stage filters (e.g. type B84143-A...) must be
connected upstream.
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GWA 4NEB 430 0999-02c
3RW3 semiconductor motor control unit
8.7.2 Short-circuit protection and fuse coordination
IEC 60947-4-1/DIN VDE 0660 Part 102 draws a distinction between two
coordination types, known as coordination type 1 and coordination type 2. In
both coordination types, the short circuit to be dealt with is reliably disconnected. The differences lie only in the degree to which the device is damaged after a short circuit.
Coordination type 1
The motor feeder can be operable after each short-circuit disconnection.
Damage to the soft starter is possible. The circuit breaker itself always
attains coordination type 1.
Coordination type 2
After a short-circuit event there must be no damage to the soft starter or
any other switching device; only the backup fuse may be destroyed. The
actual motor feeder can be put into operation again immediately once the
short circuit fuse has been replaced.
Maximum short-circuit
current
All the specified fuse configurations are designed for a maximum short-circuit current of 50 kA. This ensures that short circuits of 50 kA can be disconnected without posing a threat to persons or the system.
Motor feeder:
coordination type 1
Note on configuration
A fuseless configuration is recommended for motor feeders (i.e. the combination of a 3RV circuit breakers and a 3RW30 soft starter). Coordination type
1 is thus attained.
Motor feeder:
coordination type 2
To set up a motor feeder of coordination type 2, the feeder must be fused
(i.e. the motor must be provided with overload protection).
The following can be used:
• The 3NE1 all-range fuse, which unifies line protection and semiconductor
protection
• The 3NE8 semiconductor protection fuse, in which case additional protection must be provided for the line
Comparison of coordination types 1 and 2
The configuration variant on the basis of coordination type 2 is associated
with higher costs than that of coordination type 1, which is why the fuseless
configuration (coordination type 1) is recommended. The advantages are:
• Fewer components in the cubicle
• Less effort required for wiring
• Less cubicle space required
• Lower price
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GWA 4NEB 430 0999-02c
8-45
3RW3 semiconductor motor control unit
Fuse configurations
with SITOR 3NE1..-0
The following table specifies the fuse configuration (coordination type 2) for
3RW30/31 with SITOR fuses 3NE1..-0 (short-circuit and line protection);
max. short-circuit current 50 kA:
Order number
Soft starter
Order number
of the fuse
Rated current
of the fuse
Frame size of
the fuse
MLFB
MLFB
A
3RW30 14
3NE1814-01)
20
000
3RW30 16
1)
3NE1815-0
25
000
3RW30 24/3RW31 24
3NE1815-02)
25
000
3RW30 25/3RW31 25
3NE1815-0
2)
25
000
3RW30 26/3RW31 26
3NE1802-02)
40
000
3RW30 34
3NE1818-02)
63
000
3RW30 35
3NE1820-02)
80
000
3RW30 36
3NE1820-0
2)
80
000
3RW30 44
3NE1820-02)
80
000
3RW30 45
3NE1021-02)
100
00
3RW30 46
— 3)
—
—
Table 8-18: Fuse configurations (SITOR)
1)Fuse coordination for max. 400 V
2)Fuse coordination for max. 500 V
3)Fuse coordination with all-range fuses not possible;
pure semiconductor protection fuses plus circuit breakers
can be used instead (see following table)
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GWA 4NEB 430 0999-02c
3RW3 semiconductor motor control unit
Fuse configurations
with SITOR 3NE8
The following table specifies the fuse configuration (coordination type 2) for
3RW30/31 with SITOR fuses 3NE8 (semiconductor protection is provided by
the fuse; line protection and overload protection are provided by the circuit
breaker); max. short-circuit current 50 kA/400 V:
Order
Rated cur- Frame
number
Link module
rent of the size of
of the circuit 3RW - 3RV
fuse
the fuse
breaker 2)
Order number
Soft starter
Order
number
of the fuse
MLFB
MLFB
A
Size
MLFB
MLFB3)
3RW30 14
3NE80 03
35
00
3RV10 11
3RA19 11-1A
3RW30 16
3NE80 03
35
00
3RV10 11
3RA19 11-1A
3RW30 24/
3RW31 24
3NE80 03
35
00
3RV10 21
3RA19 21-1A
3RW30 25/
3RW31 25
3NE80 03
35
00
3RV10 21
3RA19 21-1A
3RW30 26/
3RW31 26
—1)
—
—
—
—
3RW30 34
3NE80 22
125
00
3RV10 31
3RA19 31-1A
3RW30 35
3NE80 24
160
00
3RV10 31
3RA19 31-1A
3RW30 36
3NE80 24
160
00
3RV10 31
3RA19 31-1A
3RW30 44
3NE80 24
160
00
3RV10 41
3RA19 41-1A
3RW30 45
3NE80 24
160
00
3RV10 41
3RA19 41-1A
3RW30 46
3NE80 24
160
00
3RV10 41
3RA19 41-1A
Table 8-19: Fuse configurations (SITOR)
1) Coordination with pure semiconductor protection fuses is not possible;
all-range fuses 3NE1..-0 can be used (see the table above)
2) The selection and setting of the circuit breaker is based on the rated current for the motor
3) Note the unit of quantity
If the motor is to be configured to meet UL requirements, the order number
of the fuse must be specified (3NE80..-1).
SIRIUS System Manual
GWA 4NEB 430 0999-02c
8-47
3RW3 semiconductor motor control unit
Fuseless configuration
The following table specifies the components of the fuseless configuration
(coordination type 1) for 3RW30/31; short-circuit current of 50 kA/400 V:
Order number
of the soft starter
Order number
of the circuit
breaker1)
Link module
MLFB
MLFB
MLFB3)
3RW30 14
3RV10 112)
3RA19 11-1A
3RW30 16
3RV10 112)
3RA19 11-1A
3RW30 24/
3RW31 24
3RV10 21
3RA19 21-1A
3RW30 25/
3RW31 25
3RV10 21
3RA19 21-1A
3RW30 26/
3RW31 26
3RV10 21
3RA19 21-1A
3RW30 34
3RV10 31
3RA19 31-1A
3RW30 35
3RV10 31
3RA19 31-1A
3RW30 36
3RV10 31
3RA19 31-1A
3RW30 44
3RV10 41
3RA19 41-1A
3RW30 45
3RV10 41
3RA19 41-1A
3RW30 46
3RV10 41
3RA19 41-1A
Table 8-20: Motor feeder: fuseless configuration
1) The selection and setting of the circuit breaker is based on the rated current for the motor
2) 50 mm clearance is required above and below between the 3RW and
grounded parts
3) Note the unit of quantity
SIRIUS System Manual
8-48
GWA 4NEB 430 0999-02c
3RW3 semiconductor motor control unit
Fused configuration
The following table specifies the components of the fused configuration
(coordination type 1) for 3RW30/31; short-circuit current of 50 kA/400 V:
Order number
of the soft
starter
Order
number
of the fuse
Fuse rated
current/
frame size
Order
Order number
number
of the therm.
of the elecoverload
tron. over1)
relay
load relay1)
Order
number
of the
contactor
MLFB
MLFB
A / size
MLFB
MLFB
MLFB
3RW30 14
3NA38 10
25 / 00
3RU11 162)4)
3RB10 162)4)
3RT10 15
3RW30 16
3NA38 10
25 / 00
3RU11 162)4)
3RB10 162)4)
3RT10 16
3RW30 24/
3RW31 24
3NA38 22
63 / 00
3RU11 263)
3RB10 263)
3RT10 24
3RW30 25/
3RW31 25
3NA38 22
63 / 00
3RU11 263)
3RB10 263)
3RT10 25
3RW30 26/
3RW31 26
3NA38 24
80 / 00
3RU11 263)
3RB10 263)
3RT10 26
3RW30 34
3NA38 30
100 / 00
3RU11 363)
3RT10 34
3)
3RT10 35
3RW30 35
3NA38 30
100 / 00
3RU11 36
3RW30 36
3NA38 30
100 / 00
3RU11 363)
3RT10 36
463)
3RT10 44
3RW30 44
3NA31 44
250 / 1
3RU11
3RW30 45
3NA31 44
250 / 1
3RU11 463)
3RT10 45
250 / 1
463)
3RT10 46
3RW30 46
3NA31 44
3RU11
Table 8-21: Motor feeder: fused configuration
1) The selection and setting of the overload relay is based on the rated current for the motor
2) Short-circuit current of 50 kA to max. 400 V
3) Short-circuit current of 50 kA to max. 500 V
4) 50 mm clearance is required above and below between the 3RW and
grounded parts
SIRIUS System Manual
GWA 4NEB 430 0999-02c
8-49
3RW3 semiconductor motor control unit
8.7.3 Site altitude
If the site altitude is above 1000 m, the following are necessary:
• A reduction in the rated current for thermal reasons
• A reduction in the rated voltage on account of the diminished dielectric
strength
Reductions as a function of site altitude
The diagram below plots the reductions in rated current and rated operating
voltage as a function of site altitude:
105
100
95
90
85
80
75
70
Ue reduction
Ie reduction
0
500
1000
1500
2000
2500
3000
3500
4000
Site altitude in m
Fig. 8-26: Reductions as a function of site altitude
SIRIUS System Manual
8-50
GWA 4NEB 430 0999-02c
3RW3 semiconductor motor control unit
8.7.4 Specifications in acc. with IEC
The specified motor ratings are guide values.
The soft starter must be selected on the basis of the rated current Ie.
The motor ratings are based on the values specified in DIN 42 973 (kW) and NEC 96 / UL 508 (hp).
Ambient temperature = 40 °C
230 V
400 V
Ie
Order number
500 V
Ie
Order number
Pe in kW
Pe in kW
In A
MLFB
Pe in kW
In A
MLFB
1.5
3
6
3RW30 14-1CB.4
—
—
—
2.2
4
9
3RW30 16-1CB.4
—
—
—
3
5.5
12.5
3RW30 24-1AB.4
7.5
12.5
3RW30 24-1AB.5
4
7.5
16
3RW30 25-1AB.4
7.5
16
3RW30 25-1AB.5
5.5
11
25
3RW30 26-1AB.4
15
25
3RW30 26-1AB.5
7.5
15
32
3RW30 34-1AB.4
18.5
32
3RW30 34-1AB.5
11
18.5
38
3RW30 35-1AB.4
22
38
3RW30 35-1AB.5
11
22
45
3RW30 36-1AB.4
30
45
3RW30 36-1AB.5
19
30
63
3RW30 44-1AB.4
37
63
3RW30 44-1AB.5
22
37
75
3RW30 45-1AB.4
45
75
3RW30 45-1AB.5
30
55
100
3RW30 46-1AB.4
70
100
3RW30 46-1AB.5
Table 8-22: 3RW3 motor ratings in acc. with IEC at 40 °C
Ambient temperature = 50 °C
230 V
400V
Ie
Order number
500 V
Ie
Order number
Pe in kW
Pe in kW
In A
MLFB
Pe in kW
In A
MLFB
1.1
2.2
5
3RW30 14-1CB.4
—
—
—
1.5
4
8
3RW30 16-1CB.4
—
—
—
3
5.5
11
3RW30 24-1AB.4
5.5
11
3RW30 24-1AB.5
4
5-5
14
3RW30 25-1AB.4
7.5
14
3RW30 25-1AB.5
5.5
11
21
3RW30 26-1AB.4
11
21
3RW30 26-1AB.5
7.5
11
27
3RW30 34-1AB.4
15
27
3RW30 34-1AB.5
7.5
15
32
3RW30 35-1AB.4
18.5
32
3RW30 35-1AB.5
11
18.5
38
3RW30 36-1AB.4
22
38
3RW30 36-1AB.5
15
22
54
3RW30 44-1AB.4
30
54
3RW30 44-1AB.5
18.5
30
64
3RW30 45-1AB.4
37
64
3RW30 45-1AB.5
22
45
85
3RW30 46-1AB-4
55
85
3RW30 46-1AB.5
Table 8-23: 3RW3 motor ratings in acc. with IEC at 50 °C
Ambient temperature = 60 °C
230 V
400 V
Ie
Order number
500 V
Ie
Order number
Pe in kW
Pe in kW
In A
MLFB
Pe in kW
In A
MLFB
0.75
1.5
4
3RW30 14-1CB.4
—
—
—
1.5
3
7
3RW30 16-1CB.4
—
—
—
2.2
4
9
3RW30 24-1AB.4
5.5
9
3RW30 24-1AB.5
3
5.5
12
3RW30 25-1AB.4
7.5
12
3RW30 25-1AB.5
4
7.5
18
3RW30 26-1AB.4
11
18
3RW30 26-1AB.5
5.5
11
23
3RW30 34-1AB.4
15
23
3RW30 34-1AB.5
7.5
11
27
3RW30 35-1AB.4
15
27
3RW30 35-1AB.5
7.5
15
32
3RW30 36-1AB.4
18.45
32
3RW30 36-1AB.5
11
22
46
3RW30 44-1AB.4
30
46
3RW30 44-1AB.5
15
22
54
3RW30 45-1AB.4
30
54
3RW30 45-1AB.5
18.5
37
72
3RW30 46-1AB.4
45
72
3RW30 46-1AB.5
Table 8-24: 3RW3 motor ratings in acc. with IEC at 60 °C
SIRIUS System Manual
GWA 4NEB 430 0999-02c
8-51
3RW3 semiconductor motor control unit
8.7.5 Specifications in acc. with NEMA
The specified motor ratings are guide values.
The soft starter must be selected on the basis of the rated current Ie.
The motor ratings are based on the values specified in DIN 42 973 (kW) and NEC 96 / UL 508 (hp).
Ambient temperature = 40 °C
200V
230 V
460V
Ie
Order number
460V
575V
Ie
Order number
Pe in hp
Pe in hp
Pe in hp
In A
MLFB
Pe in hp
Pe in hp
In A
MLFB
1
1
3
4.8
3RW30 14-1CB.4
—
—
—
—
2
2
5
7.8
3RW30 16-1CB.4
—
—
—
—
3
3
7.5
11
3RW30 24-1AB.4
7.5
10
11
3RW30 24-1AB.5
5
5
10
17.5
3RW30 25-1AB.4
10
15
17.5
3RW30 25-1AB.5
7.5
7.5
15
25.3
3RW30 26-1AB.4
15
20
25.3
3RW30 26-1AB.5
7.5
7.5
20
27
3RW30 34-1AB.4
20
25
27
3RW30 34-1AB.5
10
10
25
34
3RW30 35-1AB.4
25
30
34
3RW30 35-1AB.5
10
15
30
42
3RW30 36-1AB.4
30
40
42
3RW30 36-1AB.5
20
20
40
62.1
3RW30 44-1AB.4
40
60
62.1
3RW30 44-1AB.5
20
25
50
68
3RW30 45-1AB.4
50
60
68
3RW30 45-1AB.5
30
30
75
99
3RW30 46-1AB.4
75
100
99
3RW30 46-1AB.5
Table 8-25: 3RW3 motor ratings in acc. with NEMA at 40 °C
Ambient temperature = 50 °C
200V
230 V
460V
Ie
Order number
460V
575V
Ie
Order number
Pe in hp
Pe in hp
Pe in hp
In A
MLFB
Pe in hp
Pe in hp
In A
MLFB
1
1
3
4.8
3RW30 14-1CB.4
—
—
—
—
2
2
5
7.8
3RW30 16-1CB.4
—
—
—
—
3
3
7.5
11
3RW30 24-1AB.4
7.5
10
11
3RW30 24-1AB.5
3
3
10
14
3RW30 25-1AB.4
10
10
14
3RW30 25-1AB.5
5
5
15
21
3RW30 26-1AB.4
15
15
21
3RW30 26-1AB.5
7.5
7.5
20
27
3RW30 34-1AB.4
20
25
27
3RW30 34-1AB.5
7.5
10
20
32
3RW30 35-1AB.4
20
30
32
3RW30 35-1AB.5
10
10
25
38
3RW30 36-1AB.4
25
30
38
3RW30 36-1AB.5
15
20
40
54
3RW30 44-1AB.4
40
50
54
3RW30 44-1AB.5
20
20
40
64
3RW30 45-1AB.4
40
60
64
3RW30 45-1AB.5
25
30
60
85
3RW30 46-1AB.4
60
75
85
3RW30 46-1AB.5
Table 8-26: 3RW3 motor ratings in acc. with NEMA at 50 °C
Ambient temperature = 60 °C
200 V
230 V
460 V
Ie
Order number
460 V
575 V
Ie
Order number
Pe in hp
Pe in hp
Pe in hp
In A
MLFB
Pe in hp
Pe in hp
In A
MLFB
0.75
0.75
2
4
3RW30 14-1CB.4
—
—
—
—
1.5
1.5
3
7
3RW30 16-1CB.4
—
—
—
—
2
2
5
9
3RW30 24-1AB.4
5
7.5
9
3RW30 24-1AB.5
3
3
7.5
12
3RW30 25-1AB-4
7.5
10
12
3RW30 25-1AB.5
5
5
10
18
3RW30 26-1AB.4
10
15
18
3RW30 26-1AB.5
5
7.5
15
23
3RW30 34-1AB.4
15
20
23
3RW30 34-1AB.5
7.5
7.5
20
27
3RW30 35-1AB.4
20
25
27
3RW30 35-1AB.5
7.5
10
20
32
3RW30 36-1AB.4
20
30
32
3RW30 36-1AB.5
10
15
30
46
3RW30 44-1AB.4
30
40
46
3RW30 44-1AB.5
15
20
40
54
3RW30 45-1AB.4
40
50
54
3RW30 45-1AB.5
20
25
50
72
3RW30 46-1AB.4
50
60
72
3RW30 46-1AB.5
Table 8-27: 3RW3 motor ratings in acc. with NEMA at 60 °C
SIRIUS System Manual
8-52
GWA 4NEB 430 0999-02c
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