ETAL ESS30-S Low energy breaker with 30 % reduction of power loss compared to competitive product Datasheet

Electronic circuit breaker ESS30-Sxxx-DC24V
Description
The electronic circuit protector ESS30-S with physical isolation is
the globally unique electronic overcurrent protection for DC 24 V
applications as a “low energy breaker”. It meets the requirements to
DIN EN 60934 and UL 1077 as a Supplementary Protector in central
and decentralised energy supply units. The compact device can be
plugged into the terminal block systems 17plus and 18plus and is
also suitable for the SVS power distribution systems, ensuring quick
and easy installation.
DC 24 V switch-mode power supplies are widely used in automation
today. In the event of an overload, however, they turn down the output
voltage which is intended to power all connected loads. So if there is
a failure in a single load of the system, the supply voltage will break
down also in all other load circuits. Not only does this frequently cause
undefined fault conditions, but it can even lead to machine stoppages
or system downtimes.
In this context selectivity means that type ESS30-S responds faster
to any overload or short circuit conditions in a load circuit than the
switch-mode power supply. This is ensured by the combination of
active electronic current limitation and well-proven circuit breaker
technology including physical isolation.
The max. possible overcurrent is limited to typically 1.2 times rated
current (see table 1). This allows switching on capacitive loads of up
to 40,000 µF, but a disconnection will only be effected in the event of
an overload or short circuit. For adjustment to the load conditions the
current rating can be selected in fixed values from 0.5 A to 10A. Visual
status indication is by means of a multicoloured LED and by integral
signal outputs. The manual ON/OFF switch on the device itself allows
start-up of certain individual load circuits and reset after disconnection on grounds of overcurrent.
As soon as the ESX30-S detects an overload or short circuit in its load
circuit, it blocks the load output transistor and disconnects the current
flow in the faulty circuit. Physical isolation is activated. After remedy
of the failure, the load output of the ESS30-S is re-activated manually
by actuating the ON/OFF switch on the device.
Features and Benefits
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Low Energy Breaker with 30 % reduction of power loss
compared to competitive product
Ambient temperatures up to 60 °C
Selective load protection with physical isolation in the
event of a failure
Compact design, 30 % height reduction compared to
equivalents at a width of only 12.5 mm
One trip curve for all loads (DC 24 V motors upon request)
Active current limitation when switching on capacitive loads
up to 40,000 µF and in case of overload/short circuit
Fixed current ratings from 0.5 A to 10 A
Reliable overload disconnection typically from 1.2 x IN even with
long load lines or small cable cross sections
Manuel ON/OFF switch (push-push actuation)
Clear status indication by means of LED
Integral fail-safe element, adjusted to current rating
Width per channel only 12.5 mm
Can be plugged into side-by-side mounted power distribution
modules 17plus, 18plus and SVSxx
ESS30-S...
Technical data (Tamb = 25 °C, UB = DC 24 V)
Operating data
Operating voltage UB
DC 24 V (18...30 V)
Current ratings IN
fixed ratings:
0.5 A; 1 A; 2 A; 3 A; 3,6 A; 4 A;
6 A; 8 A; 10 A;
Standby current I0
in ON condition: typically 4 mA
Trip current (bimetal) typically 0.4 A (only under fault condition,
till physical isolation)
l multicoloured LED:
Visual status
indication
green:
- device is ON (S1 = ON)
load circuit connected
orange:
- overload or short circuit until
electronic disconnection
red:
-device switched OFF electronically
load circuit OFF
- undervoltage (UB < 14 V)
OFF:
- manually OFF (S1 = OFF)
load circuit physically isolated
or device is dead-voltage
4
l Potential-free signal contact
l On/off position of the switch S1
Load circuit
Load output power MOSFET switching output
(plus switching)
Overload and short typically 1.2 x IN
circuit disconnection with active current limitation
Trip times for see time/current characteristic
electronic disconnection overload trip time typically 500 ms
short circuit trip time depending on
current rating (see table 1)
for physical isolation typically 5 s (3 ... 9 s)
Temperature disconnectioninternal temperature monitoring with
physical isolation
Undervoltage with hysteresis, no reset required:
monitoring »OFF« at UB < 14 V
of load output »ON« at UB > 17 V
Switch-on delay tStart typically 2 ms after each ON operation,
reset and after applying of UB
Capacitive loads up to 40,000 µF
Free-wheeling diodeexternal free-wheeling diode
recommended for inductive load
Parallel connection of
several load outputs not allowed
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Electronic circuit breaker ESS30-Sxxx-DC24V
Technical data (Tamb = 25 °C, UB = DC 24 V)
Order numbering code
Error message:
Signal output F
potential-free signal contact switches
simultaneously with physical isolation,
max. DC 30 V / 2 A, min. DC 12 V / 10 mA
Signal output ESS30-S003 blue push button is in ON position:
Signal change over contactsignal contact 13-14 is closed
13-12 is open
blue push button is in OFF position:
signal contact 13-14 is open
13-12 is closed
Visual status indication
LED green
UB is applied and switch S1 is ON and no
overload, no short circuit
4
l device switched off (switch S1 is OFF)
OFF condition LED off
l load circuit physically isolated
l no operating voltage UB
LED orangeoverload conditions > 1.2 times rated
current until, electronic disconnection
LED redelectronic disconnection upon overload,
short circuit or undervoltage
General data
Fail-safe elementback-up fuse for ESS30-S.. not required
due to integral redundant fail-safe
element (protective element)
Blade terminals
6.3 mm to EN 60934-6.3-0.8
Housing material
moulded
Mountingpluggable into power distribution systems
for side-by-side mounting (module 17plus
or 18plus by E-T-A)
Ambient temperature0...+60 °C (without condensation, cf. EN
60204-1)
Storage temperature
-40...+70 °C
Humidity96 hours at 95 % RH, 40 °C
to IEC 60068-2-78,-Cab
climate class 3K3 to EN60721
Vibration
3 g test to IEC 60068-2-6, test Fc
Degree of protection
operating area IP30 EN 60529
installation area IP00 EN 60529
EMC requirements
noise emission: EN 61000-6-3
(EMC directive, CE logo) susceptibility: EN 61000-6-2
Insulation co-ordination 0.5 kV / pollution degree 2
(IEC 60934)
reinforced insulation in operating area
Dielectric strength
(see also dimensions)
operating area
test voltage AC 1000 V
installation area
test voltage AC 500 V
load circuit
auxiliary contact
test voltage AC 500 V
Insulation resistance
> 100 MΩ (DC 500 V) between
(OFF condition) LINE (+) and LOAD (+)
Dimensions (w x h x d)12.5 x 78.5 x 60 mm (tolerances to
DIN ISO 286 part 1 IT13)
Operating force
ON
5...8 N
OFF
7...10 N
Mass
approx. 39 g
2
Ttype
ESS30
Electronic circuit breaker with current limitation
Mounting
S
Version
0 with physical isolation in the event of a failure
Signal input
0 without signal input
Signal output:
3 d
ouble auxiliary change over contact
(min. 12 V/10 mA; max. 30 V/2 A)
Operating voltage
DC 24 V voltage rating DC 24 V
Current ratings
0.5 A
1A
2A
3A
3.6 A
4A
6A
8A
10 A
ESS30 - S
0
0 3 - DC 24 V - 6 A ordering example
Notes
lThe
user has to ensure that the cable cross section of the load
circuit in question complies with the current rating of the ESS30-S
used.
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In
addition special precautions must be taken in the system or
machine (e.g. use of a safety PLC) which reliably prevent an
automatic re-start of parts of the system (cf. Machinery Directive
2006/42/EG and EN 60204-1, Safety of Machinery). In the event
of a failure (short circuit/overload) the load circuit will be disconnected electronically with physical isolation of the contacts by the
ESS30-S.
Approvals of ESS30-S
Approval
authority
Standard
Rated voltage
Current ratings
VDE
EN 60934
DC 24 V
0.5 A…10 A
UL
UL 1077
DC 24 V
0.5 A…10 A
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Electronic circuit breaker ESS30-Sxxx-DC24V
Table 1: Voltage drop, current limitation, trip times, fail-safe element, max. load current
current rating
typical
active current
IN
voltage drop
limitation
UON at IN
typically
trip
time
IKS
typically
1)
trip
time
IOL
typically
fail-safe
element
max. load current at 100 % ON duty
2)
TAmb = 40 °C
TAmb = 50 °C
TAmb = 60 °C
0.5 A
90 mV
1.2 x rated
current
500 ms
500 ms
2A
0.5 A
0.5 A
0.5 A
1A
100 mV
1.2 x rated
current
500 ms
500 ms
2A
1A
1A
1A
2A
110 mV
1.2 x rated
current
500 ms
500 ms
4A
2A
2A
2A
3A
150 mV
1.2 x rated
current
500 ms
500 ms
6.3 A
3A
3A
3A
3.6 A
155 mV
1.2 x rated
current
350 ms
500 ms
6.3 A
3.6 A
3.6 A
3.6 A
4A
160 mV
1.2 x rated
current
280 ms
500 ms
6.3 A
4A
4A
4A
6A
170 mV
1.2 x rated
current
150 ms
500 ms
10 A
6A
6A
6A
8A
190 mV
1.2 x rated
current
280 ms
500 ms
15 A
8A
7.5 A
7A
10 A
210 mV
1.2 x rated
current
200 ms
500 ms
15 A
9.5 A
9A
8.5 A
Note:
When mounted side-by-side without convection the devices can only carry max. 80 % of their rated current continuously (100 %
ON duty) due to thermal effect.
1) short circuit
2) overload
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Connection diagram ESS30-S003-... (Example)
Dimensions ESS30-S
60
Example ESS30-S003
fail-safe
G
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N
Y
72,5 ON
78,5 OFF
2 Load +
12 SI
14 SO
11 GND
13 SC
6 x 6,8 = 40,8
50
blade terminals to
EN 60934-6,3x0,8
GND (-)
12,3
LOAD (+)
load output
A
6,8
reverse plug-in
protection
14
12 13
SO SI
SC
signal output
M
installation
area
1 Line +
activation
operating condition
green / orange / red
R
10,3
ON / OFF
E
Electronic Circuit Breaker
ESS30-S003-DC24V-0.5A
Made in Germany
operating
area
electronic control unit
Rsense
Short circuit/ current
overload
measurement
Line (+)
DC 24 V
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Electronic circuit breaker ESS30-Sxxx-DC24V
ESS30-S Signal output / (connection diagrams)
Connection diagram ESS30-S003-... (Example)
The auxiliary contacts are shown in
OFF or fault condition
mounting area
operating area
ESS30-S003
1 Line +
11 GND
R
M
A
N
Y
12 SI
SC 13
E
14 SO
GND 11
G
13 SC
LINE + 1
Electronic Circuit Breaker
ESS30-S003-DC24V-0.5A
Made in Germany
without signal input
with signal output f
single signal, change-over
2 Load +
SO 14
SI 12
2 LOAD +
operating condition
13-14 closed; 13-12 open
fault condition
13-12 open; 13-14 closed
Typical time/current characteristic (Tamb = 25 °C)
min. 1.05 x IN max. 1.35 x IN
10000
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1000
trip time in seconds
4
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The
electronic current limitation typically begins at
1.2 x IN. This means: under all overload conditions (independent
of power supply and load circuit resistance) typically 1.2 times
rated current is applied until disconnection. The corresponding
current limitation value ILimit depends on the current rating of
the device IN.
100
10
1
0,5
l
0,1
0,01
0
trip time depends
on rated current
(see table 1)
4
he overload trip time is typically 500 ms
T
(e.g. ESS30-S...-6A)
1
2
disconnection and
current limitation
typically 1.2 x IN
4
3
...times rated current
5 IK
Without the current limitation getting into effect at typically
1.2 x IN there would be a much higher overcurrent in the event
of an overload or short circuit.
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Reset
of the circuit breaker is only possible approximately
10 sec after tripping.
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Electronic circuit breaker ESS30-Sxxx-DC24V
Mounting examples for ESS30-S
Module 17plus
For technical data see section Power Distribution Systems
Retaining clip Y 311 978 01
Retaining clip for ESS30-S
G
E
R
M
A
N
Y
Installation example with ESS30-S
with optional retaining clip
Module 18plus
For technical data see section Power Distribution Systems
ON 107 (OFF 113)
4
7,5
130±0.8
13,1
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Electronic circuit breaker ESS30-Sxxx-DC24V
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All dimensions without tolerances are for reference only. E-T-A reserves the right change
specifications at any time in the interest of improved design, performance and cost effectiveness, the right to make changes in these specifications without notice is reserved. Product
markings may not be exactly as the ordering codes. Errors and omissions excepted.
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