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Solid-state Timer
H3FA
CSM_H3FA_DS_E_7_2
Please read and understand this catalog before purchasing the products. Please consult OMRON representative if you have any questions or
comments. Refer to Safety Precautions on page 10.
DIP Model Timer for PC Board Use Provides
Contact and Solid-state Output
• Four time ranges are selectable.
Models suffixed [email protected]@: 1 s, 10 s, 1 min, 10 min.
Models suffixed [email protected]@: 6 s, 60 s, 6 min, 60 min.
• Timer can be cleaned while mounted on a PC Board with the sealing
tape affixed.
• Twenty-four-pin IC socket can be used for mounting the Timer.
• Mountable on a 1-inch pitch rack.
(H 19.5 × W 36.9 × D 17.75 mm)
For the most recent information on models that have been certified for
safety standards, refer to your OMRON website.
Model Number Structure
Note: This model number legend includes combinations that are not available. Before ordering, please check the List of Models on page 2 for
availability.
H3FA- @ @ @ @
1
2
3
4
1. Time-limit contact
None: Contact outputs (SPST-NO + SPST-NC)
S:
Solid-state outputs
2. Time range
A:
1 s to 10 min
B:
6 s to 60 min
3. Operation/resetting system
None: Time-limit operation/power-OFF resetting and external
resetting, Integrating operation/power-OFF resetting and
external resetting
U:
Instantaneous operation, time-limit resetting/external
resetting
4. Supply voltage
For contact output models
5DC:
5 V DC
6DC:
6 V DC
12DC:
12 V DC
24DC:
24 V DC
For solid-state output models
5/6DC:
5/6 V DC
12/24DC: 12/24 V DC
1
H3FA
Ordering Information
■ List of Models
Item
Model
H3FA-A
H3FA-B
H3FA-SA
H3FA-SB
H3FA-AU
H3FA-BU
H3FA-SAU
H3FA-SBU
Operation/resetting
system (See note.)
Time-limit operation/power-OFF resetting and external
resetting,
Integration operation/power-OFF resetting and external
resetting
Instantaneous operation, time-limit resetting/external
resetting
Time-limit contact
Contact output
(SPST-NO + SPST-NC)
Contact output
(SPST-NO + SPST-NC)
Instantaneous
contact
---
Mounting method
Surface mounting (with IC socket or direct mounting on PC Board)
Solid-state output
Solid-state output
Time range
1 s to 10 min 6 s to 60 min 1 s to 10 min 6 s to 60 min 1 s to 10 min 6 s to 60 min 1 s to 10 min 6 s to 60 min
Supply
voltage
5 V DC
H3FA-A 5DC H3FA-B 5DC ---
---
H3FA-AU
5DC
H3FA-BU
5DC
---
---
6 V DC
H3FA-A 6DC H3FA-B 6DC ---
---
H3FA-AU
6DC
---
---
---
12 V DC
H3FA-A
12DC
H3FA-B
12DC
---
---
H3FA-AU
12DC
H3FA-BU
12DC
---
---
24 V DC
H3FA-A
24DC
H3FA-B
24DC
---
---
H3FA-AU
24DC
H3FA-BU
24DC
---
---
5/6 V DC
---
---
H3FA-SA
5/6DC
H3FA-SB
5/6DC
---
---
H3FA-SAU
5/6DC
H3FA-SBU
5/6DC
12/24 V DC ---
---
H3FA-SA
12/24DC
H3FA-SB
12/24DC
---
---
H3FA-SAU
12/24DC
H3FA-SBU
12/24DC
Note: The desired operation/resetting system is selected by short-circuiting and opening the specified terminals.
Specifications
■ Time Ranges
Model
Rated time
Time setting range
H3FA-A
1s
0.1 to 1 s
H3FA-AU
10 s
1 to 10 s
H3FA-SA
1 min
0.1 to 1 min
H3FA-SAU
10 min
1 to 10 min
H3FA-B
6s
0.6 to 6 s
H3FA-BU
60 s
6 to 60 s
H3FA-SB
6 min
0.6 to 6 min
H3FA-SBU
60 min
6 to 60 min
Note: 1. The above timing ranges apply when the internal variable resistor of H3FA is used.
2. The external variable resistor may also be used by opening the terminal connected to the internal variable resistor.
3. Wire the appropriate terminal to select a time setting range. Refer to Rated Time and Terminal Connections on page 4 for details.
2
H3FA
■ Ratings
Item
H3FA-A/ H3FA-B
H3FA-AU/ H3FA-BU
Rated supply voltage
5 V DC, 6V DC, 12V DC, 24 V DC (See note 1.)
Operating voltage range
5 V DC:
90% to 110% of rated supply voltage
6, 12, 24 V DC: 85% to 110% of rated supply voltage
Power consumption
5, 6 V DC:
12 V DC:
24 V DC:
Control outputs
Contact output: SPST-NO + SPST-NC,
3 A at 250 V AC with resistive load,
Minimum applied load: 10 mA at 5 V DC
(Failure level: P, reference value)
Ambient temperature
Operating:
Storage:
Ambient humidity
35% to 85%
approx. 230 mW
approx. 270 mW
approx. 330 mW
H3FA-SA/ H3FA-SB
H3FA-SAU/ H3FA-SBU
5/6 V DC (See note 1.)
12/24 V DC (See notes 1 and 2.)
5/6 V DC:
12 V DC:
24 V DC:
approx. 80 mW
approx. 100 mW
approx. 240 mW
Solid-state output: 150 mA max. at 30 V DC
Residual voltage: 1.0 V max.
−10°C to 55°C (with no icing)
−25°C to 65°C (with no icing)
Note: 1. Permissible ripple: 20% max. (3% max. at 5, 6 V DC-operated models)
Where,
X X/Mean value × 100 ≤ 20 (%) max.
Mean
2. Supply voltage can be selected by short-circuiting (12 V DC) or opening (24 V DC) the specified terminals.
■ Characteristics
Accuracy of operating time ±0.5% FS max. (See notes 1 and 3.)
Setting error
0 to 30 % FS max. (at 20°C , at rated voltage)
Reset time
10 ms max.
Influence of voltage
±1% FS max. (2% FS max. for 5, 6, 5/6 V DC-operated models)
Influence of temperature
±5% FS max. (See note 1.)
Insulation resistance
100 MΩ min. (at 500 V DC)
Dielectric strength
1,500 V AC, 50/60 Hz for 1 min (between control output and operating circuit) (See note 2.)
1,000 V AC, 50/60 Hz for 1 min (between contacts not located next to each other) (See note 2.)
Vibration resistance
Destruction: 10 to 55 Hz with 0.375-mm single amplitude in 3 directions for 2 hour each
Malfunction: 10 to 55 Hz with 0.25-mm single amplitude in 3 directions for 10 minutes each
Shock resistance
Destruction: 1,000 m/s2 3 times each in 6 directions on 3 axes
Malfunction: 100 m/s2 3 times each in 6 directions on 3 axes
Life expectancy
Mechanical: 10,000,000 operations min. (under no load at 1,800 operations/h)
Electrical: 100,000 operations min. (3 A at 250 V AC, resistive load at 1,800 operations/h)
Approved safety standards UL508, CSA C22.2 No.14
Weight
Contact output models:
approx. 15 g
Solid-state output models: approx. 10 g
Note: 1. Add or subtract 10 ms to the ratings when using a timer with a rated time of 1 s.
2. Applicable to contact output models.
3. This value assumes that the adjustment on the H3FA is used. (It does not apply if an externally connected resistor is used. For details,
refer to External Resistors and Operating Time (Reference Value) on page 8 for details.)
Switching operations (x104)
■ Life-test Curve (Reference Values)
1,000
700
500
300
100
70
50
24 VDC L/R=7 ms
24 VDC cosφ=1
30
10
7 250 VAC cosφ=0.4
5
0
1
250 VAC cosφ=1
2
3
4
Load current (A)
3
H3FA
Connections
■ Block Diagrams
Note: All diagrams are views from the top.
H3FA-A, H3FA-B, H3FA-SA, H3FA-SB
When the input voltage is applied, the CR oscillator circuit in the Timer starts to oscillate via the power supply circuit, the counter circuit counts up
to the preset setting, and an output signal is produced. A transistor amplifies this signal to drive the load.
The voltage across the H3FA-SA and -SB (solid-state output loads) is the load input voltage minus the residual voltage when the transistor turns
ON.
Contact Output
Solid-state Output
Short for 12 V DC
Open for 24 V DC (See note.)
Output amplifier
circuit
Counter circuit
CR oscillator
circuit
Voltage stabilizer circuit
Power
supply
Power supply
circuit
For the external resistor
For the internal variable
resistor
Output amplifier
circuit
Counter circuit
CR oscillator
circuit
Voltage stabilizer circuit
Power
supply
Power supply
circuit
For the external resistor Contact output (NO contact for
time-limit operation)
For the internal variable
resistor
Reset circuit
Reset circuit
Reset input
Time range selector
Reset input
Contact output (NC contact for
time-limit operation)
Time range
selector
Load
5 to 24 V DC
10: Solid-state output terminal
12: Terminal for the internal load surge absorbing diode
Note: When using 12/24 V DC-operated models.
H3FA-AU, H3FA-BU, H3FA-SAU, H3FA-SBU
Contact Output
Solid-state Output
Reset circuit
Output amplifier
circuit
CR oscillator
circuit
Voltage stabilizer circuit
Power
supply
Power supply
circuit
Output amplifier
circuit
Counter circuit
CR oscillator
circuit
Voltage stabilizer circuit
Power supply
circuit
Power
supply
Counter circuit
Short for 12 V DC
For the external resistor
Open for 24 V DC (See note.)
For the internal variable resistor
For the external resistor
For the internal variable resistor
150 mA max.
Load surgeabsorbing diode
Start circuit
Reset circuit
Start circuit
Reset input
Reset input
Time range selector
Load
5 to 24 V DC
Time range selector
Note: When using a 12/24 V DC-operated model.
■ Rated Time and Terminal Connections
Model
Terminal connection
1
2
3
1
2
1
3
2
3
1
H3FA-A/-SA/-AU/-SAU
1s
10 s
1 min
10 min
H3FA-B/-SB/-BU/-SBU
6s
60 s
6 min
60 min
2
3
Note: 1. Short-circuit terminals 21 and 22 when using the internal variable resistor of H3FA.
2. An external resistor can also be used by opening terminals 21 and 22. When using an external resistor (1 MΩ for H3FA-A/-SA, 3 MΩ for H3FA-B/
-SB), connect it between terminals 21 and 23.
4
H3FA
Operation
■ Timing Charts and External Connections
Wire the inputs so that the time range selector (terminals 2 and 3), reset input (terminal 4), and start input (terminal 6) are either connected or not
connected to power supply terminal 1. Do not wire the terminals so that an external voltage is applied (∗1) to these input terminals or so that the
negative side of the power supply is connected to these input terminals but not connected to power supply terminal 1 (∗2).
No isolation is provided, so if voltage is applied to these terminals, unwanted current paths will be created and destroy the internal circuits.
Voltage Applied to Terminals Other than Power Supply Terminal 1 (∗1)
Input Terminals 2, 3, 4, and 6 Connected to the Negative Side of the Power Supply without Being Connected to Power Supply Terminal 1 (∗2)
Recommended Wiring
Connection or No Connection to Power Supply Terminal 1
5
H3FA
H3FA-A, H3FA-B, H3FA-SA, H3FA-SB
Standard Operation (ON-delay operation)
Integration Operation
When the power is turned ON and the set time has elapsed, an
output is produced. (Power turns ON when power terminals 1 and 24
are shorted or when terminals 13 and 15 are shorted when using a
12/24 V DC-operated model with a 12 V DC power supply.)
When connecting an external resistor to the Timer, connect it
between terminals 21 and 23, and open terminals 21 and 22. Refer
to External Resistors and Operating Time (Reference Value) on page
8. When operating with an external reset input, short terminals 1 and
4. The Timer will start operating even if reset terminals 1 and 4 are
open when the power is turned ON.
In this case, the current flow is approximately 0.1 mA. If a contact is
used for control, use a contact with high contact reliability, If a
transistor is used for control, use an ICEO of 10 μA and a VCE (sat) of
0.5 V or less.
By opening the terminals connected to the internal variable resistor,
Timer operation can be interrupted to enable the Timer to perform
time integration operations. Interrupt Timer operation by opening
terminals 21 and 22 when using the internal variable resistor or
terminals 21 and 23 when using the external resistor. Timer
operation can be resumed by reconnecting the terminals.
ON
Power supply
(terminals 1 and 24)
(See note.)
OFF ON
10 ms
min.
Short
Short
Open
Reset input
(terminals 1 and 4)
SPST-NO contact output
(terminals 13 and 16)
Solid-state output
Set time
(terminals 1 and 10)
OFF
Set time
Set time Set time
SPST-NC contact output
(terminals 9 and 12)
ON
OFF ON
Power supply (terminals 1 and 24)
(See note.)
For internal variable resistor
(terminals 21 and 22)
For external resistor
(terminals 21 and 23)
Short Open
Short
Open
Short
10 ms
min.
Reset input
(terminals 1 and 4)
SPST-NO contact output
(terminals 13 and 16)
Solid-state output
(terminals 1 and 10)
T1
T2
T3
T4
Tn
SPST-NC contact output
(terminals 9 and 12)
Note: When using a 12/24 V DC-operated model with a 12 V DC
power supply, short terminals 13 and 15.
Note: 1. Control output is provided when the set time has elapsed
(T1 + T2 or T3 + T4).
2. When using a 12/24 V DC-operated model with a 12 V DC
power supply, short terminals 13 and 15.
Contact Output (Top View)
Contact Output (Top View)
Solid-state Output (Top View)
Solid-state Output (Top View)
When using the 12/24 V DC-operated model with a 24 V DC power
supply, open terminals 13 and 15.
When using the 12/24 V DC-operated model with a 24 V DC power
supply, open terminals 13 and 15.
6
H3FA
H3FA-AU, H3FA-BU, H3FA-SAU, H3FA-SBU
One-shot Output Operation
OFF-delay Operation
Turn ON the power and apply a start input (short terminals 6 and 1).
(Power turns ON when power terminals 1 and 24 are shorted or
when terminals 13 and 15 are shorted when using a 12/24 V DCoperated model with a 12 V DC power supply.) An output is produced
immediately and is reset when the set time has elapsed.
Turn ON the power and apply a start input (short terminals 6 and 1).
(Power turns ON when power terminals 1 and 24 are shorted or
when terminals 13 and 15 are shorted when using a 12/24 V DCoperated model with a 12 V DC power supply.) An output is produced
immediately. If the start input is applied constantly, however, the reset
input can be applied until the set time elapses to stop time-limit
operation. (An output is produced when the start input is applied
even when the constant reset input is ON prior to the start input.)
If the reset input is applied (short terminals 4 and 1) with no start
input (open terminals 6 and 1) while the Timer is operating, the Timer
stops operating and the output is reset.
When operating with an external start or reset input, the current flow
from terminal 6 to terminal 1 (start input) or from terminal 4 to
terminal 1 (reset input) is approximately 0.1 mA. A highly reliable
contact is therefore recommended for the start and reset inputs.
Use an ICEO of 10 μA and a VCE (sat) of 0.5 V or less for transistor
control. When connecting an external resistor to the Timer, connect it
between terminals 21 and 23, and open terminals 21 and 22.
Power supply
(terminals 1 and 24)
(See note 1.)
Power supply
(terminals 1 and 24)
(See note 1.)
ON
Short
(See
note 2.)
10 ms
min.
Reset input
(terminals 1 and 4)
T
T
ON
10 ms
min.
Open
Start input
(terminals 1 and 6)
SPST-NO contact output
(terminals 13 and 16)
Solid-state output
(terminals 1 and 10)
The time-limit operation starts when the reset input terminals are
opened, and the output is reset when the set time has elapsed.
When operating with an external start or reset input, the current flow
is approximately 0.1 mA. A highly reliable contact is therefore
recommended for the start and reset inputs. Use an ICEO of 10 μA
and a VCE (sat) of 0.5 V or less for transistor control.
T
t1
Start input
(terminals 1 and 6)
Short
Open
Reset input
(terminals 1 and 4)
SPST-NO contact output
(terminals 13 and 16)
Solid-state output
(terminals 1 and 10)
T
t1
T
t2
T
t3
SPST-NC contact output
(terminals 9 and 12)
SPST-NC contact output
(terminals 9 and 12)
Note: 1. When using a 12/24 V DC-operated model with a 12 V DC
power supply, short terminals 13 and 15.
2. The start input is disabled during the time limit.
3. T denotes the set time. t1 < T
Note: 1. When using a 12/24 V DC-operated model with a 12 V DC
power supply, short terminals 13 and 15.
2. T denotes the set time. t1, t2, and t3 < T
Contact Output (Top view)
Contact Output (Top view)
Contact output
(SPST-NC contact for
time-limit operation)
Solid-state Output (Top View)
Solid-state Output (Top View)
When using the 12/24 V DC-operated model with a 24 V DC power
supply, open terminals 13 and 15.
When using the 12/24 V DC-operated model with a 24 V DC power
supply, open terminals 13 and 15.
7
H3FA
■ External Resistors and Operating Time (Reference Value)
H3FA-B/-SB/-BU/-SBU
Operating time (%)
• Use an external resistor rated at about
0.1 W/1 MΩ for H3FA-A, -SA, -AU, and -SAU
or 0.1 W/3 MΩ for H3FA-B, -SB, -BU, and SBU.
• Do not run the leads parallel to power lines
and implement other required measures
against external noise. Do not use leads that
are longer than 30 cm.
• The diagrams on the right show typical data.
Setting differences exist for individual
products. If accuracy is required, use a
variable resistor and adjust the time.
(If the leads are too long, the time will vary
somewhat and variations in the operating
time will increase.)
H3FA-A/-SA/-AU/-SAU
Operating time (%)
Refer to the following characteristics diagrams
when using an external resistor.
120
100
80
120
100
80
60
60
40
40
20
20
0
0.5
1
1.5
External resistor (MΩ)
0
1
2
3
4
External resistor (MΩ)
■ Extending the Reset Time
DIP Timers have a shorter reset time than that of conventional timers
for use in solid-state circuit applications. To extend the reset time to
that of conventional timers, i.e., about 100 ms, during operation,
connect the Timer to a capacitor from the table as shown in the
following diagram. The reset time after the set time has elapsed will
vary with the load relay, so select an appropriate capacitor for the
load relay.
Rated voltage
Capacitor capacity
12 V DC
10 μF, 25 V
24 V DC
4.7 μF, 50 V
5 and 6 V DC
22 μF, 16 V
24 23 22 21
C
1
2
3
4
8
H3FA
Dimensions
Note: All units are in millimeters unless otherwise indicated.
H3FA-A, H3FA-B, H3FA-SA, H3FA-SB
Mounting holes (Top view)
36.9
H3FA-A/-B
Twelve, 1.0 dia. holes
17.75
17.75
36.9
19.5
H3FA-SA/-SB
Twelve, 1.0 dia. holes
0.5
3.3
15.24
2.54
0.6
0.4
H3FA-AU, H3FA-BU, H3FA-SAU, H3FA-SBU
Mounting holes (Top View)
H3FA-AU/-BU
36.9
17.75
17.75
H3FA-SAU/-SBU
36.9
19.5
0.5
3.3
15.24
2.54
0.6
0.4
[email protected] trimmer hole position
6 dia.
10.8
17.75
36.9
9
H3FA
Safety Precautions
■ Precautions for Correct Use
Observe the following items to ensure the safe use of this product.
• Do not use excessive force to turn the time setting knob. Otherwise,
it may be damaged.
• When more precise operating time settings are required, measure
the operating time prior to use and adjust the time setting knob
accordingly.
• Be very careful when handling terminal leads.
• Do not touch terminals with hands or objects that may be statically
charged from mounting, transport, or other activities. Otherwise,
the terminals may be damaged. Discharge static prior to handling
the Timers by touching a grounded object or by using another
method.
• Refer to the following diagram for the set values for various
operating times.
Environmental Precautions
• Store the H3FA within the specified ratings. If the H3FA has been
stored at a temperature of –10°C or lower, let it stand for 3 hours or
longer at room temperature before turning ON the power supply.
• Use the H3FA within the specified ratings for operating temperature
and humidity.
• Do not operate the H3FA in locations subject to sudden or extreme
changes in temperature, or locations where high humidity may
result in condensation.
• Do not use the H3FA in locations subject to vibrations or shock.
Extended use in such locations may result in damage due to stress.
• Do not use the H3FA in locations subject to excessive dust,
corrosive gas, or direct sunlight.
Usage Precautions
• Install a switch or circuit breaker that allows the operator to
immediately turn OFF the power, and label it to clearly indicate its
function.
• Be sure to wire the terminals correctly.
• Internal elements may be destroyed if a voltage outside the rated
voltage is applied.
• Maintain voltage fluctuations in the power supply within the
specified range.
Operating time (%)
■ Precautions for Safe Use
130
120
Operating
range
100
80
60
40
20
0
(S)
10 20 30 40 50 60 70 80 90 100
(L)
Set value (%)
• When cleaning the timer, confirm that the sealing tape (*) is
securely in place. Do not clean without this sealing tape affixed.
Use alcohol type (IPA, ethanol) solvent, which are less chemically
reactive. Note that use of other solvents may damage the materials
used for the Timer. Clean the Timer in less than 2 minutes. The
cleaning solution must be 50°C or less.
The tails of the connecting leads are solder-plated with
consideration given to temperature at the time of soldering. When
soldering the leads, keep the temperature at 260°C±5°C and
complete soldering within 10 s. Do not use ultrasonic cleaning..
sealing tape *
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
In the interest of product improvement, specifications are subject to change without notice.
10
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Information presented by Omron Companies has been checked and is believed to be accurate; however, no responsibility is
assumed for clerical, typographical or proofreading errors or omissions.
2015.9
In the interest of product improvement, specifications are subject to change without notice.
OMRON Corporation
Industrial Automation Company
http://www.ia.omron.com/
(c)Copyright OMRON Corporation 2015 All Right Reserved.
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