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Solid-state Timer
H3FA
Please read and understand this catalog before purchasing the products. Please consult OMRON representative if you have any questions or
comments. Refer to "Warranty and Application Considerations" on page 12 and "Safety Precautions" on page 9.
DIP Model Timer for PC Board Use Provides
Contact and Solid-state Output
• Four time ranges are selectable.
Models suffixed -@A@: 1 s, 10 s, 1 min, 10 min.
Models suffixed -@B@: 6 s, 60 s, 6 min, 60 min.
• Timer operation may also be controlled through an external
variable resistor.
• 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)
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
Solid-state Timer
H3FA
1
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Table of Contents
Related Manuals for Omron H3FA
Summary of Contents for Omron H3FA
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Page 1: Model Number Structure
(H 19.5 × W 36.9 × D 17.75 mm) 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. -
Page 2: Ordering Information
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... - Page 3 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. ■ Life-test Curve (Reference Values)
- Page 4 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 M Ω for H3FA-A/-SA, 3 M Ω for H3FA-B/ -SB), connect it between terminals 21 and 23.
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Page 5: Operation
Operation ■ Timing Charts and External Connections Note: Do not apply voltage to any terminals other than the power supply terminals. Otherwise, the internal circuits may be damaged. 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 By opening the terminals connected to the internal variable resistor, output is produced. - Page 6 One-shot Output Operation OFF-delay Operation Turn ON the power and apply a start input (short terminals 6 and 1). 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...
- Page 7 10 µ F, 25 V 12 V DC that of conventional timers, i.e., about 100 ms, during operation, connect the Timer to a capacitor from the table as shown in the 4.7 µ F, 50 V 24 V DC following diagram. The reset time after the set time has elapsed will 22 µ...
- Page 8 Dimensions Note: All units are in millimeters unless otherwise indicated. H3FA-A, H3FA-B, H3FA-SA, H3FA-SB Mounting holes (Top view) H3FA-A/-B Twelve, 1.0 dia. holes H3FA-SA/-SB Twelve, 1.0 dia. holes Applicable Connecting Socket Standard 24-pin IC socket can be used to mount the Timer.
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Page 9: Safety 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 • Be very careful when handling terminal leads. longer at room temperature before turning ON the power supply. - Page 10 H3FA Solid-state Timer...
- Page 11 H3FA Solid-state Timer...
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Page 12: Warranty And Application Considerations
CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT LIABILITY. In no event shall the responsibility of OMRON for any act exceed the individual price of the product on which liability is asserted. IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS REGARDING THE...