FAQ for the OMRON H3YN-2 AC100–120 V Solid-State Timer:

1. What is the H3YN-2 AC100–120 V timer?

The H3YN-2 AC100–120 V is a plug-in solid-state timer from OMRON’s H3YN series. It offers user-selectable time ranges, multiple operating modes, and a DPDT contact output for precise timing control in industrial automation applications.

2. What is the rated supply voltage and allowable range?

The timer is rated for 100 to 120 VAC at 50/60 Hz. It operates reliably within 85 % to 110 % of the rated voltage. Reset voltage is 10 % max of the rated supply voltage.

3. What time-range options are available?

This short-time-range model supports one selectable range from:

0.1 s to 10 s

1 s to 100 s (10 s max.)

0.1 min to 1 min

1 min to 10 min

Selection is made via the front-panel DIP switches.

4. Which operating modes does it support?

You can choose between four modes with DIP switches:

ON-delay

Interval

Flicker OFF start

Flicker ON start

5. What are the output contacts and load ratings?

The H3YN-2 features a DPDT (2 CO) relay output. Contact ratings:

Resistive load: 5 A at 250 VAC (cos φ = 1)

Minimum applicable load: 1 mA at 5 VDC (P reference value)

6. How do I wire the timer?

Insert the timer into an 8-pin socket (e.g., PYF08A series).

Supply 100–120 VAC to pins A1 (phase) and A2 (neutral).

Connect your load between the COM, NO, and NC terminals according to the chosen mode.

Ensure all connections are tight to prevent contact resistance.

7. What socket and mounting options are available?

Compatible sockets and mounting methods include:

A hold-down clip (Y92H-3/Y92H-4) or flush adapter (Y92F-78) can secure the timer in high-vibration environments.

8. What are the ambient operating conditions?

Temperature: –10 °C to +50 °C (no icing)

Humidity: 35 % to 85 % RH (no condensation)

9. Which safety standards and certifications does it meet?

The H3YN-2 conforms to:

EN 61812-1 (solid-state timer standard)

IEC 60664-1 (low‐voltage insulation)

EMC Directives

CE, UL, and CSA certifications

10. How do I set and fine-tune the timing value?

Select the desired range and mode using the DIP switches on the front.

Adjust the timing with the rotary knob; use a small flathead screwdriver for precision.

Lock the knob in place (if your socket offers a lock feature) to avoid accidental changes.

11. How can I read its operating status?

Most installations include two LEDs:

A green LED indicates when power is on and the timer is in its active period.

A red LED flashes or stays lit to show the timing cycle or that the output contacts are energized.

(Check your specific socket/manual for exact LED functions.)

12. What maintenance is recommended?

Periodically clean the timer and socket to remove dust or debris.

Verify tightness of all terminal connections.

Test each mode and range against a calibrated reference every 1 – 2 years.

Replace the timer after 5 – 7 years of continuous service or if timing accuracy drifts.

13. What common issues might I encounter and how do I troubleshoot?

No power or LEDs off: verify line voltage, fuses, and wiring polarity.

Contacts fail to switch: check load rating and coil voltage; inspect for mechanical wear.

Timing inaccurate: confirm DIP switch settings and knob calibration; test with known reference.

14. What are typical applications for the H3YN-2?

Fan and pump cycle control

Motor start-up delays

Conveyor and packaging line timing

Batch process interval control

Warning light and alarm durations

15. What accessories are available?

Hold-down clips: Y92H-3 (PYF@A sockets), Y92H-4 (PY@ and PYF@M sockets)

Flush-mount adapter: Y92F-78

Multi-socket mounting plates (single and 18-position): PYP-1, PYP-18

Terminal covers: PYCZ-C08 (8-pin), PYCZ-C14 (14-pin)

16. Where can I find documentation and technical support?

Datasheets, user manuals, and CAD files are available from OMRON’s official website or QTE Technologies.