Omron MY4 14-Pin Plug-in Relay - 4PDT 6A 24VAC
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Tameson UKOmron My4 14-Pin Plug-In Relay 4Pdt 6A 24Vac - My4 5700A
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Product Information
Full details
This professional-grade Omron MY4 relay is designed for industrial automation and control systems requiring reliable switching of multiple circuits. It offers a 4PDT (four-pole double-throw) configuration with a 24 VAC coil and 6A current capacity, allowing for complex control logic and power distribution. A key benefit is its visual mechanical indicator for easy status monitoring. One caveat is its specific 14-pin base, requiring a compatible socket.
All features
| Brand | Omron |
|---|
Extended Product Information
FAQs
What is a 4PDT relay?
4PDT stands for Four-Pole Double-Throw. It means the relay has four independent sets of contacts, and each set can connect to either of two terminals (Normally Open or Normally Closed).
Does this relay come with a socket?
No, the Omron MY4 relay is sold separately from its required 14-pin socket. You will need to purchase a compatible 14-pin socket.
What is the maximum switching capacity?
The nominal current capacity is 6A. The maximum switching voltage is 250 VAC or 220 VDC.
How can I tell if the relay is active?
This model features a mechanical indicator, often called a flag, that visually shows whether the relay coil is energized and the contacts have switched.
Can this relay be used for DC loads?
Yes, it can switch DC loads up to 220V and a corresponding current rating suitable for DC at that voltage, however, the primary rating specified is 6A nominal.
What does 'Monostable' mean?
Monostable means the relay returns to its default de-energized state when the coil voltage is removed. It requires continuous power to the coil to maintain its energized state.
What is the coil resistance?
The coil resistance for this 24 VAC version is approximately 180 Ohms.
Troubleshooting
Relay does not energize when control voltage is applied.
Verify the 24 VAC control voltage is present at the coil terminals (A1/A2) of the socket. Check wiring connections to the socket and ensure the relay is fully seated. Confirm the coil resistance is within specification if possible.
Contacts do not switch when relay is energized.
Ensure the relay is correctly seated in the socket. Check that the control voltage is sufficient to energize the coil. If the relay has been in service for a long time, the contacts may be worn or damaged.
Mechanical indicator does not move.
This typically indicates the relay coil is not being energized or the internal mechanism is faulty. Follow steps for 'Relay does not energize'.
Overheating of the relay or socket.
Check for loose wiring connections which can cause high resistance. Ensure the load current does not exceed the 6A rating. Verify the correct relay type is used for the application.
Pros and Cons
Pros
- Versatile 4PDT switching for multiple control paths.
- Clear visual status indication via mechanical flag.
- Standard 24 VAC coil simplifies integration into existing systems.
- Reliable plug-in connection system for easy maintenance.
- Compact footprint suitable for control panel density.
Cons
- Requires a specific 14-pin relay socket (not included).
- 24 VAC coil may require a separate transformer if not readily available.
- Monostable design requires continuous coil power to remain energized.
- 6A current rating may be insufficient for high-power loads.
Setup, Compatibility & Care
Setup:
- Ensure the relay is compatible with your control voltage (24 VAC).
- Select a suitable 14-pin relay socket (Omron part number P/N or equivalent).
- Mount the socket securely in your control panel.
- Wire the socket terminals according to your circuit diagram, paying close attention to coil connections (terminals A1/A2) and contact configurations.
- Insert the Omron MY4 relay firmly into the socket until it clicks or feels securely seated.
- Connect the load and control wiring to the appropriate socket terminals.
Compatibility:
- Requires a 14-pin relay socket designed for this form factor.
- Compatible with control systems providing a stable 24 VAC power source.
- Suitable for switching loads up to 6A at 250 VAC or 220 VDC.
Care:
- Keep the relay clean and free from dust and moisture. Use a dry cloth for cleaning.
- Avoid exposing the relay to excessive vibration or shock.
- Periodically inspect connections for signs of corrosion or wear.