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This guide is for engineers, technicians, and hobbyists working with control systems and automation. The Omron MY4 14-Pin Relay offers versatile switching capabilities with its 4PDT configuration, enabling complex circuit control. A key consideration is its specific 24 VDC power requirement, necessitating a compatible power source. This relay features robust construction, clear status indication, and a lockable test button for safe operation and testing.
| Series | MY |
|---|---|
| Model Part Number | MY4 5736B |
| Brand | Omron |
The lockable push test button allows you to manually operate the relay contacts without energizing the coil. This is useful for testing circuits or setting up equipment safely. The 'lockable' feature means you can engage the test button and it will stay in that state until released.
No, this specific model (MY4 5736B) is designed for a 24 VDC coil. It cannot be directly used with AC power supplies. Using an incorrect voltage or AC power will damage the relay.
The maximum switching voltage is 250V AC and 220V DC. The maximum switching current is 6A.
Refer to the schematic diagram usually printed on the relay itself or consult the product datasheet. The pins are typically numbered, and the diagram will show which pins are for the coil (input) and which are the contacts for the four poles (NO/NC).
The coil resistance is 662 Ω, and the coil power consumption is 900mW.
The relay measures approximately 21.5mm (width) x 28mm (height) x 36mm (depth).
While the relay is designed for general-purpose switching, specific high-frequency applications should be verified against the relay's mechanical and electrical life specifications in the datasheet. Continuous high-frequency switching may reduce its lifespan.
Verify the 24 VDC power supply is correctly connected to the coil terminals and is within the operational voltage range (19.2-26.4V). Check the coil resistance (662 Ω) with a multimeter. Ensure the LED indicator is functioning; if not, the coil or LED may be faulty.
Use the push test button to manually cycle the contacts. If they function with the button but not with coil voltage, re-check coil power and wiring. If they do not function with the button, the relay mechanism may be jammed or damaged.
Ensure the relay is securely plugged into its socket and that the socket connections are clean and tight. Verify that the load current does not exceed the 6A rating. Check for excessive vibration or environmental factors that could affect contact integrity.
This usually indicates a faulty LED or an issue with the relay's internal circuitry. While the relay might still function mechanically, the lack of LED indication hinders status monitoring. Consider replacing the relay.
Setup: The Omron MY4 relay utilizes a standard 14-pin plug-in interface. Ensure you have a compatible 14-pin relay socket securely mounted. Wire the socket terminals according to the schematic, paying close attention to the coil voltage (24 VDC) and the NO/NC (Normally Open/Normally Closed) contacts for each of the four poles. Once wired, the relay can be inserted directly into the socket. Verify that the relay is firmly seated.
Compatibility: This relay operates on a 24 VDC coil supply (19.2-26.4V range). Ensure your power source meets these specifications. The maximum switching voltage is 250V AC and 220V DC, with a maximum switching current of 6A. Do not exceed these ratings.
Care: The MY4 relay is a sealed unit and generally requires no internal maintenance. Keep the relay and its socket clean and free from dust and moisture. Avoid exposing the relay to environments outside its specified operating temperature range. Periodically check wiring connections to the socket for tightness and signs of corrosion.
