Schneider Electric Multifunction Timer Relay - Harmony Time Series - RE22R2MMW
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Product Information
Full details
The Schneider Electric Harmony Time Series DIN Rail Mount Timer Relay (RE22R2MMW) is designed for automation system engineers and technicians requiring precise timing control. Its key benefit is flexible, multi-functional timing in a compact, DIN-rail mountable form factor. A potential caveat is the complexity of initial setup for users unfamiliar with timer relays. This device offers adjustable time settings from 0.1 seconds to 300 hours, a slim 22.5mm profile, lockable cover, and precise dial control, making it suitable for applications like automated doors, alarms, and lighting control.
All features
| Series | Harmony Time Series |
|---|---|
| Model Part Number | RE22R2MMW |
| Brand | Schneider Electric |
Extended Product Information
FAQs
What is the maximum time delay this relay can provide?
The Harmony Time Series Timer Relay offers a maximum time delay of 300 hours (360,000 seconds).
Can this timer relay be used with AC and DC power supplies?
Yes, it has a wide rated control supply voltage range of 12-240V AC/DC, making it compatible with both AC and DC power sources.
How is the time and function set on this relay?
Time and function are set using precise rotary dials located on the front of the unit, which can be locked to prevent accidental changes.
What type of output contacts does this relay have?
This model features DPDT (Double Pole Double Throw) contact configuration.
What are the typical applications for this timer relay?
Typical applications include automated doors, alarm systems, lighting control, motor start control, conveyor belt sequencing, and general industrial automation processes.
Does this relay require special mounting hardware?
No, it is designed for standard 35mm DIN-rail mounting, which is common in industrial control panels.
What protection ratings does the device have?
It has IP50 protection for the front panel, IP40 for the housing, and IP20 for the terminal blocks, conforming to IEC 60529 standards.
Troubleshooting
Relay does not power on
Verify that the control voltage is correctly applied to terminals A1 and A2 and that the voltage is within the 12-240V AC/DC range. Check wiring connections for security.
Output contacts do not switch
Confirm that the input control voltage is present and within range. Check if the selected function and time delay have elapsed. Verify that the load connected to the output is within the relay's current and voltage ratings.
Inaccurate timing
Ensure the time range and specific time delay are set correctly on the rotary dials. Check for any external interference or voltage fluctuations that might affect timing. Refer to the specific function's timing diagram in the product manual.
Relay Nuisance Tripping
Verify that the input signal is stable and not subject to intermittent interruptions. Review the selected function to ensure it matches the application's requirements, preventing unintended activation.
Pros and Cons
Pros
- Highly versatile with multiple timing functions and a broad time range.
- Compact and slim design is ideal for panel space optimization.
- Easy to set up and adjust with a lockable dial control.
- Wide voltage input range (12-240V AC/DC) ensures broad compatibility.
- Robust construction with good shock and vibration resistance.
Cons
- Initial setup may require some technical knowledge for optimal configuration.
- The 22.5mm width might be a limitation in extremely compact applications requiring even smaller footprints.
- Primarily designed for industrial automation; may be overkill for simple timing tasks.
- Documentation complexity for advanced settings could be a learning curve.
Setup, Compatibility & Care
Setup:
- Mounting: Mount the relay securely on a standard DIN-rail (35mm) within the control panel.
- Wiring: Connect the control voltage to terminals A1 and A2. Wire the load and control circuits to the output terminals according to the desired function and contact configuration (DPDT).
- Configuration: Set the desired time range and function using the rotary dials. Ensure the lockable cover is engaged to prevent accidental changes.
- Time Adjustment: Fine-tune the time delay using the internal adjustment knob if required by the specific function.
Compatibility:
- Voltage: Compatible with 12-240V AC/DC control supply voltages.
- Mounting: Designed for standard 35mm DIN-rail mounting.
- Standards: Compliant with international standards like IEC 61812-1, UL, CSA, GL, RCM, EAC, CCC, and China ROHS.
Care:
- Cleaning: Keep the device clean by wiping with a dry or slightly damp cloth. Avoid using solvents or abrasive cleaners.
- Environment: Operate within specified temperature and humidity ranges. Ensure adequate ventilation around the mounted relay.
- Inspection: Periodically check wiring connections for tightness and signs of wear. Ensure the rotary dials operate smoothly.