Omron H3DK-M2A Timer Relay - 12VDC - DPDT
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Product Information
Full details
The Omron H3DK-M2A Timer Relay is designed for industrial automation professionals needing precise and flexible timing control. Its key benefit is the versatility offered by 8 operational modes, including off-delay, and dual DPDT outputs, ensuring reliable switching for a wide range of applications. A potential caveat is the DC 12V power requirement, which must be matched to the control system. This compact, DIN-rail mountable unit provides dependable time-based control with flexible timing ranges and robust output capabilities.
All features
| Brand | Omron |
|---|
Extended Product Information
FAQs
What is the maximum timing range for this relay?
The Omron H3DK-M2A offers a very wide timing range, from 0.1 seconds up to 1,200 hours.
How many independent outputs does this timer relay have?
It features dual (two) DPDT (Double Pole Double Throw) relay outputs, each rated at 5A.
What type of power supply does the H3DK-M2A require?
This specific model requires a 12VDC (Direct Current) power supply.
Can this timer be used for simple on-delay or off-delay functions?
Yes, the H3DK-M2A includes 8 operational modes, which cover standard functions like on-delay and off-delay, among others.
What is the physical size and mounting method?
It has a compact 22.5mm width and is designed for standard 35mm DIN-rail mounting.
How are the operational mode and time range selected?
These settings are selected using rotary switches located on the front panel of the unit.
What is the maximum switching capacity of the output relays?
Each of the DPDT output relays is rated for a maximum switching current of 5A.
Troubleshooting
Relay does not energize when power is applied
Verify that the 12VDC power supply is correctly connected and providing the required voltage. Check that the power switch (if applicable) is in the 'on' position. Ensure the selected operational mode is appropriate for immediate activation.
Timing is inaccurate or inconsistent
Confirm that the power supply is stable and within the specified voltage range. Ensure the time setting switches are accurately positioned. Check for any external electrical noise that might be interfering with the timing circuit.
Output relay contacts do not switch
Confirm that the operational mode and time setting allow for the output to activate. Check that the input signal required for the selected mode is present. Verify that the load connected to the output contacts does not exceed the 5A rating.
Unit powers off unexpectedly
Check the stability and capacity of the 12VDC power supply. Ensure connections are secure and not loose. Inspect for any signs of overheating, which might indicate an internal issue or overload.
Pros and Cons
Pros
- Highly versatile with 8 distinct operational modes.
- Dual DPDT outputs provide robust switching capabilities.
- Extremely wide timing range suitable for diverse applications.
- Compact and easy to install on standard DIN rails.
- Reliable performance for critical industrial processes.
Cons
- Requires a specific 12VDC power supply, limiting compatibility with AC systems.
- Programming/setting the operational mode and time can be complex for novice users.
- No digital display for real-time time remaining, requiring external monitoring.
- Screw terminals may require careful tightening to prevent loosening in high-vibration environments.
Setup, Compatibility & Care
Setup:
- Mounting: Securely mount the H3DK-M2A onto a standard 35mm DIN rail.
- Wiring: Connect the 12VDC power supply to the designated power terminals. Wire the control inputs and the DPDT output contacts according to the desired application diagram.
- Mode and Time Setting: Select the desired operational mode and set the precise time range using the rotary switches on the front panel. Refer to the manual for specific switch combinations.
Compatibility:
- Power Supply: Requires a stable 12VDC power source. Ensure the power supply can meet the relay's operational current demands.
- Control Signals: Compatible with standard industrial DC control signals.
- Load Compatibility: The DPDT outputs are rated for 5A. Ensure the connected loads do not exceed this rating for resistive or inductive loads (consult manual for inductive load derating).
Care:
- Keep the unit clean and free from dust and moisture, especially around the terminal blocks and switches.
- Periodically check wiring connections for tightness, particularly in environments with vibration.
- Ensure adequate ventilation around the unit to prevent overheating.