Metz Connect Converter - Closed compact series
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Product Information
Full details
This Metz Connect KRA-SR-M8/21 electrical relay is designed for industrial automation and electrical control applications, providing electrical isolation between logic and load. Its key benefit is ensuring stable connections and signal transfers in monitoring relay systems and electrical circuits. A potential caveat for users is that it operates with a specific AC/DC input voltage and requires careful wiring with screw-type terminals.
All features
| Series | Closed compact series |
|---|---|
| Model Part Number | 11064513 |
| Brand | Metz Connect |
Extended Product Information
FAQs
What type of connections does this relay use for the auxiliary circuit?
The relay uses screw-type terminals for connecting the auxiliary circuit (control input and load output).
What is the maximum AC voltage and current the output contacts can handle?
The single change-over contact is rated for a maximum of 250V AC and 6A.
Can this relay be used with both AC and DC control signals?
Yes, the relay is designed to operate with 24V AC and 24V DC control signals.
What are the physical dimensions of the relay?
The dimensions are approximately 22.5 mm in width, 60 mm in depth, and 61.3 mm in height.
Does the relay have a manual override feature?
Yes, it features a manual control level for direct operation or testing.
What is the purpose of the integrated protective circuit?
The integrated protective circuit helps to protect the relay and connected components from voltage spikes and transient overloads, improving reliability and lifespan.
What is the weight of the relay?
The relay weighs approximately 45 grams.
Troubleshooting
Relay does not activate when control signal is applied.
Verify the input voltage is within the 24V AC/DC range. Check wiring connections to the coil terminals for tightness and correct polarity (for DC). Ensure the manual control lever is not engaged in the 'off' position.
Load connected to the output is not switching.
Confirm the control signal is successfully energizing the relay (check LED indicator if applicable). Ensure the load wiring is correctly connected to the change-over contacts. Verify the load does not exceed the relay's 6A rating.
Relay chatter or intermittent operation.
Check for unstable input voltage. Ensure wiring connections are secure and free from vibration. Clean terminals if any signs of corrosion are present.
LED indicator is not functioning.
This model includes LED indicators. If the LED is off when the relay is energized, check the input voltage and wiring. If the LED is stuck 'on', there may be an internal fault.
Pros and Cons
Pros
- Provides essential electrical isolation for sensitive circuits.
- Robust construction suitable for industrial environments.
- Compact design saves valuable space in control panels.
- Includes manual control for easier testing and diagnostics.
- Integrated protective circuit enhances longevity.
Cons
- Requires specific 24V AC/DC input voltage.
- Screw terminals necessitate careful and precise wiring.
- Limited to 1 change-over contact, may not suit complex switching needs.
- No specific mention of advanced diagnostic features beyond basic checkback.
Setup, Compatibility & Care
Setup:
- Power Off: Ensure all power to the control system is disconnected before installation.
- Mounting: Mount the relay securely onto a DIN rail or suitable surface within a control panel. Its compact dimensions (22.5 x 60 x 61.3 mm) allow for dense mounting.
- Wiring: Connect the control input to a 24V AC or DC power source using the screw-type terminals. Ensure proper polarity if using DC.
- Load Connection: Wire the load to the change-over contact terminals (common, normally open, normally closed). Pay close attention to voltage and current ratings (up to 250V AC, 6A).
- Power On: Restore power to the system and test operation.
Compatibility:
- Input Voltage: Compatible with 24V AC and 24V DC control signals.
- Output Load: Suitable for loads up to 250V AC and 6A.
- Control Systems: Integrates with standard industrial control systems, PLCs, and monitoring relay systems.
Care:
- Environment: Operate within the specified temperature range of -20°C to 55°C. Avoid exposure to excessive moisture, dust, or corrosive agents.
- Cleaning: Disconnect power before cleaning. Use a dry or slightly damp cloth to wipe the exterior. Avoid solvents or abrasive cleaners.
- Inspection: Periodically inspect wiring connections for tightness and signs of wear or corrosion.