1. Introduction
This manual provides essential information for the safe and efficient installation, operation, and maintenance of the ABB RT6 24DC Safety Relay (Model: RT6, Part Number: 2TLA010026R0000). Please read this manual thoroughly before attempting any installation or operation to ensure proper functionality and to prevent potential hazards. Keep this manual in a safe place for future reference.
2. Safety Information
Important: Always observe local and national safety regulations and standards when installing, operating, or maintaining this device. Failure to do so may result in serious injury or equipment damage.
- Only qualified personnel should install, operate, and service this equipment.
- Disconnect all power before performing any work on the relay or connected circuits.
- Ensure proper grounding to prevent electrical shock.
- Do not bypass or disable any safety features of the relay or the system it controls.
- Protect the device from moisture, dust, and extreme temperatures.
Safety Symbols:
- WARNING: Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
- CAUTION: Indicates a potentially hazardous situation which, if not avoided, could result in minor or moderate injury or equipment damage.
- NOTICE: Indicates important information not related to personal injury.
3. Product Overview
The ABB RT6 24DC Safety Relay is designed to monitor safety functions in industrial applications, ensuring machine and personnel safety. It features a compact design and is suitable for various safety circuits.
Figure 3.1: Front view of the ABB RT6 24DC Safety Relay. This image displays the compact housing, terminal blocks for wiring connections, and indicator LEDs for status monitoring.
Key Features:
- Compact design for space-saving installation.
- 24V DC operating voltage.
- Multiple safety outputs for flexible integration.
- Diagnostic LEDs for quick status indication.
- Easy wiring via removable terminal blocks.
4. Setup
4.1 Mounting
The RT6 safety relay is designed for DIN rail mounting. Ensure the DIN rail is securely fastened within the control cabinet. Snap the relay onto the DIN rail by hooking the top edge first, then pressing down until it clicks into place.
4.2 Wiring
WARNING: Ensure all power is disconnected before wiring. Incorrect wiring can lead to equipment damage or personal injury.
- Refer to the wiring diagram provided on the side of the unit or in the detailed technical documentation for specific terminal connections.
- Connect the 24V DC power supply to the designated power input terminals.
- Connect safety input devices (e.g., emergency stop buttons, light curtains) to the safety input terminals.
- Connect the safety outputs to the controlled devices (e.g., contactors, motor starters).
- Ensure all connections are secure and properly insulated.
4.3 Initial Power-Up
After completing all wiring, apply power to the system. Observe the diagnostic LEDs on the front panel. The power LED should illuminate, and other LEDs will indicate the status of the safety inputs and outputs.
5. Operating
5.1 Basic Operation
The RT6 safety relay operates automatically once correctly configured and powered. When all safety inputs are closed (i.e., no safety function is active), the safety outputs will activate, allowing the controlled machinery to operate. If any safety input opens, the safety outputs will immediately de-energize, bringing the machinery to a safe state.
5.2 Indicator Lights
The front panel features several LEDs to indicate the relay's status:
- Power LED: Illuminates when the relay receives power.
- Input LEDs: Indicate the status of the safety input channels (e.g., green for active, off for open).
- Output LED: Indicates the status of the safety outputs (e.g., green for active, off for de-energized).
- Fault LED: Illuminates or flashes to indicate a fault condition within the relay or the safety circuit. Refer to the troubleshooting section for fault codes.
5.3 Reset Procedures
After a safety function has been activated (e.g., an emergency stop button pressed), the safety relay typically requires a manual or automatic reset before the safety outputs can be re-energized. The reset method depends on the relay's configuration:
- Manual Reset: Press the designated reset button on the control panel after the safety circuit is restored.
- Automatic Reset: The relay automatically resets once the safety circuit is restored. This mode is generally used for specific applications and requires careful risk assessment.
6. Maintenance
Regular maintenance ensures the continued reliable operation of the ABB RT6 Safety Relay.
6.1 Inspection Schedule
- Monthly: Visually inspect the relay for any signs of physical damage, discoloration, or loose connections.
- Annually: Perform a functional test of the safety circuit, including the relay, by activating each safety input device (e.g., pressing E-stop, breaking light curtain beam) and verifying that the safety outputs de-energize.
6.2 Cleaning
CAUTION: Disconnect power before cleaning.
Clean the exterior of the relay with a soft, dry cloth. Do not use abrasive cleaners or solvents, as these can damage the housing. Ensure no dust or debris accumulates around the terminals or ventilation openings.
7. Troubleshooting
If the RT6 safety relay is not functioning as expected, refer to the following table for common issues and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Relay not powering on (Power LED off) | No 24V DC supply; Incorrect wiring; Blown fuse. | Check power supply connections; Verify wiring against diagram; Check and replace fuse if necessary. |
| Safety outputs not activating (Output LED off) | Safety input open; Relay in fault state; Reset required. | Check all safety input devices; Clear any fault conditions; Perform a manual reset if configured. |
| Fault LED illuminated/flashing | Internal fault; Wiring error; External device fault. | Consult the detailed technical manual for specific fault codes; Verify all wiring; Check connected safety devices. |
| Unexpected de-energization of outputs | Safety input activated; Power interruption. | Inspect safety devices for activation; Check power supply stability. |
If the problem persists after following these steps, contact ABB technical support.
8. Specifications
The following are key technical specifications for the ABB RT6 24DC Safety Relay:
- Model: RT6
- Part Number: 2TLA010026R0000
- Product Dimensions: 1.77 x 4.72 x 3.31 inches
- Item Weight: 2.2 pounds
- Operation Mode: Automatic
- Coil Voltage: 24 Volts DC
- Contact Current Rating: 10 Amps
- Maximum Switching Voltage: 24 Volts
9. Warranty
The ABB RT6 24DC Safety Relay is covered by ABB's standard manufacturer's warranty. For detailed information regarding warranty terms, conditions, and duration, please refer to the official ABB website or contact your local ABB representative. Keep your purchase receipt as proof of purchase.
10. Support
For technical assistance, product inquiries, or service requests, please contact ABB customer support. You can find contact information, FAQs, and additional resources on the official ABB website: https://new.abb.com/contact-us
When contacting support, please have the product model (RT6) and part number (2TLA010026R0000) readily available.
