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ABB rt7a 1.5s 24dc abb safety relay
ABB RT7A 2TLA010028R2000 is a 24 V DC universal safety relay with two instantaneous NO outputs, two 1.5 s delayed NO outputs and one NC auxiliary output for machinery safety applications.
Why Choose the ABB RT7A 1.5s 24DC Safety Relay?
The ABB RT7A 2TLA010028R2000 is a universal 24 V DC safety relay with delayed safety outputs from the ABB Jokab Safety RT Series. Designed for machinery safety applications, it combines immediate and time-delayed relay outputs in a single DIN rail module, making it particularly useful where hazardous movement must be brought to a controlled stop before power is fully removed.
The RT7A provides an output configuration of 2 NO instantaneous safety outputs, 2 NO delayed safety outputs and 1 NC auxiliary output. The two delayed outputs have a 1.5 s off-delay, allowing the relay to support applications requiring a controlled stopping sequence while maintaining safety-related monitoring.
Operating from a 24 V DC supply, the ABB RT7A supports both single-channel and dual-channel safety arrangements and can be used with compatible emergency stops, guard interlocks, light curtains, safety mats and other machine-safety devices. Its compact 45 mm wide housing is designed for standard DIN rail installation in industrial control panels.
Key Advantages
- Universal machinery safety relay suitable for several safety applications.
- Provides 2 instantaneous NO and 2 delayed NO safety outputs.
- 1.5 s delayed outputs support controlled stopping sequences.
- 24 V DC supply integrates with common industrial control systems.
- Supports single-channel and dual-channel safety monitoring.
- Compact 45 mm DIN rail format simplifies control-panel integration.
Key Features
- ABB Jokab Safety RT7A safety relay.
- 24 V DC control supply.
- 2 NO instantaneous safety outputs.
- 2 NO delayed safety outputs.
- 1 NC auxiliary output.
- 1.5 s delayed output timing.
- Single-channel and dual-channel input capability.
- Suitable for a broad range of machine-safety devices.
- External device monitoring capability for appropriate safety circuits.
- DIN rail mounting.
- Screw-terminal connections.
- IP20 protection rating.
Reliable Delayed Control for Machinery Safety Systems
Some machinery cannot be stopped safely by immediately removing all power. Applications involving rotating equipment, drives or other moving mechanisms may require a controlled stop before the final safety outputs are opened. The ABB RT7A addresses this requirement by combining instantaneous safety contacts with two safety outputs incorporating a fixed 1.5 s off-delay.
The RT7A can be integrated with compatible emergency-stop devices, interlocking guards, light curtains, light beams, safety mats, contact strips and enabling devices. Its combination of immediate and delayed outputs allows machine designers to implement safety circuits where different parts of the stopping sequence need to operate at different times.
Typical Applications
- Emergency-stop safety circuits.
- Guard door and gate interlocking systems.
- Safety light curtains and light beams.
- Safety mats and pressure-sensitive edges.
- Machinery requiring delayed safety outputs.
- Controlled machine stopping sequences.
- Industrial automation and production machinery.
- Safety output and contactor control circuits.
Technical Specifications
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| SIL (up to) | SIL 3 | |
|---|---|---|
| Timing Function | None (instantaneous) | |
| Auxiliary Contacts | 1 NC | |
| Current | 7 A | |
| Coil / Supply Voltage | 24 V DC | |
| IP Rating | IP20 | |
| Manufacturer | ABB | |
| Product range | ABB Jokab Safety | |
| Series | RT7A | |
| Model | RT7A 1.5s 24DC | |
| Manufacturer part number | 2TLA010028R2000 | |
| Product type | Safety relay | |
| Supply voltage | 24 V DC | |
| Supply tolerance | +15 / -20% | |
| Instantaneous safety outputs | 2 NO | |
| Delayed safety outputs | 2 NO | |
| Auxiliary output | 1 NC | |
| Delayed output time | 1.5 s | |
| Input configuration | Single-channel / dual-channel | |
| Safety Category | Category 4 | |
| Performance Level | PL e | |
| SIL | SIL 3 | |
| Mounting | DIN rail | |
| Electrical connection | Screw terminals | |
| Width | 45 mm | |
| Height | 84 mm | |
| Depth | 120 mm | |
| Operating temperature | -10 to +55 °C | |
| Protection rating | IP20 | |
| Net weight | 405 g | |
| Barcode | 7350024431902 |
Frequently Asked Questions
What is the ABB RT7A 2TLA010028R2000 used for?
The ABB RT7A is a universal machinery safety relay providing both instantaneous and delayed safety outputs. It is suitable for applications including emergency stops, safety interlocks, light curtains, safety mats and systems requiring a controlled delayed stop.
What supply voltage does the ABB RT7A 2TLA010028R2000 require?
This version of the ABB RT7A operates from a 24 V DC supply. ABB identifies the exact variant as RT7A 1.5s 24DC.
What outputs does the ABB RT7A provide?
The RT7A provides 2 normally open instantaneous safety outputs, 2 normally open delayed safety outputs and 1 normally closed auxiliary output.
What is the delay time of the ABB RT7A 2TLA010028R2000?
The two delayed normally open outputs have a 1.5 s off-delay, allowing them to remain active briefly after the instantaneous safety outputs have changed state.
How is the ABB RT7A safety relay installed?
The RT7A is designed for DIN rail mounting inside a suitable electrical control enclosure. It uses screw terminals and has a compact housing approximately 45 mm wide.
Trusted for Industrial Machine Safety
ABB Jokab Safety RT Series relays provide established machinery safety functionality for industrial automation systems, with the RT7A combining universal safety monitoring and delayed safety outputs for applications requiring controlled stopping sequences.
