Safety Relays with Diagnostic Capabilities
Control and diagnose issues with safety-critical circuits. These relays have a microprocessor that monitors safety components, such as emergency stops and light curtains, and sends a signal to stop the operation if a failure is detected and restart when the issue is resolved. They also help with diagnostic tasks because of their feedback circuit, which allows basic relays to communicate their status back to the safety relay. These relays have a duplicate set of input and output signals, so they’ll still stop the controlled device if one of the inputs fails.
IP20 rated, they have recessed terminals which prevent fingers and other objects from touching live circuits. These relays have been tested to multiple safety standards and can help achieve PL, SIL, or CAT system ratings. They also meet ISO and IEC standards for machine safety.
Mount them to 35 mm DIN rail (also known as DIN 3 Rail) for fast installation.
Relays and auxiliary contact blocks with delayed safety outputs are often used where power must be maintained after an input signal is received. For example, after a stop button for a machine is pressed, the guard door will stay locked until the machine cycle is finished.
Auxiliary contact blocks (sold separately) allow you to control more components, such as signaling devices or basic relays.
For technical drawings and 3-D models, click on a part number.
| Number of Terminals | Input Voltage | Switching Current @ Voltage | Max. Switching Voltage | Ht. | Wd. | Dp. | For Use With | Max. System Safety Rating | Features | Each | |
2 Circuits Controlled | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
2 Safety Outputs with 2 Off (Normally Open) and 2 Delayed Safety Outputs with 2 Off (Normally Open) | |||||||||||
| 16 | 24V DC | 3 A @ 240 V AC 3 A @ 24 V DC | 250V AC 250V DC | 3.9" | 0.9" | 4.5" | Emergency Stops, Light Curtains | PLe, SIL3 | Time Delay | 0000000 | 0000000 |
2 Safety Outputs with 2 Off (Normally Open) and 1 Signal Output with 2 On (Normally Closed) | |||||||||||
| 16 | 24V AC, 24V DC | 5 A @ 240 V AC 5 A @ 24 V DC | 250V AC 250V DC | 3.9" | 0.9" | 4.5" | Emergency Stops | PLe, SIL3 | __ | 0000000 | 000000 |
| 16 | 24V AC, 24V DC | 5 A @ 240 V AC 5 A @ 24 V DC | 250V AC 250V DC | 3.9" | 0.9" | 4.5" | Two-Hand Switches | PLe, SIL3 | __ | 0000000 | 000000 |
3 Safety Outputs with 2 Off (Normally Open) and 1 Signal Output with 2 On (Normally Closed) | |||||||||||
| 16 | 240V AC | 3 A @ 240 V AC 2.5 A @ 24 V DC | 250V AC 250V DC | 3.9" | 1.8" | 4.5" | Emergency Stops | PLe, SIL3 | __ | 0000000 | 000000 |
| 24 | 24V AC, 48V AC, 120V AC, 240V AC, 24V DC, 48V DC, 60V DC, 120V DC, 240V DC | 5 A @ 240 V AC 5 A @ 24 V DC | 250V AC 250V DC | 4.42" | 0.9" | 4.5" | Emergency Stops | PLe, SIL3 | __ | 0000000 | 00000000 |
3 Circuits Controlled | |||||||||||
3 Safety Outputs with 2 Off (Normally Open) and 1 Signal Output with 2 On (Normally Closed) | |||||||||||
| 16 | 24V AC, 24V DC | 5 A @ 240 V AC 5 A @ 24 V DC | 250V AC 250V DC | 3.9" | 0.9" | 4.5" | Emergency Stops | PLe, SIL3 | __ | 0000000 | 000000 |
| Number of Terminals | Input Voltage  | Switching Current @ Voltage | Max. Switching Voltage | Ht. | Wd. | Dp. | Features | Each | |
5 Safety Outputs | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 16 | 24V AC, 24V DC | 2.5 A @ 24 V DC 3 A @ 240 V AC | 250V AC, 250V DC | 3.9" | 0.9" | 4.5" | __ | 0000000 | 0000000 |
4 Delayed Safety Outputs | |||||||||
| 16 | 24V DC | 3 A @ 240 V AC 3 A @ 24 V DC | 250V AC, 250V DC | 3.9" | 0.9" | 4.5" | Time Delay | 0000000 | 000000 |