A safety relay is designed to connect safety devices, such as interlock switches, to the machine control circuit. It provides a switching action from the safety interlock switch, and can act as an intermediate relay to distribute a signal to multiple devices. This dual channel emergency stop safety relay compares input and output signals, and provides failure to a safe condition if there is a failure in the interlocking interface control circuit.
Dual Channel Emergency Stop – Typical Applications
- Interlocked guards, light curtains, laser scanners, safety mats
- Machine input/output signals
Without a safety relay, faults and short circuits in a safety interlock switch can go undetected and can create a hazardous situation. The potential for faults exists in the power supply, relays, and switches as well as their associated wiring.
When using this dual channel emergency stop safety relay, the wiring is monitored and compared. If a failure occurs in one area, it will be detected and a stop signal will be sent to the safeguarded machine.