Safety Relays
Safety relays are crucial safety components in industrial automation and control systems, designed to safeguard personnel, equipment, and the production environment. Their core function is to monitor equipment operating status and immediately shut down hazardous sources when an anomaly is detected, complying with international safety standards such as ISO 13849-1 and IEC 62061.
1. What are the Core Features of Safety Relays?
Dual-channel Redundant Design
Employs two independent contact circuits with a cross-interlock mechanism for fault self-detection, ensuring safety functionality even in the event of a single point of failure.
Forced-guided Contact Structure
The mechanical structure prevents the normally open and normally closed contacts from closing simultaneously, preventing the risk of short circuits caused by accidental operation.
Fast Response Time
Typical disconnection time is ≤20ms, meeting the millisecond-level protection requirements of emergency braking and other scenarios.
2. What are the Typical Application Scenarios of Safety Relays?
Machinery emergency stop systems (e.g., stamping machines, injection molding machines).
Safety door interlocks (automated production lines).
Optical grating/laser scanner signal processing.
3. Key Selection Parameters of Safety Relays
Contact Rating: Typically 5A-10A/250VAC
Safety Level: SIL2/SIL3 or PLd/PLc
Certification Standards: UL508/EN 60204-1