The SR2C is a universally applicable safety relay designed for the rapid and secure shutdown of machinery and equipment in hazardous situations. Featuring two safe, redundant relay outputs, the device complies with the highest safety standards, including EN ISO 13849-1, EN IEC 62061, IEC 61508, and IEC 61511. It is ideal for emergency stop circuits, guard monitoring, and the safe control of safety components in single- or dual-channel operation. Integrated self-monitoring and an LED status indicator provide enhanced safety and user convenience.

Features:

• Safe relay outputs:
- 2 safe, redundant relay contacts for reliable shutdown

• Flexible connections:
- Emergency stop buttons
- Safety switches
- Non-contact safety switches
- Safety devices with OSSD outputs

• Operating modes:
- Single- or dual-channel operation available

• Safety features:
- Feedback circuit for monitoring downstream contactors or expansion modules
- Cyclical monitoring of output contacts
- LED status indicator for operational monitoring

• Start options:
- 2 configurable start behaviors

• Safety standards:
- Stop function up to PL e / SIL 3 in accordance with EN ISO 13849-1 / IEC 61508


Functionality:

• Operation:
When the emergency stop circuit is closed (e.g., safety door or emergency stop button), the SR2C allows the machine to operate. Upon triggering the safety function (e.g., opening the safety door), the device immediately opens its release current paths, safely shutting down the machine.

• Error detection:
The redundant use of force-guided relays and cyclical self-monitoring ensure that single faults do not impair the safety function and are detected promptly.


Mounting and Installation:

• Protection:
- Suitable for installation in control cabinets with at least IP54 protection in accordance with EN 60204-1

• Mounting:
- Mounts on a 35 mm DIN rail according to EN 60715 TH35

• Spacing:
- For AC 115 V / 230 V variants, maintain at least 10 mm distance from adjacent devices.
- Optional spacer (Part No. 472596 by ZANDER AACHEN) ensures defined spacing.

• Cooling:
- Ensure adequate heat dissipation within the control cabinet.


Safety Instructions:

• Installation and commissioning must only be performed by qualified personnel.
• All relevant standards and regulations must be adhered to.

Included Items:

• SR2C safety relay

Applications:

• Emergency stop circuits for machinery and equipment
• Guard monitoring
• Control of safety-relevant components
• Applications requiring the highest safety standards (PL e / SIL 3)