The SRTC time-delayed safety extension module is designed for use with a base device from the ZANDER SR series, such as SR2C or SR3C. It enables delayed shutdowns of machine components, ideal for applications where machinery must be returned to a safe starting position before stopping the drive. As part of a modular system, the SRTC can be combined with non-delayed extension modules (SREC) to create flexible safety solutions with variable shutdown times and safety contacts.

Features:

• Safe relay contacts:
- 3 safe, redundant, time-delayed relay outputs
- 1 auxiliary contact for fault monitoring

• Modular design:
- Compatible with ZANDER SR series base devices and SREC modules
- Flexible configuration of safety systems

• Time delay:
- Continuously adjustable from 1 to 30 seconds

• Safety standard:
- Complies with STOP Category 1 according to EN ISO 13850
- Suitable for applications up to Category 3, PL d according to EN ISO 13849-1

• Monitoring functions:
- Fault monitoring by the base device

• Status display:
- LED indicates the switching state


Functionality:

• System activation:
- The base device supplies DC 24V control voltage to terminals S15 and S16 of the SRTC via a safety contact.
- When the base device is activated, the SRTC safety contacts switch on.

• Time-delayed shutdown:
- When an emergency stop button is pressed, the base device interrupts the control voltage. The SRTC safety contacts open after the set delay time. The supply voltage must remain present during the delay.


Mounting and Installation:

• Protection:
- Must be installed 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 and cooling:
- Maintain at least 10 mm distance from adjacent devices for AC 115 V / 230 V variants
- Ensure adequate heat dissipation within the control cabinet
- Optional spacer (Part No. 472596 by ZANDER AACHEN) available


Safety Instructions:

• Installation and commissioning must only be performed by qualified personnel.
• Adherence to all relevant standards and regulations is required.

Included Items:

• SRTC time-delayed safety module

Applications:

• Delayed shutdown of machinery and equipment according to STOP Category 1
• Combination with non-delayed SREC extension modules
• Flexible and modular safety solutions in industrial applications
• Systems with safety requirements up to Category 3, PL d