OVERVIEW

Official designation: PILZ PNOZ S3 (PNOZsigma, Safety relay)

Role/Application: Monitors E-STOP pushbuttons and safety gates, providing a safe shutdown function through redundant circuitry and built-in self-monitoring.

KEY SPECS SUMMARY

Power: 24 V DC, 2.5 W power consumption

Interfaces / Ports: Plug-in screw or spring-loaded terminals

Indicators: Power, In1, In2, Out, Reset, Fault LEDs

Operating Temp: Minus 10 to 55 degrees C

Platform / Compatibility: E-STOP, safety gates, Cat. 4 / PL e

Limit: Max current 6 A for 24 V DC safety contacts

Lifecycle: Active product in the PNOZsigma range

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: How many safety contacts and semiconductor outputs does the PNOZ S3 have?

A: The unit features 2 instantaneous Normally Open safety contacts and 1 semiconductor output.

Wiring & Installation:

Q: What are the primary dimensions and net weight of the safety relay module?

A: The dimensions are 98 mm high, 17.5 mm wide, 120 mm deep, with a net weight of 140 g.

Troubleshooting & Compatibility:

Q: What are the maximum cable resistance limits for dual-channel operation?

A: Maximum overall cable resistance is 30 Ohm for dual-channel wiring with short detection.

Replacement & Upgrades:

Q: Can the PNOZ S3 be expanded with additional safety contacts in the same system?

A: Yes, one PNOZsigma contact expansion module can be connected using a dedicated connector.