OVERVIEW

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

Role/Application: Monitors E-STOP pushbuttons and safety gates, ensuring a safe shutdown function. It is a standalone unit for dual-channel or single-channel safety circuits up to PL e or SIL CL 3.

KEY SPECS SUMMARY

Power: 24 V DC, 2.5 W power consumption

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

Indicators: 6 LEDs for Power, Input 1, Input 2, Output, Reset, Fault

Operating Temp: Minus 10 to 55 degrees C

Platform / Compatibility: E-STOP, Safety Gate, Light Grid, Cat. 4 / PL e / SIL CL 3

Limit: Max current 6 A for 24 V DC / 240 V AC safety contacts

Lifecycle: Active product in the PNOZsigma range

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What are the output contact configuration and maximum switching capacity?

A: The output configuration is 2 N/O instantaneous safety contacts and 1 semiconductor output, rated 6 A at 24 V DC and 240 V AC.

Wiring & Installation:

Q: What are the primary dimensions and terminal options for the PNOZ S3?

A: The unit dimensions are 98 mm high, 17.5 mm wide, 120 mm deep, with plug-in screw or spring-loaded terminals.

Troubleshooting & Compatibility:

Q: What is the maximum acceptable overall cable resistance for dual-channel wiring with short detection?

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

Replacement & Upgrades:

Q: Can the PNOZ S3 safety relay be expanded to include more safety contacts?

A: Yes, one PNOZsigma contact expansion module can be connected using the dedicated connector on the side of the unit.