Schmersal – FWS 1205 C (Art. No. 101170056) – Fail-Safe Standstill Monitor

Main Features

• Function: Dual-channel standstill monitor (fail-safe) that detects machine stoppage via 2 impulse sensors  

• Safety Contacts:

   

  • 2 safety output contacts (positive-guided) for enabling safety circuits

  • 2 semiconductor signaling outputs (status/fault indicators)  

   

• Power Supply: 24 V DC

• Reset & Diagnostics:

   

  • Automatic reset supported

  • Internal diagnostics for wire-break detection, sensor failure, relay malfunction, and ground-fault monitoring  

   

• Standards & Approvals: IEC 62061, ISO 13849‑1; cULus listed; robust safety compliance  

• Inputs: Supports two PNP-type impulse sensors; X1/X2 thresholds approx. 1 Hz for “C” variant  

• Housing & Mounting:

   

  • 22.5 × 75 × 110 mm ventilated glass-fiber reinforced thermoplastic

  • DIN-rail mount (EN 60715); IP20 protection

  • Operating temperature range: –25 °C to +60 °C