×
Siemens Industry Online Support
Siemens AG
Entry type: Application example Entry ID: 109747650, Entry date: 10/23/2017
(0)
Rate

Emergency stop shutdown to SIL 3 or PL e with contactors with F-PLC-IN and 3SK2 safety relay

  • Entry
  • Associated product(s)
Two-channel emergency stop shutdown of a motor by a 3SK2 safety relay and 3RT1 power contactors with fail-safe control.

Emergency stop shutdown to SIL 3 or PL e with contactors with F-PLC-IN and 3SK2 safety relay

Operating principle

The 3SK2 safety relay monitors the emergency stop device.

When the EMERGENCY STOP device is actuated, the safety relay opens the enabling circuits and switches the power contactors off in a safety-related way by means of their fail-safe inputs (F-PLC-IN).

If the emergency stop device is unlatched and the feedback circuit is closed, the Start button can be used to switch on again.

 Registrierung notwendig  Safety-ES_Emergency_stop_SIL3_3RT1_F-PLC-IN_3SK2.zip (1,8 KB)

 Registrierung notwendig  SET_Emergency_stop_SIL3_3RT1_F-PLC-IN_3SK2_en.zip (9,6 KB)

 Registrierung notwendig  Wiring_Emergency_stop_SIL3_3RT1_F-PLC-IN_3SK2.zip (78,0 KB)