Specified In The Configurator - Pilz PMCprotego S1 Operating Manual

4 Function Description
4.3 Safety functions
Sicherheitsfunktion_Sxx_Ueberwach
Sicherheitsfunktion_SS2_SOS_Ueberwach_Stillstand_Pos
Sicherheitsfunktion_SOS_Ueberwach_Stillstand_Auto
Sicherheitsfunktion_Sxx_Voraussetzung_S1
Sicherheitsfunktion_SOS_Voraussetzung
Sicherheitsfunktion_Sxx_Voraussetzung_SIL3
Sicherheitsfunktion_SOS_Ausloesung
Sicherheitsfunktion_SOS_Reaktion
Sicherheitsfunktion_SOS_S1_Diagramm
4-18
Features of the safety function:
The drive's control functions are maintained in the standstill position.

Power to the motor is not shut down.

The safety card monitors the following functions:
Standstill position

– The safety function monitors whether the standstill position re-
mains within a configured tolerance window.
– Safety function SS1 (E-STOP braking ramp) is activated if the
standstill position leaves the tolerance window.
Automatic SOS at standstill

A standstill threshold for activating the safety function SOS can be

specified in the Configurator.

Safety function SOS is activated when
– standstill is achieved while the SOS delay time is running.
– the SOS delay time has elapsed.
Prerequisites for normal operation:
Input "SS1 Activate" and "SS1 SIL3/Reset": "1" Signal (+24 VDC)

"Ready" output: "1" Signal (+24 VDC). The safety card is ready for op-

eration.
"STO Acknowledge" output: "0" Signal

Input "SOS Activate": "1" Signal (+24 VDC)

To achieve SIL3 or Ple: Connect the output "STO SIL3" to servo am-

plifier terminal X4A/ 3.
Safety function is activated
By a 1/0 pulse edge at the input "SOS Activate".

Reaction:
SOS delay time starts

Once the SOS delay time has elapsed, safe standstill is monitored.

The drive remains in a controlled standstill.
Output "SOS Acknowledge": "1" Signal

Safety function SS1 (E-STOP braking ramp) shuts the drive down

safely if the limit value for the standstill position is exceeded. An error
is registered.