Safe Operating Stop - Sos - Pilz PMCprotego S2-2 Operating Manual

Function description
Timing diagram:
Fig.: Safety function SS2
}
t : Activation of safety function SS2
1
}
t : Activation of safety function SOS
2
} SS1 Activate: Input for safety function SS1
}
Reset: Input for reset
} SS2 Activate: Input for safety function SS2
}
Ready: Output for operating status of safety card and second output for feedback from
safety function STO
}
STO Acknowledge: Output for feedback from safety function STO
}
SSA Safe Standstill Acknowledge: Output for feedback from limit value monitoring
4.3.4

Safe operating stop - SOS

The safety function "safe operating stop" (SOS) monitors the standstill position that has
been reached. An error will activate safety function SS1 (E-STOP braking ramp).
Features of the safety function:
}
The drive's control functions are maintained in the standstill position.
} Power to the motor is not shut down.
Operating Manual PMCprotego S2-2(-C)
1002529-EN-04
s, v
Tolerance window
Standstill position
Tolerance window
Braking ramp
Limit value
Standstill detection
1
SS1 Activate
0
1
Reset
0
1
SS2 Activate
0
1
Ready
0
1
STO Acknowledge
0
1
SSA Safe Standstill
Acknowledge
0
Braking ramp
s (t)
v (t)
t 1
SOS delay time
SOS
t 2
t
27