Pilz PMCprimo DriveP.01/AA0/4/0/0/208-480VAC - Manual (Page 24)

Function description
Operating Manual PMCprotego S1­2(­C)
1002528­EN­02 24
} The safety function "STO" is always activated when both the inputs "SS1 Activate" and
"SS1 SIL3/Reset" are set to "0".
} The method by which the servo amplifier receives the command for controlled braking
of the motor is defined in the Configurator:
– Drive­activated: After the safety function is triggered, the safety card issues a com­
mand to the servo amplifier for controlled braking of the motor. The braking ramp is
configured in the Configurator.
– Controller­activated: After the safety function is triggered, the control system is­
sues a command to the servo amplifier for controlled braking of the motor. The
braking ramp must only be configured in the Configurator if monitoring of the brak­
ing ramp is also activate there.
Safety Card
Servo Amplifier
M
Input
v
t
Drive­activated braking ramp
Safety Card
Servo Amplifier
Controller
M
Input
v
t
Controller­activated braking ramp
Reaction
} Controlled braking of the drive, with the configured braking ramp.
} When the STO delay time has elapsed, the safety card activates the safety function
"safe torque off" (STO). The motor becomes torque­free.
} "STO Acknowledge" output: “1” Signal
If any external forces influence the motor axis (e.g. suspended loads), additional measures
(e.g. a safety holding brake) are required in order to eliminate hazards.