Pilz PMCprimo DriveP.01/AA0/4/0/0/208-480VAC - Manual (Page 31)

Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: [email protected]
4-13
4.3 Safety functions
4 Function Description
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 torque-
free.
 "STO Acknowledge" output: “1” Signal
Sicherheitsfunktion_haengende_Lasten
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.
Sicherheitsfunktion_SS1_S1_Diagramm
Timing diagram: STO is started once the STO delay time has elapsed
Braking ramp
v
t t1
SS1 Activate
1
0
STO Acknowledge
1
0
STO delay time
Tolerance window
Braking ramp
Limit value
Standstill detection
SS1 SIL3/Reset
1
0
STO
Ready
1
0
t2