Pilz PMCprimo DriveP.01/AA0/4/0/0/208-480VAC - Manual (Page 28)

4.3 Safety functions
4 Function Description
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]
4-10
Reaction:
 The drive is switched to 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_STO_Diagramm_S1
Timing diagram:
Fig. 4-2: Safety function STO
Sicherheitsfunktion_STO_Diagramm_S1_S1-2_Legende  t
1
: Safety function STO switched directly due to a "0" signal from
– SS1 Activate: Input for safety function SS1
– SS1 SIL3/Reset: Input for SIL 3 and reset
 Ready: Output for operating status of the safety card
 STO Acknowledge: Output for feedback from safety function STO
4.3.2 Safe stop 1 - SS1
Safe stop 1 - SS1 4- Sicherheitsfunktion_SS1_Ueber
The safety function "safe stop 1" (SS1) brakes the motor to standstill in
a controlled manner and removes the power to the motor. After a de-
fined period (STO delay time) or once the motor is at standstill, the safety
function "safe torque off" (STO) removes the power to the motor.
v
t t1
1
0
STO Acknowledge
STO
SS1 Activate
1
0
SS1 SIL3/Reset
1
0
Ready
1
0