Pilz PMCprimo DriveP.01/AA0/4/0/0/208-480VAC - Manual (Page 35)

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]
4-17
4.3 Safety functions
4 Function Description
Timing diagram
Fig. 4-4: Safety function SS2
 t
1
: Activation of safety function SS2
 t
2
: Activation of safety function SOS
 SS1 Activate: Input for safety function SS1
 SS1 SIL3/Reset: Input for SIL3 and reset
 Ready: Output for operating status of the safety card
 STO Acknowledge: Output for feedback from safety function STO
 SOS Acknowledge: Output for feedback from safety function SOS
4.3.4 Safe operating stop - SOS
Safe operating stop - SOS 4- Sicherheitsfunktion_SOS_Ueber
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).
Braking ramp
s, v
t t1
SS1 SIL3/Reset
1
0
1
0
SOS delay time
Tolerance window
Braking ramp
Limit value
Standstill detection
v (t)
s (t)
Tolerance window
Standstill position
1
0
1
0
1
0
SS1 Activate
Ready
STO Acknowledge
SOS Acknowledge
SOS
t2
1
0
SS2 Activate