Pilz PMCprotego S1 Operating Manual page 51

4 Function Description
4.3 Safety functions
Timing diagram
v, I M
I M (t)
SBT delay time
1
SS1 Activate
0
1
SS1 SIL3/Reset
0
1
Ready
0
1
SBT Activate
0
1
SBT Acknowledge
0
1
STO Acknowledge
0
1
SOS Acknowledge
0
1
SBC+/SBC-
0
Fig. 4-14: Safety function SBT
t : Activation of safety function SBT, start of SBT delay time

1
t : Start of brake test, brake engages

2
t : Start of monitoring period, power is supplied to the motor

3
t : End of monitoring period

4
t : End of brake test

5
SS1 Activate: Input for safety function SS1

SS1 SIL3/Reset: Input for SIL3 and reset

Ready: Output for operating status of the safety card

SBT Activate: Input for safety function SBT

SBT Acknowledge: Output for feedback from safety function SBT

STO Acknowledge: Output for feedback from safety function STO

SBT
v(t)
t 1 t 2 t 3
Monitoring
period
Delay time
Energisation
t
t 4 t 5
Delay time
Ventilation
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