Pilz PMCprimo DriveP.01/AA0/4/0/0/208-480VAC - Manual (Page 51)

Function description
Operating Manual PMCprotego S1­2(­C)
1002528­EN­02 51
} The safety function SOS monitors the standstill position for a defined period, output
"SSA Safe Standstill Acknowledge"
} Venting the brake
} Output "SBA Safe Brake Acknowledge": "1" signal. Brake test successful
Timing diagram:
SS1 Activate
SS1 SIL3/Reset
Ready
SBT Activate
SBA Safe Brake
Acknowledge
STO Acknowledge
SSA Safe Standstill
Acknowledge
SBC+/SBC-
SBT delay time
Delay time
Ventilation
Delay time
Energisation
Monitoring
period
Fig.: Safety function SBT
} t
1
: Activation of safety function SBT, start of SBT delay time
} t
2
: Start of brake test, brake engages
} t
3
: Start of monitoring period, power is supplied to the motor
} t
4
: End of monitoring period
} t
5
: End of brake test
} SS1 Activate: Input for safety function SS1
} SS1 SIL3/Reset: Input for SIL 3 and reset