Pilz PMCprimo DriveP.01/AA0/4/0/0/208-480VAC - Manual (Page 46)

Function description
Operating Manual PMCprotego S1­2(­C)
1002528­EN­02 46
} Ready: Output for operating status of safety card and second output for feedback from
safety function STO
} STO Acknowledge: Output for feedback from safety function STO
} SRA Safe Range Acknowledge: Output for monitoring the limit value for the motor posi­
tion
4.3.10 Safe Brake Control ­ SBC
The safety function "Safe Brake Control" (SBC) is used to control holding brakes.
Features of the safety function:
} After executing safety functions STO and SS1, a mechanical brake is required to elim­
inate hazards, particularly where external forces influence the motor axis (e.g. suspen­
ded loads).
} An internal motor holding brake and an external holding can be controlled via the 2­pole
output "SBC+/SBC­" on the safety card.
} Safety function SBC is always activated in conjunction with safety function STO. This
prevents a hazardous movement of the drive axis in a torque­free state.
} The safety function SBC can be connected to the servo amplifier's brake signal (see
INFORMATION below). The state of this signal has a direct influence on outputs SBC+/
SBC­ of the safety card.
– "0" signal if the brake is engaged, DISABLE servo amplifier
– "1" signal if the brake is vented, ENABLE servo amplifier
Please note, however, that in the event of a fault, stopping the drive via the safety func­
tion SS1 (E­STOP braking ramp) and the resulting engagement of the brake (safety
function STO) has priority over the servo amplifier's brake signal.
Use of this function: Safe operation of a vertical axis with only one brake on the safety
card.
INFORMATION
The connection to the servo amplifier's brake signal is activated using the
"CSCNFG" command. Further information on the command can be found in
the servo amplifier's online help.
The function is available from firmware version 101 of the safety card and
version 5.70 of the servo amplifier.