Commissioning Manual
01/2017
117
Behaviors of the STO function
High level High level Safe The servo motor can normally run when you power on the servo
The servo drive starts up normally but the servo motor cannot run.
Alarm occurs and servo motor coasts down.
Alarm occurs and servo motor coasts down.
For more information about the STO function, see the SINUMERIK 808D/SINUMERIK 808D ADVANCED Function Manual.
Connecting the holding brake - X7 (feed drive only)
Holding brake (drive side)
Brake interfaces
B+: + 24 V, motor brake voltage positive
Phase B- B-: 0 V, motor brake voltage negative
Maximum cable cross-section: 1.5 mm
2
Input voltage tolerance: 24 V ± 10%
Holding brake (motor side)
Brake connector
2: B- Phase Brake -