Siemens SINUMERIK 840D sl Function Manual page 720

Diagnostics
11.3 Safety messages for SINAMICS S120
C01701 SI Motion P1 (CU): STOP B initiated
Explanation The drive is stopped using STOP B (braking along the OFF3 down ramp). As a result of this fault, after the
time parameterized in p9556 has expired or the speed threshold parameterized in p9560 has been fallen
below, message C01700 "STOP A initiated" is output.
Possible causes
Stop request from the second monitoring channel.
Subsequent response of message C01714 "SI Motion: Safely-Limited Speed exceeded".
Subsequent response of message C01711 "SI Motion: Defect in a monitoring channel".
Subsequent response of message C01707 "SI Motion CU: Tolerance for Safe Operating Stop exceeded".
Subsequent response of message C01716 "SI Motion CU: Tolerance for safe direction of motion exceeded".
Remedy Remove the cause of the fault on the control and carry out a power on.
Carry out diagnostics for active message C01714.
Carry out diagnostics for active message C01711.
Carry out diagnostics for message C01707.
Carry out diagnostics for message C01715.
Carry out diagnostics for message C01716.
This message can only be acknowledged as follows in the acceptance test mode without POWER ON:
Motion monitoring functions with SINUMERIK: From the machine control panel, in the acceptance test mode
only.
C01706 SI Motion P1 (CU): SAM/SBR limit exceeded
Response NONE
Acknowledg‐ IMMEDIATELY (POWER ON)
ment
Explanation Motion monitoring functions with encoder (p9506 = 0) - or without encoder with set acceleration monitoring
(SAM, p9506 = 3):
● After the initiation of STOP B (SS1) or STOP C (SS2), the speed has exceeded the selected tolerance
value.
Motion monitoring functions without encoder with set brake ramp monitoring (SBR, p9506 = 1):
● After the initiation of STOP B (SS1) or SLS switchover to the lower velocity stage, the speed has exceeded
the selected tolerance.
The drive is stopped by the message C01700 "STOP A initiated".
Remedy Check the braking behavior and if required, adapt the parameterization of the "SAM" or "SBR" function.
This message can be acknowledged as follows without a POWER ON:
Motion monitoring functions with SINUMERIK: From the machine control panel, in the acceptance test mode
only.
C01707 SI Motion P1 (CU): Tolerance for Safe Operating Stop exceeded
Response NONE
Acknowledg‐ IMMEDIATELY (POWER ON)
ment
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Function Manual, 12/2017, 6FC5397-4BP40-6BA1
Safety Integrated