Operating Instructions

4 Faults and alarms
4.2 List of faults and alarms
SINAMICS G120 CU230P-2 Control Units
718 List Manual (LH9), 04/2014, A5E33838102B AA
The CAN controller must be manually restarted with p8608 = 1 after the cause of the fault has been resolved!
See also: p8608 (CAN Clear Bus Off Error), p8622 (CAN bit rate), p8623 (CAN Bit Timing selection)
F08701 CAN: NMT state change
Message class: Communication error to the higher-level control system (9)
Reaction: OFF3
Acknowledge: IMMEDIATELY
Cause: A CANopen NMT state transition from "operational" to "pre-operational" or after "stopped".
Fault value (r0949, interpret decimal):
1: CANopen NMT state transition from "operational" to "pre-operational".
2: CANopen NMT state transition from "operational" to "stopped".
Note:
In the NMT state "pre-operational", process data cannot be transferred and in the NMT state "stopped", no process
data and no service data can be transferred.
Remedy: Not necessary.
Acknowledge the fault and continue operation.
F08702 (A) CAN: RPDO Timeout
Message class: Communication error to the higher-level control system (9)
Reaction: OFF3 (NONE, OFF1, OFF2)
Acknowledge: IMMEDIATELY
Cause: The monitoring time of the CANopen RPDO telegram has expired because the bus connection was either interrupted
or the CANopen Master was switched-off.
See also: p8699 (CAN: RPDO monitoring time)
Remedy: - check the bus cable
- check the master.
- If required, increase the monitoring time (p8699).
A08751 (N) CAN: Telegram loss
Message class: Communication error to the higher-level control system (9)
Reaction: NONE
Acknowledge: NONE
Cause: The CAN controller has lost a receive message (telegram).
Remedy: Reduce the cycle times of the receive messages.
A08752 CAN: Error counter for error passive exceeded
Message class: Communication error to the higher-level control system (9)
Reaction: NONE
Acknowledge: NONE
Cause: The error counter for the send or receive telegrams has exceeded the value 127.
Remedy: - check the bus cable
- set a higher baud rate (p8622).
- check the bit timing and if required optimize (p8623).
See also: p8622 (CAN bit rate), p8623 (CAN Bit Timing selection)
A08753 CAN: Message buffer overflow
Message class: Communication error to the higher-level control system (9)
Reaction: NONE
Acknowledge: NONE
Cause: A message buffer overflow.
Alarm value (r2124, interpret decimal):
1: Non-cyclic send buffer (SDO response buffer) overflow.
2: Non-cyclic receive buffer (SDO receive buffer) overflow.
3: Cyclic send buffer (PDO send buffer) overflow.