Name | Description | ALM | WRN | SRV ON | Clear Way |
---|---|---|---|---|---|
AL.007 Overspeed |
The control speed of the motor exceeds the normal speed | ⊗ | NO | DI.ARST |
Delta servo Alarms
Alarms & trouble shooting of delta servo
Troubleshooting summary of Delta A2 servo

This article provides the troubleshooting methods for Delta servo. The content comes from two sources : (1) The manual from Delta’s official website. (2) The collection of experience provided by authors and readers on this site ! Under construction …
AL.186 CAN Bus off Error – Delta servo troubleshooting
Name | Description | ALM | WRN | SRV ON | Clear Way |
---|---|---|---|---|---|
AL.186 CAN Bus off |
CAN data transmission error | ⊗ | Yes | NMT:Reset node/
0x6040.Fault Reset |
AL.185 CAN Bus hardware Error – Delta servo troubleshooting
Name | Description | ALM | WRN | SRV ON | Clear Way |
---|---|---|---|---|---|
AL.185 CAN Bus H/W Error |
The communication of CAN Bus is breakdown or Error Rx/Tx Counter is over 128 | ⊗ | No | NMT:Reset node/
0x6040.Fault Reset |
AL.180 Heartbeat or NodeGuarding error – Delta servo troubleshooting
Name | Description | ALM | WRN | SRV ON | Clear Way |
---|---|---|---|---|---|
AL.180 Heartbeat or |
Heartbeat or NodeGuarding error |
⊗ | No | NMT:Reset node/
0x6040.Fault Reset |
AL.170 Heartbeat or NodeGuarding warn – Delta servo troubleshooting
Name | Description | ALM | WRN | SRV ON | Clear Way |
---|---|---|---|---|---|
AL.170 Heartbeat or |
Heartbeat or NodeGuarding error |
⊗ | Yes | NMT:Reset node/
0x6040.Fault Reset |
AL.011 Encoder Error – Delta servo troubleshooting
Name | Description | ALM | WRN | SRV ON | Clear Way |
---|---|---|---|---|---|
AL.011 Encoder Error |
The encoder produces abnormal pulse | ⊗ | No | re-power on |
AL.303/3E3 CANopen SYNC time-out – Delta servo troubleshooting
Name | Description | ALM | WRN | SRV ON | Clear Way |
---|---|---|---|---|---|
AL.303/3E3 SYNC Time-out |
The synchronized signal, SYNC of CANopen has not been received in time | 3E3
⊗ |
303
⊗ |
303:Yes
3E3:No |
NMT: Reset node/
0x6040.Fault Reset |
AL.301/3E1 CANopen SYNC fail – Delta servo troubleshooting
Name | Description | ALM | WRN | SRV ON | Clear Way |
---|---|---|---|---|---|
AL.301/3E1 CANopen SYNC fail |
CANopen IP mode fails to synchronize with the controller. | 3E1
⊗ |
301
⊗ |
301:Yes
3E1:No |
NMT: Reset node/
0x6040.Fault Reset |
AL.009 Position Error out of range – Delta servo troubleshooting
Name | Description | ALM | WRN | SRV ON | Clear Way |
---|---|---|---|---|---|
AL.009 |
Position error exceeds P2-35 | ⊗ | NO | DI.ARST |