21 alarm code means: encoder abnormal.
< br >
occurrence reason
< br >
1. Encoder connector (CN2) falls off.
< br >
2. Encoder failure.
< br >
3. The encoder cable is faulty.
< br >
solution
< br >
1. Connect CN2 correctly.
< br >
2. Replace the servo motor.
< br >
3. Repair or replace the cable. More convenient operation, can easily play the best performance of the machine, servo system response faster, better stability; The built-in oscilloscope has three channels to accurately sample three different sets of data at the same time, making debugging and fault diagnosis more convenient and fast, in line with international standards.
It means coding exception
Cause analysis and investigation:
1. Check whether the encoder connector CN2 is connected properly. If not, connect it in the correct way
2, check whether the encoder cable is faulty (open or short circuit), repair or replace the cable
3. Check whether the encoder has any problems
< br >
4, if necessary, contact after-sales personnel for consultation and disposal
The fault code 21 is the communication interruption between the encoder and the driver, and activates the communication interruption detection function, in addition to the servo motor can be used in places that will be affected by water or oil droplets, but it should be noted that this machine is not fully waterproof or oil-proof.
Therefore, the servo motor should not be placed or used in an environment of water or oil invasion
Driver alarm 21 code is an encoder fault. Check the encoder connection between the motor and the driver is not a problem, such as the aviation plug is loose, there is no welding, the line is no problem, the problem is in the motor, it may be the driver, it is recommended to use the replacement method to judge.