Analysis of the cause of servo motor failure (4)
6. After the power is turned on, the motor can't roll, but there is no abnormal noise, no smell or smoke.
1. Cause of failure
1 power is not connected (at least two phases are not available);
2 fuse is blown (at least two phases are blown);
3 overcurrent relay is adjusted too small;
4 control equipment wiring fault.
2. Troubleshooting
1 Check the power circuit switch, whether there is a breakpoint at the fuse and junction box, and correct it;
2 Check the fuse type, the cause of the fuse, and replace the fuse;
3 conditioning relay setting value and motor cooperation;
4 Correct the wiring.
Seven, the motor oscillation is larger during operation
1. Cause of failure
1 because the wear bearing clearance is too large;
2 air gap is not uniform;
3 rotor imbalance;
4 shaft twists and turns;
5 Coupling (pulley) coaxiality is too low.
2. Troubleshooting
1 overhaul the bearing and replace if necessary;
2 adjust the air gap to make it uniform;
3 proofreading rotor dynamic balance;
4 straight shafts;
5 Proofreading from the beginning to make it conform to the rules.
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