Troubleshooting High-speed lifter
Lift Master three-phase motor specification
If a malfunction occurs, the causes and solutions are shown in the table below. Please shut off the power before inspecting.
| 1 | Doesn't work |
|---|---|
| 2 | Works in reverse |
| 3 | Operation is unstable |
| 4 | slip down |
| 5 | Poor stopping accuracy |
| 6 | Abnormal noise and vibration occur |
Lift Master servo motor specification
If a malfunction occurs, the causes and solutions are shown in the table below. Please shut off the power before inspecting.
*For servo motor drive types, please also refer to the motor manufacturer's Instruction Manuals.
| 7 | Doesn't work |
|---|---|
| 8 | Operation is unstable |
| 9 | Misalignment |
| 10 | Abnormal noise and vibration occur |
Lift Master three-phase motor specification
| 1 | Doesn't work |
|---|
| Cause 1 | No power | Inspection method | Check the power supply voltage | Solution | Connect the power circuit correctly |
|---|---|---|---|---|---|
| Cause 2 | Poor connection of motor terminal block screws | Inspection method | Check for loose screws and disconnections | Solution | Ensure a secure connection |
| 2 | Works in reverse |
|---|
| Cause 1 | The phase sequence of the power lines (U, V, W) is different | Inspection method | Check the phase sequence of the power lines (U, V, W). | Solution | Swap two of the power lines (U, V, W) |
|---|
| 3 | Operation is unstable |
|---|
| Cause 1 | Overload, brake release | Inspection method | Check the connection status of power lines (U, V, W phases) | Solution | Fix any loose terminals |
|---|
| 4 | slip down |
|---|
| Cause 1 | Brake malfunction | Inspection method | Check for brake operation noise | Solution | Please contact us |
|---|---|---|---|---|---|
| Inspection method | Check for loose screws and disconnections | Solution | Ensure a secure connection |
| 5 | Poor stopping accuracy |
|---|
| Cause 1 | Brake lining wear | Inspection method | Brake gap inspection | Solution | Adjust the brake gap |
|---|
| 6 | Abnormal noise and vibration occur |
|---|
| Cause 1 | Loose bolts for fixing the main body | Inspection method | Check the installation status and check for loose bolts | Solution | Install correctly and tighten the fixing bolts securely. |
|---|---|---|---|---|---|
| Cause 2 | Power supply Open phase | Inspection method | Measurement of power supply voltage (U, V, W) | Solution | Connect the power supply successfully |
Lift Master servo motor specification
| 7 | Doesn't work |
|---|
| Cause 1 | No power | Inspection method | Check the power supply voltage | Solution | Connect the power circuit correctly |
|---|---|---|---|---|---|
| Cause 2 | Overloaded | Inspection method | Test run without load | Solution | Reduce the load or change the motor capacity. |
| Cause 3 | The servo amplifier and motor are not connected. | Inspection method | Check the connection of the power lines (U, V, W phases) | Solution | Set it up correctly |
| Cause 4 | No speed/position command is input | Inspection method | Check the input signal | Solution | Enter the correct speed/position command |
| Cause 5 | The servo-on signal remains off. | Inspection method | Check the servo-on signal | Solution | Turn on the servo-on signal |
| Cause 6 | Command pulse mode selection is incorrect | Inspection method | Check the command pulse format | Solution | Set it up correctly |
| Cause 7 | Forward drive inhibit and reverse drive inhibit input signals remain off. | Inspection method | Check the input signal | Solution | Turn on the input signal |
| Cause 8 | Servo amplifier failure | Inspection method | Inspection of the internal circuit board | Solution | Replace the servo amplifier |
| 8 | Operation is unstable |
|---|
| Cause 1 | Poor wiring connection | Inspection method | Check the connection status of the power lines (U, V, W phases) and signal line connectors | Solution | Fix loose terminals and connectors |
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| 9 | Misalignment |
|---|
| Cause 1 | Increased backlash in the reducer | Inspection method | Check for position deviation during positioning to the home position or a specified position | Solution | Overhaul required Contact us |
|---|---|---|---|---|---|
| Cause 2 | Servo motor or servo amplifier failure | Inspection method | Checking the operation of the motor alone (Positioning) Check the amount of rotation |
Solution | Replace the servo motor and servo amplifier. |
| 10 | Abnormal noise and vibration occur |
|---|
| Cause 1 | Loose bolts for fixing the main body | Inspection method | Check the installation status and check for loose bolts | Solution | Install correctly and tighten the fixing bolts securely. |
|---|---|---|---|---|---|
| Cause 2 | Servo gain adjustment is insufficient | Inspection method | Check the servo gain | Solution | Adjusting the servo gain |
