Troubleshooting High-speed lifters
Zip Master
The table below shows the cause and solution to be taken when a trouble occurs. Switch off the power before checking.
※For servo motor drive types, see also the motor manufacturer's instruction manual.
1 | Does not operate |
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2 | Operates in reverse |
3 | Operation is unstable |
4 | Slip down |
5 | Poor stopping accuracy |
6 | Abnormal noise/vibration occurs |

Zip Master
1 | Does not operate |
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Cause 1 | Power is not switched on | Inspection method | Check power supply voltage | Solution | Connect power supply circuit correctly |
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Cause 2 | Poor connection of motor terminal block screws | Inspection method | Check for loose or unconnected screws | Solution | Connect securely |
2 | Operates in reverse |
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Cause 1 | Phase order of power lines (U, V, W) is different | Inspection method | Check phase order of power lines (U, V, W) | Solution | Replace two of power lines (U, V, W) |
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3 | Operation is unstable |
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Cause 1 | Overload, brake release | Inspection method | Check connection of power lines (U, V, W phases), etc. | Solution | Fix loose terminals, etc. |
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4 | Slip down |
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Cause 1 | Malfunction of brakes | Inspection method | Check for brake operation noise | Solution | Please contact us |
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Inspection method | Check for loose or unconnected screws | Solution | Connect securely |
5 | Poor stopping accuracy |
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Cause 1 | Worn brake lining | Inspection method | Inspect brake gap | Solution | Adjust brake gap |
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6 | Abnormal noise/vibration occurs |
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Cause 1 | Loose bolts for fixing main unit | Inspection method | Check installation and loose bolts | Solution | Install correctly and tighten fixing bolts securely |
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Cause 2 | Open phase of power supply | Inspection method | Measure power supply voltage (U, V, W) | Solution | Connect power supply properly |