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| PROTECTIVE FUNCTIONS |
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Operation Panel |
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| Check Point | Remedy |
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Display |
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| Is the usage frequency of the | Reduce the load GD2. Reduce the braking frequency. |
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| Brake unit | brake unit appropriate? | Clean the cooling fins. |
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| cooling fin | Are the cooling fins clogged? |
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| overheating | Is there any error in the inverter | Replace the cooling fan. |
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| unit cooling fan? |
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| Control board | Is there an error in the cooling fan? | Replace the cooling fan. |
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| ambient | Keep the ambient temperature within the |
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| Is | the | ambient temperature too |
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| temperature | specifications. |
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| high? |
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| error |
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| Is there an output short circuit or | Repair the output short circuit and ground fault. |
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| ground fault? (Check the motor | (Repair or replace the motor.) |
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| winding and insulation resistance.) | Lengthen the deceleration time. |
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| Output over | Was rapid acceleration attempted? |
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| current | Did the load fluctuate suddenly? | Eliminate the sudden fluctuate in the load. |
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| Was rapid deceleration attempted? | Lengthen the deceleration time. |
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| Were the motor's mechanical | Investigate the braking operation. |
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| brakes applied too quickly? |
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E.15 |
| Is the cooling fan's power supply | Repair the |
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| Cooling fan | output short circuited? |
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| power supply | Is the cooling fan's power supply | Replace the cooling fan power supply. |
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| error | abnormal? |
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| Is the fuse blown? | Replace the fuse. |
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| Is the DC circuit short circuited? | Repair the |
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| Capacitor |
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| DC fuse. |
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| Is there an output short circuit or | Repair the output short circuit and ground fault. |
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| overcurrent | ground fault? (Check the motor | (Repair or replace the motor.) |
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| winding and insulation resistance.) |
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| Is there an error in the cooling fan? | Replace the cooling fan. |
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| Clean the cooling fins. |
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| Cooling fin | Are the cooling fins clogged? |
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| Keep the ambient temperature within the |
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| overheat | Is the ambient temperature too |
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| specifications. |
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| high? |
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| Gate power | Is the gate output short circuited? | Repair the |
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| Replace the control power supply board. |
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| Is | there | an error in the control |
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| supply error |
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| power supply board? |
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•When the protective function is activated, take proper corrective action, reset the inverter, then resume operation.
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