E6580757
(Continued)
Error code
Communication
No.
Problem
Possible causes
Remedies
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| C | Overvoltage during | • The input voltage fluctuates abnormally. | • | Insert a suitable input reactor. |
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| (1) The power supply has a capacity of |
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| eration |
| 200kVA or more. |
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| (2) A power factor improvement capacitor is |
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| opened or closed. |
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| (3) A system using a thyristor is connected |
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| to the same power distribution line. |
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| • The motor is in a regenerative state be- | • | Install a dynamic braking resistor. | |||||
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| cause the load causes the motor to run at |
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| a frequency higher than the inverter out- |
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| put frequency. |
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| D | Inverter overload | • | The acceleration time | is too short. | • | Increase the acceleration time | . | ||
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| • The DC braking amount is too large. | • | Reduce the DC braking amount |
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| • | The V/F setting is improper. |
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| and the DC braking time |
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| • A restart signal is input to the rotating | • | Check the V/F parameter setting. | |||||
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| motor after a momentary stop, etc. | • | Use |
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| • The load is too large. |
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| • Use an inverter with a larger rating. | ||||
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| E | Motor overload | • | The V/F setting is improper. |
| • | Check the V/F parameter setting. | |||
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| • The motor is locked up. |
| • | Check the load (operated machine). | ||||
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| • | • | Adjust | to the overload that the | ||||
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| tinuously. |
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| motor can withstand during operation in a | |||
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| • An excessive load is applied to the motor |
| low speed range. |
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| during operation. |
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| * | 9 | Output phase failure | • A phase failure occurred in the output line | • | Check the main circuit output line, motor, | |||||
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| of the main circuit. |
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| etc., for phase failure. |
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| • | Enable | (Output phase failure de- | ||
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| tection). |
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| * | 8 | Input phase failure | • A phase failure occurred in the input line | • | Check the main circuit input line for phase | |||||
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| of the main circuit. |
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| failure. |
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| • | Enable | (input phase failure detec- | ||
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| tion). |
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| 2Eh | External thermal trip | • A thermal trip command is entered from | • | Check the external input device. |
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| an external input device. |
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| * | 20h | • The load torque rises up to the over- | • | Enable | (Over - torque trip selection) | |||||
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| torque detection level during operation | • | Check whether the system is in a normal | ||||
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| condition. |
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| F | Dynamic braking re- | • The deceleration time is too short. | • | Increase the deceleration time | . | ||||
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| sistor overload trip | • The dynamic braking amount is too large. | • | Use a dynamic resistor with a larger ca- | |||||
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| pacity (W) and adjust | (PBR ca- | ||
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| pacity parameter) accordingly. |
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| 10h | Overheat | • The cooling fan does not rotate. | • | Restart the operation by resetting the | |||||
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| • The ambient temperature is too high. |
| inverter after it has cooled down enough. | |||||
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| • The vent is blocked up. |
| • | The fan requires replacement if it does | ||||
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| • A heat generating device is installed close |
| not rotate during operation. |
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| to the inverter. |
| • | Secure sufficient space around the | |||
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| • The thermistor in the unit is broken. |
| inverter. |
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| • Do not place any | ||||
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| near the inverter. |
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| • Make a service call. |
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13 |
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| * | 1E | Undervoltage trip | • The input voltage (in the main circuit) is | • | Check the input voltage. |
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| (main circuit) |
| too low. |
| • | Enable | (undervoltage trip selec- | |||
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| tion). |
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| • To cope with a momentary stop due to | ||||
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| undervoltage, enable | |||
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| control) and |
*With a parameter, you can choose between