The “current command” is the command value for the current control (torque control) and the “torque” is the feedback val

First of all, capacity reduction of the main circuit electrolytic capacitor is probable. Usually, the electrolytic capac

The following causes are probable for this Err display:- Operation error (for example, you tried to input a value other

The alarm E7 occurs when the forced stop signal of the servo system controller is enabled. Ensure the safety and cancel

Press the "MODE" key on the operation panel several times to display the faults history screen "E---". Then turn the set

The possible causes of the error UVT are as follows.- Low power supply voltage - Insufficient power supply capacity - Da

Setting Pr.79 (Operation mode) to "6" sets the switchover mode. Pressing the "PU/EXT" key on the operation panel during

"OL" stands for "overload". Whenever current of 150% or more of the inverter rated current flows, "OL" is ON. If you con

The regenerative overvoltage shutoff protective function is provided since the terminal voltage of the internal capacito

While the FREQROL-Z200 series and A500 series have a brake resistor built in the capacity up to 7.5K, the FREQROL-E500 s

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FAQ within [ Drive Products ]

1341-1350 of Total 1353

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Difference between the current command and torque

The “current command” is the command value for the current control (torque control) and the “torque” is the feedback value controlled by the current control ... More Details >>
- No：23624
- Release Date：2018/09/14 15:10
- Category： MELSERVO-J4 , MELSERVO-JE , MELSERVO-JN , MELSERVO-J3 , MELSERVO Others
Cause of overcurrent (OC2) at constant speed

First of all, capacity reduction of the main circuit electrolytic capacitor is probable. Usually, the electrolytic capacitor is replaced every 5 years on ave... More Details >>
- No：21407
- Release Date：2018/08/22 16:27
- Category： Inverters-FREQROL , FREQROL-A100
Err display on operation panel

The following causes are probable for this Err display:- Operation error (for example, you tried to input a value other than the available range of parameter... More Details >>
- No：22063
- Release Date：2018/08/22 16:30
- Category： Inverters-FREQROL , FREQROL-E500
Alarm E7

The alarm E7 occurs when the forced stop signal of the servo system controller is enabled. Ensure the safety and cancel the forced stop signal of the control... More Details >>
- No：23647
- Release Date：2018/09/14 15:10
- Category： MELSERVO-J4 , MELSERVO-JE
Faults history

Press the "MODE" key on the operation panel several times to display the faults history screen "E---". Then turn the setting dial to display the error displa... More Details >>
- No：21355
- Release Date：2018/08/22 16:27
- Category： Inverters-FREQROL , FREQROL-E700 , FREQROL-D700 , FREQROL-A700 , FREQROL-F700 , FREQROL-F700P , FREQROL-F700PJ
Error "E.UVT" (undervoltage protection)

The possible causes of the error UVT are as follows.- Low power supply voltage - Insufficient power supply capacity - Damage or failure Check the power suppl... More Details >>
- No：21295
- Release Date：2018/08/22 16:26
- Category： Inverters-FREQROL , FREQROL-E700 , FREQROL-D700 , FREQROL-A700 , FREQROL-F700 , FREQROL-F700P , FREQROL-F700PJ
Switching External operation, PU operation

Setting Pr.79 (Operation mode) to "6" sets the switchover mode. Pressing the "PU/EXT" key on the operation panel during External operation switches the mode ... More Details >>
- No：21289
- Release Date：2018/08/22 16:26
- Category： Inverters-FREQROL , FREQROL-E700 , FREQROL-D700 , FREQROL-A700 , FREQROL-F700 , FREQROL-F700P , FREQROL-F700PJ
Meaning of OL display

"OL" stands for "overload". Whenever current of 150% or more of the inverter rated current flows, "OL" is ON. If you continue operation with "OL" is displaye... More Details >>
- No：21449
- Release Date：2018/08/22 16:27
- Category： Inverters-FREQROL , FREQROL-V200
E．OV2 error

The regenerative overvoltage shutoff protective function is provided since the terminal voltage of the internal capacitor of the inverter can rise abnormally... More Details >>
- No：21544
- Release Date：2018/08/22 16:28
- Category： Inverters-FREQROL
Deceleration overvoltage (E.OV3)

While the FREQROL-Z200 series and A500 series have a brake resistor built in the capacity up to 7.5K, the FREQROL-E500 series does not have a built-in brake ... More Details >>
- No：21993
- Release Date：2018/08/22 16:30
- Category： Inverters-FREQROL , FREQROL-E500

1341-1350 of Total 1353

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