Hitachi Drives
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Apr 17, 2024 12:13 pm
Cause : Over-voltage protection comes when the drive internal main circuit DC voltage to reach or exceed the specified value.
- The protection circuit is activated to stop the inverter output.
- The circuit may also be activated by a surge voltage produced in the power supply system.
- Increase the deceleration time.
- Add suitable brake devices.
8 Replies
Jul 17, 2024 7:00 am
I have a Hitachi EX75UR-5, 2002 modell. I have a error code E07. Charging value between 28.2-28.4 volt. What can be the problem and more how to reset / remove the error. With the error code comes a beeping sound and the arm of the excavator can not lift fully up to its height.
Jul 17, 2024 7:16 am
@henk check the brake resistor.
This problem comes in running drive or new programming.
Jul 17, 2024 8:37 am
ok, but is there a brake resistor ? (excavator has no brakes) if so where to look for this
Jul 17, 2024 12:03 pm
Jul 19, 2024 11:52 am
Jul 19, 2024 4:38 pm
Jul 19, 2024 4:46 pm
