47
Electronic error codes - Hitachi
An error code is automatically displayed if a fault causes the frequency converter to trip out.
The following list contains error codes and their possible causes. For resetting see page 45.
Error
code
Explanation Description of possible fault
E01 Overload during continuous operation The most common codes in this category
are E01 and E03. This error may arise in
the event of momentary overload. This may
be due to the machine being run too quickly
or with a high load. Try reducing the speed,
alleviating the load by moving the position
of the weights and checking your tools. If
the error is an E03, you can try starting the
machine on another surface.
E02 Overload during retardation See E01
E03 Overload during acceleration See E01
E04 Overload at stationary position See E01
E05 Overload Occurs during prolonged overloads. If the
overload lamp has been lit for a length of
time, this will be the result when the elec-
tronics cannot handle the load any more.
Drop the speed or reduce the load by ad-
justing the weights or tools.
E07 Overvoltage May arise if there is a mechanical fault and
the motor generates current back to the
electronics. Check the mechanical function-
ality such as belts and bearings.
E08 EEPROM-error Occurs rarely but may arise from high tem-
peratures in the electrical housing. Open the
housing and air out. Check filters and cool-
ing fans in the housing.
E09 Undervoltage Occurs if the voltage is too low. May occur
where there are long cables or poor con-
nections (contacts). May also arise if there
are many users in the network. Try chang-
ing outlets, shortening cables and reducing
speed.
E10 Current transformer interference Contact service if this is the case. The inter-
nal transformer needs replacing.
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