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40 Fault tracing
Fault indication/Fault
Chopper does not function.
Chopper starts to function at too low
a DC voltage.
Inverter trips on fault 3210 DC link
overvoltage.
Brake resistor or chopper overheats.
Fan supervision
See CIO-01 I/O module for distributed I/O bus control user's manual (3AXD50000126880
[English]).
Selecting the voltage
The voltage is preset, according to the drive supply voltage, at the factory for each brake
chopper. On the field, you need to adjust the voltage setting only if a brake chopper is
changed.
WARNING!
Obey the safety instructions of the drive. If you ignore them, injury or death, or
damage to the equipment can occur.
If you are not a qualified electrician, do not do installation or maintenance work.
To adjust the setting:
1. Stop the drive and do the steps in section
you start the work.
2. Remove the chopper front panel by undoing the four screws at the top and bottom of
the panel.
3. Set the voltage selection jumper on the chopper control board to the appropriate voltage
as shown below.
Cause
Chopper voltage setting too high.
Inverter overvoltage control is on.
Chopper voltage setting too low.
Chopper voltage setting is too high.
The maximum brake cycle ex-
ceeded or resistor cooling insuffi-
cient.
Chopper voltage setting incorrect or
jumper missing.
Electrical safety precautions (page 29)
Remedy
Check voltage setting.
Check parameters of all inverters.
Check that enable input is on.
Check voltage setting.
Check voltage setting.
Check parameters of all inverters.
Check duty cycle and resistor cool-
ing.
Ensure that voltage setting is correct
and jumper is properly in place.
before
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