Corrective maintenance
9.4 Reduced acceptance after component replacement and firmware change
Converter with the control units CU240D-2
Operating Instructions, 04/2018, FW V4.9 SP10, A5E34262100B AF
307
9.4
Reduced acceptance after component replacement and firmware
change
After a component has been replaced or the firmware updated, a reduced acceptance test of
the safety functions must be performed.
Measure
Acceptance test
Acceptance test
Documentation
Replacing the Control Unit.
No.
Only check the direc-
tion of rotation of the
motor.
•
Supplement the inverter data
•
Log the new checksums
•
Countersignature
Replacing the Power Module.
Supplement the hardware version in
the inverter data
Replacing the motor with an iden-
tical pole pair number
No change.
Replace the gearbox with an iden-
tical ratio
Replacing safety-related I/O de-
vices (e.g. Emergency Stop
switch).
No.
Only check the control
of the safety functions
that are influenced by
the components that
have been replaced.
No change.
Inverter firmware update.
No.
•
Supplement firmware version in the
inverter data
•
Log the new checksums
•
Countersignature.
9.5
If the converter no longer responds
If the inverter no longer responds
For example, when loading an incorrect file from the memory card, the inverter can go into a
state where it can no longer respond to commands from the operator panel or from a higher-
level control system. In this case, you must reset the inverter to its factory setting and
recommission it. This inverter state is manifested in two different ways:
Case 1
●
The motor is switched off.
●
You cannot communicate with the inverter, either via the operator panel or other
interfaces.
●
The LEDs flicker and after 3 minutes the inverter has still not powered up.
