TM 5-3895-374-24-1
Maintenance
Maintenance
Before carrying out any operation inside the controller, switch off the supply circuits and
make sure that the capacitors are fully discharged (about 5 minutes after switch off)
CAUTION the DC voltage across the + and - or PA and PB terminals can reach 400 to
1000 V when charged, depending on the supply voltage
- The ALTIVAR ATV-45 2 does not require preventive maintenance, nevertheless the
following operations are recommended at regular intervals
check the condition and tightness of the connections,
make sure that the ventilation is effective and that the temperature around the controller
remains at an acceptable level,
remove the dust from the controller, if necessary
- Should anything unusual occur when putting the controller into service, or during
operation, make sure that all the recommendations relating to the environment and to
mounting and connecting the controller have been compiled with
Assistance with
The ALTIVAR is able to detect a certain number of faults and display them in the form of
maintenance
codes
Fault codes see table, pages 51 and 52
Fault storage
The first fault detected is displayed and stored if the control circuit voltage stays on The
fault relay drops out
Use of the circuit diagrams shown on page p 21 is recommended
Fault storage erasure
The fault code may be steady or flashing
In either case, switch off the power supply to the controller
If the fault code is steady, switch the power supply back on, this has the effect of erasing
the fault storage and resetting the controller
If the fault code is flashing, this indicates that the fault is still present Find the cause and
wait for the code to be steady before switching the power supply back on to reset the
controller
Special case: code OcF
With this type of fault, it is essential to switch off the speed controller’s power and control
circuits, to check the connection cables and the motor insulation. Carry out a self-diagnostic
process before resetting (p 53)
(page 3-201)
