40
SMT-BD1/m
Chapter 7 – Fault finding
3 - OPERATION PROBLEMS
3.1 - NO MOTOR MOVEMENT
- Check that the drive is on.
- Check that the power supply is on.
- Check the drive fuses (F1 and F2) and the motor connection.
- Check the logic wiring of the signals FC+, FC-, ENABLE and RUN
- Check that the drive is enabled.
3.2 - MOTOR SUPPLIED BUT NO TORQUE
- Check that the parameters
Max. current
and
Rated current
are
≠
0.
3.3 - SHAFT LOCKED, ERRATIC OSCILLATIONS OR ROTATION AT MAXIMUM SPEED
- Check the resolver wiring on the X1 connector and the mechanical mounting of the resolver on the motor.
- Check the value of the motor parameters (number of pole pairs, resolver adjustment, motor phase).
3.4 - DISCONTINUOUS MOTOR ROTATION WITH ZERO TORQUE POSITIONS
- Check the connection of the three phase cables between motor and drive.
3.5 - LOUD CRACKLING NOISE IN THE MOTOR AT STANDSTILL
- Check that the Motor-Positioner-PLC groundings are made according to
the recommendations of chapter 4.
3.6 - LOUD NOISE IN THE MOTOR AT STANDSTILL AND WHEN RUNNING
- Check the rigidity of the mechanical coupling between motor and load (backlash and elasticity in the
gearboxes and couplings).
- Execute the AUTO-TUNING command again by choosing a lower bandwidth (Medium or Low).
4 - SERVICE AND MAINTENANCE
When exchanging a drive on a machine, proceed as follows:
- Check that the new drive has the same hardware configuration as the old one (including its address),
- Plug the parameter NovRAM of the old drive on the new one.
The new drive is now configurated like the old one.