BONFIGLIOLI Agile Operating Instructions Manual page 333

Error protocol
Problem
The motor is very Load too high.
hot.
Motor temperature mon-
itoring connection
Ambient temperature
too high.
Setup not carried out.
Time until motor Flying Start is used.
starts seems
quite long
Motor stops dur- Load torque too high.
ing start-up.
Motor does not Reference value too low.
accelerate or
motor accelerates
very slowly.
Ramps too smooth.
Setup not carried out.
Control according to V/f
characteristic not suita-
ble.
Mechanical brake
Speed vibrations High load torques in the
case of field-orientated
control (DMC)
High load torques in the
case of sensor-less con-
trol (V/f characteristic)
PID controller
The reference value is
defined via an external
source.
The motor cables are
too long.
Troubleshooting
Cause
Reduce load.
Reduce acceleration and deceleration values.
Check rated current.
Use larger motor.
Check connection of thermal contact or measuring
resistance at MFI2.
Check setting of P570 (temperature evaluation).
Check setting of P617 (for KTY or PT1000).
Comply with permissible ambient conditions.
Ensure sufficient cooling.
Carry out setup.
For an asynchronous motor, switch to control accord-
ing to V/f characteristic (set P30 to 110).
Switch off Flying Start (if possible, not recommended
for synchronous motors).
Use P.645 = 20 (if possible).
Reduce load torque.
Reduce acceleration values.
Use larger motor.
Check P418 (Maximum frequency).
Check acceleration and deceleration values.
Set P475 and P492 to the appropriate reference fre-
quency source.
For definition of reference value via multifunction
input: For P452 (terminal X12.3) and P562 (terminal
X12.4), select the correct signal to set the reference
value ("1 - voltage" or "2 - current").
Check values for P420 (acceleration clockwise) and
P422 (acceleration anticlockwise).
Carry out setup.
For high torques at low speed, field-orientated con-
trol (DMC) may be suitable. Set P30 to 410 (asyn-
chronous motor) or 610 (synchronous motor).
Check if a mechanical brake is effective.
Check amplification and integral time settings of con-
trol functions.
Switch on slip compensation (P660).
Check parameters of V/f characteristic.
If the PID controller is used, check amplification,
integral time and derivative time.
Avoid electromagnetic interference on the control
cables.
Install mains and motor cables separately from the
control cables.
Use shielded control cables.
If an analog reference value is defined: Select a filter
time constant P451 for MFI1 or P561 for MFI2.
Carry out setup.
Shorten cables.
333
Possible remedy
06/2013 Operating Instructions
Agile