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IBC control Brännerigatan 5 A SE-263 37 Höganäs Tel +46 42 33 00 10 Fax +46 42 33 03 75
Fault finding
Green led flashes and the indicated red led is on,
-inverter has tripped due to:
Belt breakage - Belt skids - Magnetic transmitter or the
magnet is out of order - Magnet turned the wrong way
(wrong polarity) - Magnet transmitter connected wrongly -
Min. speed adjusted too low (frequency too low for the
motor to be able to work).
Too high winding temperature in the motor. Thermal contact
resets when temperature returns to normal level.
Input power is over 250 V, for more than 7 sec.
Input power is under 190 V, for more than 7 sec.
In above mentioned cases the inverter must be reset via connection block 11-12,
alternatively restarted.
The rotor has not the power to start, alternatively has not the energy to come
up to speed.
Inverter limits the
current
Too short acceleration access ramp - Too large rotor/too
small motor - rotor inactive - Motor out of order/incorrect
storage/winding fault/short circuit (measure the
co-resistance, should be approximately equal on all
phases).
Measure the power.
If the motor will not start at all.
Do test drive with high
- and low speed buttons to check that the inverter is correct.
Check speed reference signal from central equipment.
Connect 5-6, check operation conditions.
Check output voltage on the inverter phase-phase (U-V-W).
Voltage should be approximately the same between all
three phases. Under 50 Hz the voltage is less than 230 V
between the phases.
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