7 Troubleshooting
MAGNETEK HPV1000 AC Elevator Drive Technical Manual 53
oC
Overcurrent Flt
Drive sensors have detected an output
current greater than the specified
overcurrent level.
The motor has been damaged due to overheating or the motor insulation is
damaged.
• Check the insulation resistance.
• Replace the motor.
One of the motor cables has shorted out or there is a grounding problem.
• Check the motor cables; remove the short circuit and reapply the power to
the drive.
• Check the resistance between the motor cables and the ground terminal;
replace damaged cables.
The drive is damaged.
• Check the drive output side short circuit for broken output transistor: B1 or
+3 and U/V/W; - (negative) and U/V/W
• Contact Magnetek for assistance.
The load is too heavy.
• Measure the current flowing into the motor.
• Replace the drive with a larger capacity if the current value exceeds the
rated current.
• Determine if there is sudden fluctuation in the current level.
• Reduce the load to avoid sudden changes in the current level or switch to a
larger drive.
Acceleration/Deceleration is too fast.
• Lower the acceleration and/or deceleration rate in the A2 sub-menu.
• Use a larger capacity drive.
The drive is attempting to operate a specialized motor or a motor larger than
the maximum size allowed.
• Check the motor capacity.
• Ensure that the rated capacity of the drive is greater than or equal to the
capacity rating found on the motor nameplate.
Magnetic contactor (MC) on the output side of the drive has turned on or off.
• Set up the operation sequence so that the MC is not tripped while the drive
is outputting current.
Incorrect parameter settings.
• Lower the Carrier Frequency (A4) parameter.
• Change PWM Method (A4) to “2 Phase Modulate”.
• Check all the motor parameters in the A5 sub-menu for proper settings.
V/f setting is not operating as expected.
• Check the V/Hz ratio between the middle voltage/frequency and add the
minimum voltage/frequency.
• Lower the voltage if it is too high relative to the frequency.
Excessive torque compensation.
• Reduce the Torq Comp Gain (A1) until there is no speed loss and less
current.
Drive fails to operate properly due to noise interference.
• Review the possible solutions provided for handling noise interference.
• Review the section on handling noise interference and check the control
circuit lines, main circuit lines, and ground wiring.
The motor control method and motor do not match.
• Check that the drive is set to the correct motor control in Control Method
(U8).
oFA00
CNA Card Comp
Option compatibility error.
The option card installed into port CN5-A is incompatible with the drive.
• Check if the drive supports the option card to be installed. Contact
Magnetek for assistance.
A PG option card is connected to option port CN5-A.
• PG option cards are supported by option port CN5-C. Place the PG option
card into the correct option port.
oFA01
CNA Connect Flt
Option not properly connected.
The option board connection to port CN5-A is faulty.
• Turn off the power and reconnect the option card.
• Check if the option card is properly plugged into the option port. Make sure
the card is fixed properly.
• If the option is not a communication option card, try to use the card in
another option port. If the option card works properly in a different option
port, replace the drive because port CN5-A is damaged. If the error persists
(oFb01 or oFC01 occur), replace the option card.
Fault Code/Name Description Causes and Solutions
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