7 Troubleshooting
MAGNETEK HPV1000 AC Elevator Drive Technical Manual 51
GF
Ground Fault
A current short to ground exceeded 50%
of rated current on the output side of the
drive.
Motor insulation is damaged.
• Check the insulation resistance of the motor.
• Replace the motor.
A damaged motor cable is creating a short circuit.
• Check the motor cable; remove the short circuit and turn the power back
on.
• Check the resistance between the cable and the ground terminal; replace
the cable.
The leakage current at the drive output is too high.
• Reduce the Carrier Frequency (A4).
• Reduce the amount of stray capacitance.
• The drive started to run during a current offset fault or while coasting to a
stop.
• The value set exceeds the allowable setting range while the drive
automatically adjusts the current offset (this happens only when attempting
to restart a PM motor that is coasting to stop).
Hardware problem.
• If the problem continues, replace the control board or the entire drive.
Contact Magnetek for instructions on replacing the control board.
Hbb
Safe Off Open
Both Safe Disable Input channels are
open.
Both Safe Disable Inputs H1 and H2 are open.
• Check signal status at the input terminals H1 and H2.
• Check the Sink/Source Selection for the digital inputs.
• If the Safe Disable function is not utilized, check if the terminals H1-HC,
and H2-HC are linked.
Internally, both Safe Disable channels are broken.
• Replace either the control board or the entire drive. For instructions on
replacing the control board, contact Magnetek.
HbbF
Safe Off Open 2
One Safe Disable channel is open while
the other one is closed.
The signals to the Safe Disable inputs are wrong or the wiring is incorrect.
• Check signal status at the input terminals H1 and H2. if the Safe Disable
function is not utilized, the terminals H1-HC, and H2-HC must be linked.
One of the Safe Disable channels is faulty.
• Replace either the control board or the entire drive. For instructions on
replacing the control board, contact Magnetek.
HCA
Hi Current Alarm
Drive current exceeded overcurrent
warning level (150% of the rated current).
Load is too heavy.
• Either reduce the load for applications with repetitive operation (repetitive
stops and starts, etc.) or replace the drive.
Acceleration/deceleration is too fast.
• Calculate the amount of torque required for the desired acceleration and/or
deceleration ramp relative to the inertia moment of the load.
• If the torque level is not right for the load, take the following steps:
• Lower the acceleration and deceleration times in the A2 sub-menu.
• Increase the capacity of the drive.
A special-purpose motor is being used, or the drive is attempting to run a
motor greater than the maximum allowable capacity.
• Check the motor capacity.
• Use a motor appropriate for the drive. Ensure the motor is within allowable
capacity range.
The current level increased due to a momentary power loss or while
attempting to perform a fault reset.
• The alarm will appear only briefly. There is no need to take action to
prevent the alarm from occurring in such instances.
Fault Code/Name Description Causes and Solutions
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