Invertek Drives elevator CORE Quick Start-Up Manual page 55

55 | P a g e
Display No. Description
message

26 Drive output fault

08 Heatsink over temperature

01 Brake channel over current

02 Brake resistor overload
Instantaneous over current on
drive output
(Triggered from
Drive Output Current Measurement)

03
 49 Output phase loss
U Phase PWM output Loss

88
V Phase PWM output Loss

89
W Phase PWM output Loss

90
Over voltage on DC bus

06
 58 Brake resistor overtemperature

81 Output (Motor) U Phase
overcurrent

82 Output (Motor) V Phase Loss
overcurrent

83 Output (Motor) W Phase Loss
overcurrent
 84 Ground current fault
 85 Output (Motor) U Phase Loss
Corrective Action/Further information
Drive output fault, Confirm all 3 motor phases are connected, check that output contactors are
closing fully, not arcing, or not opening whilst the drive is running.
Confirm contactor control connections to the drive are correct.
The heatsink temperature can be displayed in P0-48.
Check the drive ambient temperature
Ensure the drive internal cooling fan is operating
Ensure there is the required space around the drive as shown in section 7.2, and that the
cooling airflow path to and from the drive is not restricted
Reduce the effective switching frequency setting in parameter P11-05
Reduce the load on the motor / drive
Ensure the connected brake resistor is above the minimum permissible level for the drive –
refer to the ratings shown in section 6.
Check the brake resistor and wiring for possible short circuits.
The drive software has determined that the brake resistor is overloaded (based on the values
entered in P3-04 and P3-05), and trips to protect the resistor. Always ensure the brake resistor
is being operated within its designed parameter before making any parameter or system
changes.
To reduce the load on the resistor, increase deceleration time P8-04, reduce the load inertia or
add further brake resistors in parallel, observing the minimum resistance value for the given
drive.
Fault Occurs on Drive Enable
Check the motor and motor connection cable for phase – phase and phase – earth short
circuits.
Check the load mechanically for a jam, blockage, or stalled condition.
Is the drive sized correctly for the connected motor?
Ensure the motor nameplate parameters are correctly entered in P4-02, P4-03, P4-04, P4-05.
If operating in Vector mode (P4-01 – 0 or 1), also check the motor power factor in P4-07 and
ensure an autotune has been successfully completed for the connected motor.
If operating in Enhanced V/F mode reduce the Boost voltage setting in P4-09
Increase the acceleration ramp up time in P8-03
If the connected motor has a holding brake, ensure the brake is correctly connected and
controlled, and is releasing correctly.
If operating a Gearless motor check the encoder offset is correct and try repeating the
measurement to confirm consistent values are being measured (P4-08=3).
Fault Occurs When Running
If operating in Vector mode (P4-01 – 0 or 1, 3), reduce the speed loop gains as described in
section 13.3
Check all 3 motor phases are connected, confirm that motor contactor is closing
Check that the lift has been correctly balanced.
Check that a brake resistor is connected correctly to terminals +DC and BR.
Check the resistance of the brake resistor complies with the values in section 6.
If the fault occurs on stopping or during deceleration, increase the deceleration time in P8-04
If operating in Vector Mode (P4-01 = 0,1,3), reduce the speed loop gains as detailed in section
13.3
Check that the mains voltage level is within the range detailed in section 6.
The value of the DC Bus Voltage can be displayed in P0-40
Based on Brake resistor over temperature feedback via drive terminals.
U phase is not connected to the drive, check that output contactors are closing fully, not
arcing, or not opening whilst the drive is running, and see P10-08 (Motor connected check).
www.InvertekDrives.com