Troubleshooting
148
Name
Description
Possible Causes & Corrective Action
Stall Test Fault
Generated when the motor current
goes at or above a percentage
(defined by STALL TEST LVL) for
defined amount of time (defined by
STALL FAULT TIME).
Check Parameter Settings
➲
Check STALL TEST LVL
(A1) parameter for
the correct percentage of motor current
➲
Check CONTACT FLT TIME
(A1) parameter
for the correct time
.
➲
If nuisance fault, the fault can be disabled by
STALL TEST ENA (C1) parameter (set to
disabled).
Excessive Current Draw
➲
Decrease accel/decel rate
➲
Is elevator car being held in position? (i.e.
mechanical brake not releasing)
➲
Mechanical brake may not have properly
released
Motor Problem
➲
Check for motor failure
Accurate Motor Parameters
➲
Verify motor nameplate values are entered
correctly
➲
Complete Adaptive Tune and Inertia
procedure.
➲
As a last step, calculate motor parameters
from motor’s equivalent circuit.
Tq Lim
2Hi 4cube
[closed-loop]
The torque limits (based on the
defined motor) exceed the cube’s
capacity
Check Parameters Settings
➲
Verify motor nameplate values are entered
correctly in the A5 sub-menu
➲
Decrease both MTR TORQUE LIMIT (A1)
and REGEN TORQ LIMIT (A1) parameters
Drive Sizing
➲
Verify drive sizing. May need a larger
capacity HPV 600
Undervolt Flt
Generated during a run condition
when the DC bus voltage drops below
the user specified percent of the input
line-to-line voltage. The input line-to-
line voltage is specified by the Input L-
L Volts parameter and the fault level is
specified by the Undervoltage Fault
Level parameter.
Low Input Voltage
➲
Check INPUT L-L VOLTS (A4) and UV
FAULT LEVEL (A4) parameters
➲
Disconnect Dynamic Braking resistor and re-
try.
➲
Verify proper input voltage and increase, if
necessary, the input AC voltage within the
proper range
➲
Check for a missing input phase
➲
Check power line disturbances due to starting
of other equipment
Drive Accurately Reading the Dc Bus
➲
Measure the dc bus with a meter
➲
Compare that with the value on the digital
operator, DC BUS VOLTAGE (D2)
Hardware Problem
➲
The drive may need to be replaced.