Lenze 931W - Manual (Page 46)

Troubleshooting and fault elimination
Fault elimination for known error message (see Fluxx, ”Status” tab)
8

46 GHB 13.0002-EN 3.1
8.2 Fault elimination for known error message (see Fluxx, ”Status” tab)
Error message Cause Remedy
DC-bus voltage under-run DC-bus voltage too low Check supply voltage.
For DC supply voltages where the DC
source features a dynamic that is too high,
or where it is too limited due to the
maximum current, the maximum torque
and the accelerations have to be reduced
Brake voltage beyond the tolerance range Supply voltage of the brake beyond the
tolerance range
The brake voltage is displayed in the
”Status” tab under ”Brake voltage”
Check setting in the ”Service”
”Brake/voltage range” tab (setting range
18…32V).
Observe the correct polarity of the supply
voltage!
Motor temperature exceeded Evaluation of thermal detector has
actuated
Motor temperature too high
Incorrect or no thermal detector (931W)
Incorrect values in the ”Motor
temperature, speed and position value”
field: feedback connection between motor
and inverter interrrupted.
Electronic temperature exceeded Temperature of the electronics too high,
cooling not sufficient, utilisation of the
electronics too high
Check ambient conditions of the
electronics (T
ambient
<40°C ?)
Clean heatsink
Check mounting clearances (50 mm to all
sides)
Remove further heat sources near the
drive
Reduce load of the drive (reduce
accelerations, reduce max. torque)
Carry out resolver position adjustment
DC-bus voltage exceeded DC-bus voltage exceeded, braking energy
too high
Check braking accelerations and
slowing-down process, and, if required,
reduce braking accelerations
At 24 V/42 V DC-power supply: use
feedback-supplying power supply unit
Quick stop A quick stop has been effected Check cause (digital input, bus system
control,…)
Eliminate error cause, acknowledge error
Drive not referenced Drive not referenced / reference run has to
be carried out
For positioning: carry out reference run
Select the following setting for speed,
following error or torque control in the
”Referencing” tab to avoid reference run:
– Reference type ”none”
– Reference start: power up
– Absolute resolver position: -1
Motor current exceeded Motor is defective (earth fault or phase
leakage), output stage is short-circuited
Output stage and / or motor of the drive is
defective, return drive to manufacturer
Travel data set not executable Settings in travel data set not conflict-free Check of the settings in the ”Travel data
set” tab
Check of the software limit switch
(”System” tab, use software limit switch
for positioning only!
Check on whether the positioning target is
beyond the software limit switches