TECO L510S Series - Chapter 5 Troubleshooting and maintenance; 5.1 Error display and corrective action

5-1
Chapter 5 Troubleshooting and maintenance
5.1 Error display and corrective action
5.1.1 Manual Reset and Auto-Reset
Faults which cannot be recovered manually
Display Content Cause Corrective action
-OV-
Voltage too high
when stopped
Detection circuit malfunction Consult with the supplier
-LV-
Voltage too low
when stopped
‧ Power voltage too low
‧ Pre-charge resistor or fuse
burnt out.
‧ Detection circuit malfunction
‧ Check if the power voltage is
correct
‧ failed resistor or fuse
‧ Consult with the supplier
-OH-
The inverter is
overheated when
stopped
‧ Detection circuit malfunction
‧ Ambient temperature too high
or bad ventilation
Improve the ventilation
conditions, if no result then
replace the inverter
OH-C
The inverter is
overheated during
running
‧ IGBT temperature is too high or
poor ventilation
‧ Temperature sensor error or
circuit malfunctions
‧ Reduce carrier frequency
‧ Improve the ventilation
conditions, if no result then
replace the inverter
CtEr
Current Sensor
detection error
Current sensor error or
circuit malfunction
Consult with the supplier
HPErr
Inverter capacity
setting error:
Inverter capacity
setting 13-00 does
not match the rated
voltage.
The inverter capacity setting
(13-00) does not match the
hardware voltage levels
Check the inverter capacity
setting (13-00) to meet the
hardware voltage levels.
Err4
CPU Unusual
interruption
External noise interference
‧ Remove the interference
source then restart by
switching power OFF/ON
‧ If not resolved then consult
with the supplier
EPr
EEPROM problem Faulty EEPROM Consult with the supplier
COt
Communication
error
Communications disruption Check the wiring