Vacon 20, Complete User'S Manual

Page: 57 / 160

fault tracing vacon
•
51
5
22
EEPROM checksum
fault
Parameter save fault
• faulty operation
• component failure
Contact the distributor
near to you.
25
Microcontroller
watchdog fault • faulty operation
• component failure
Reset the fault and
restart.
If the fault re-occur, con-
tact the distributor near to
you.
27
Back EMF protection
Drive has detected that the mag-
netized motor is running in start
situation.
• A rotating PM-motor
Make sure that there is no
rotating PM-motor when
the start command is
given.
29
Thermistor fault
The thermistor input of option
board has detected increase of
the motor temperature.
Check motor cooling and
loading. Check thermistor
connection (If thermistor
input of the option board is
not in use it has to be
short circuited).
34
Internal bus commu-
nication Ambient interference or defective
hardware.
If the fault re-occur, con-
tact the distributor near to
you.
35
Application fault
Application is not working prop-
erly. Contact the distributor
near to you.
41
IGBT Overtemperature
Overtemperature alarm is issued
when the IGBT switch tempera-
ture exceeds 110 °C. Check loading.
Check motor size.
Make identification run.
50
Analog input select
20% - 100% (selected
signal range 4 to
20 mA or 2 to 10 V)
Current at the analogue input is <
4mA; Voltage at the analogue
input is < 2 V.
• control cable is broken or
loose.
• signal source has failed.
Check the current loop
circuitry.
51
External fault
Digital input fault. Digital input
has been programmed as exter-
nal fault input and this input is
active.
Remove the external
device fault.
Fault
code
Fault name Possible cause Correcting actions
Table 5.1: Fault codes