- NX series User's Manual POWER SUPPLY
Control keypad
61(86)
7
Fault
code
Fault Possible cause Correcting measures
16
Motor
overtemperature
Motor overheating has been detected by
frequency converter motor temperature
model. Motor is overloaded.
Decrease the motor load.
If no motor overload exists, check the
temperature model parameters.
17
Motor underload Motor underload protection has tripped.
22
23
EEPROM
checksum fault
Parameter save fault
−
faulty operation
−
component failure
24
Changed data
warning
Changes may have occurred in the
different counter data due to mains
interruption
No special actions required. Take a
critical attitude to the counter data.
25
Microprocessor
watchdog fault
−
faulty operation
−
component failure
Reset the fault
and restart.
Should the fault re-occur, contact your
nearest distributor..
32
Fan cooling Cooling fan of the frequency converter
does not start, when ON command is
given
Contact your nearest distributor..
34
CAN bus
communication
Sent message not acknowledged. Ensure that there is another device on
the bus with the same configuration.
36
Control unit NXS Control Unit can not control NXP
Power Unit and vice versa
Change control units
37
Device change Option board changed.
Different power rating of drive.
Reset
38
Device added Option board added.
Drive of different power rating added.
Reset
39
Device removed Option board removed.
Drive removed.
Reset
40
Device unknown Unknown option board or drive.
41
IGBT temperature IGBT Inverter Bridge overtemperature
protection has detected too high a short
term overload current
Check loading.
Check motor size.
42
Brake resistor
overtemperature
Brake resistor overtemperature protection
has detected too heavy braking
Set the deceleration time longer.
Use external brake resistor.
43
Encoder fault Note the exceptional Fault data record.
See 7.3.4.3. Additional codes:
1 = Encoder 1 channel A is missing
2 = Encoder 1 channel B is missing
3 = Both encoder 1 channels are missing
4 = Encoder reversed
Check encoder channel connections.
Check the encoder board.
50
Analogue input
I
in
< 4mA
(selected signal
range 4 to 20
mA)
Current at the analogue input is < 4mA.
−
control cable is broken or loose
−
signal source has failed
Check the current loop circuitry.
51
External fault Digital input fault.
52
Keypad
communication
fault
The connection between the control
keypad and the frequency converter is
broken.
Check keypad connection and possible
keypad cable.
Table 7-3. Fault codes