Honeywell NX series User Manual page 85

14
Frequency
converter over
temperature
15 Motor stalled
16 Motor
overtemperature
17 Motor underload
22
EEPROM
23 checksum fault
24 Changed data
warning
25 Microprocessor
watchdog fault
32
Fan cooling
34 CAN bus
communication
36 Control unit
37
Device change
38
Device added
39
Device removed
40
Device unknown
41 IGBT temperature
42 Brake resistor
overtemperature
43 Encoder fault
50
Analogue input
I < 4mA
in
(selected signal
range 4 to 20
mA)
51
External fault
52 Keypad
communication
fault
Table 9-1. Fault codes
Fault tracing
Heatsink temperature is over 90 C.
Over temperature warning is issued when
the heatsink temperature exceeds 85 C.
Motor stall protection has tripped.
Motor overheating has been detected by
frequency converter motor temperature
model. Motor is overloaded.
Motor underload protection has tripped.
Parameter save fault
faulty operation
component failure
Changes may have occurred in the
different counter data due to mains
interruption
faulty operation
component failure
Cooling fan of the frequency converter
does not start, when ON command is
given
Sent message not acknowledged.
NXS Control Unit can not control NXP
Power Unit and vice versa
Option board changed.
Different power rating of drive.
Option board added.
Drive of different power rating added.
Option board removed.
Drive removed.
Unknown option board or drive.
IGBT Inverter Bridge overtemperature
protection has detected too high a short
term overload current
Brake resistor overtemperature protection
has detected too heavy braking
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
Current at the analogue input is < 4mA.
control cable is broken or loose
signal source has failed
Digital input fault.
The connection between the control
keypad and the frequency converter is
broken.
Check the correct amount and flow of
cooling air.
Check the heatsink for dust.
Check the ambient temperature.
Make sure that the switching frequency
is not too high in relation to ambient
temperature and motor load.
Check motor.
Decrease the motor load.
If no motor overload exists, check the
temperature model parameters.
No special actions required. Take a
critical attitude to the counter data.
Reset the fault and restart.
Should the fault re-occur, contact your
nearest distributor.
Contact your nearest distributor.
Ensure that there is another device on
the bus with the same configuration.
Change control units
Reset
Reset
Reset
Check loading.
Check motor size.
Set the deceleration time longer.
Use external brake resistor.
Check encoder channel connections.
Check the encoder board.
Check the current loop circuitry.
Check keypad connection and possible
keypad cable.
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