User Guide

Honeywell BACnet Fault Tracking 55
16. Fault Tracking
The table below presents the faults related to the BACnet CJ option board. For more
information, see also NX User's Manual, Chapter 9.
The BACnet CJ option board status LEDs have been described in more detail in Chapter
13.
Fault
code
Fault Possible cause Correcting measures
37
Device change CJ Option board changed. Reset
38
Device added CJ Option board added. Reset
39
Device
removed
CJ Option board removed. Reset
40
Device
unknown
Unknown option board.
53
Fieldbus fault -The CJ option board has lost all contact
with other devices on the network.
- Duplicate MAC ID (Bad Frames in
“Comm. status” is incremented every time
a frame is received from a device with the
same MAC id on the same segment.)
Check the installation.
If installation is correct contact the
nearest Honeywell distributor.
Check that MAC ID is unique.
54
Slot fault Defective CJ option board or slot. Check the CJ option board and slot.
Contact the nearest Honeywell
distributor.
Table 22. RS-485 CJ option board faults
You can define with parameters how the frequency converter shall react to certain faults:
Code Parameter Min Max Unit Step Default ID Note
P2.7.22
Response to
fieldbus fault
0 3 1 0 733
0=No response
1=Warning
2=Fault,stop acc. to
2.4.7
3=Fault,stop by
coasting
P2.7.23
Response to slot
fault
0 3 1 0 734
0=No response
1=Warning
2=Fault,stop acc. to
2.4.7
3=Fault,stop by
coasting
Table 23. Frequency converter responses to faults
These BACnet Specific fault codes can be read from panel V7.x.2.3 (x is the used, D=4,
E=5).
Fault
code
Fault Possible cause Correcting measures
0
None
1
Sole Master Only device on the network Add devices
2
Duplicate MAC ID Some other device has the same MAC ID Check MAC Addresses
3
Baudrate fault Option card notices traffic, but can’t lock
to the selected baudrate.
Check Baudrate
Table 24. BACnet specific faults