KMC Controls BAC-19 FlexStat Series - Troubleshooting; Alarm Issues; Alarm, (False) Fan Status Fail; Alarms, Other

BAC-19xxxx FlexStat Application Guide 16 AG200824A
Communication Issues
(MS/TP) Data Port Communication Issues
NOTE: For Ethernet-enabled models, the EIA-
485 data port is not supported.
• See the BAC-5051E documentation.
• Reduce the Max Master number down to the
minimum needed for that network.
• See also MS/TP Network Communication
Issues on page 16 below.
Ethernet/IP Network Communication Issues
• Restart the FlexStat.
• Check communication settings.
• Use a BAC-5051E router to check route status
for network issues such as duplicate network
numbers.
MS/TP Network Communication Issues
• Check the phasing of the power and network
lines. See Wiring Issues on page 23.
• Check MAC address and device instance
numbers (especially for duplicate numbers on
the network).
• Check that EOL switches are fully latched in
the correct positions (see the BAC-19xxxx
FlexStat Installation Guide).
• Check the baud rate setting (which should be
the same on all the controllers on the network).
• Check the Max Master setting in a
conguration tool. It should be (just) higher
than the highest numbered controller.
• Ensure wiring is correct. See Wiring Issues on
page 23.
• See Planning BACnet Networks (Application
Note AN0404A).
• Check for ground loops. See Avoiding and
Troubleshooting Ground Loops Application
Guide.
Application Index drop-down menu, click Save
Changes, right-click the FlexStat in the Network
Manager, select Reinitialize Device.... Restore
to the original application in the same manner.
NOTE: After the application has been changed,
most settings are returned to their
defaults. Congure them as needed.
TROUBLESHOOTING
Alarm Issues
Alarm, (False) Fan Status Fail
• Check conguration. Be sure the Fan Status
option is not enabled when there is no sensor/
switch for it.
• Check fan status input wiring.
• Check the connected fan status sensor/switch.
• Using KMC software, check that BI6 (or
equivalent fan status binary input) is not
congured as “Out Of Service.”
Alarms, Other
NOTE: Use KMC software to create any
additional alarms—see the Help system
in software for more information.
Back-Up Issues
NOTE: Backing up the existing settings and
rmware image before or during the
upgrade process is recommended
practice.
• Use KMC software to back up FlexStats. See
the software documentation.
• See also Updating Firmware Issues on page
22.