213
Appendix B— Fault Log
VARIABLE SPEED DRIVE SERIES III LIT-12012999—June 2018 www.johnsoncontrols.com
Fault
code Fault Name Fault Type Default Possible Cause Remedy Realization
81
Fieldbus Fault Configurable Fault Loss of communication with
SA Bus, and the fieldbus reference
is the remote reference OR the
fieldbus control place is the remote
control place.
Check RS485 communication wiring.
Verify drive parameter are set correctly.
Check master programming to verify
proper addressing.
MCU
82
Bypass Overload Fault Over load when motor is in
bypass mode
Check motor connection situation MCU
83
Fieldbus Fault Configurable Fault Loss of communication with
Modbus RTU, and the fieldbus
reference is the remote reference
OR the fieldbus control place is the
remote control place.
Check RS485 communication wiring.
Verify drive parameter are set correctly.
Check master programming to verify
proper addressing.
MCU
84
Fieldbus Fault Configurable Fault Loss of communication with
Modbus TCP, and the fieldbus
reference is the remote reference
OR the fieldbus control place is the
remote control place.
Check Ethernet communication wiring.
Verify drive parameter are set correctly.
Check master programming to verify
proper addressing.
MCU
85
Fieldbus Fault Configurable Fault Loss of communication with
BACnet MSTP, and the fieldbus
reference is the remote reference
OR The fieldbus control place is the
remote control place and The fault
protection is not “NO action”
Check RS485 communication wiring.
Verify drive parameter are set
correctly. Check BACnet MSTP master
configuration programming to verify
proper addressing.
MCU
86
Fieldbus Fault Configurable Fault Loss of communication with
Ethernet IP, and The fieldbus
reference is the remote reference
OR The fieldbus control place is the
remote control place and The fault
protection is not “NO action”
Check Ethernet communication wiring.
Verify drive parameter are set correctly.
Check EIP master configuration
programming to verify proper addressing.
MCU
87
Fieldbus Fault Configurable Fault Loss of communication with
Profibus/Canopen/Devicenet
master on Slot A, and the fieldbus
reference is the remote reference
OR The fieldbus control place is the
remote control place and The fault
protection is not “NO action”
Check Profibus/Canopen/Devicenet
communication wiring. Verify drive
parameter are set correctly. Check
Profibus/Canopen/Devicenet master
configuration programming to verify
proper addressing.
MCU
88
Fieldbus Fault Configurable Fault Loss of communication with
Profibus/Canopen/Devicenet
master on Slot B, and the fieldbus
reference is the remote reference
OR The fieldbus control place is the
remote control place, and The fault
protection is not “NO action”
Check Profibus/Canopen/Devicenet
communication wiring. Verify drive
parameter are set correctly. Check
Profibus/Canopen/Devicenet master
configuration programming to verify
proper addressing.
MCU
89
Under Voltage Stop Fault The DC link voltage has reached the
Drive under voltage stop limit value.
Check the input voltage. DSP
90
Drive Under Temp Warning/Fault
•
Cold weather mode is not
enabled, and unit temperature is
less than -10 degree.
•
Cold weather mode is enabled
and Under Temp Fault Override
is not set, unit temperature is
less than -30 degree.
•
Cold weather mode is enabled
and under Temp Fault Override
is not set, unit temperature is
-20~ -30 degree. The temp <-20
degree when cold weather start
time out.
If unit temp -20 ~ -10 degree, start motor
in cold weather mode. If unit temp <-20
degree, Warm up unit above -20deg C
for proper operation using cold weather
mode. If still < -20 degree when cold
weather mode time out, try higher output
voltage in cold weather mode.
DSP
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