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Appendix B— Fault Log
VARIABLE SPEED DRIVE SERIES III LIT-12012999—June 2018 www.johnsoncontrols.com
Appendix B— Fault Log
Under this menu, you can find Active faults, History faults and Fault codes.
Table 215. Active faults
Menu Function Note
Active Faults When a fault/faults appear(s), the display with the name and fault time of
the fault will be pop. Press DETAIL to see the fault data.
The Active Faults submenu shows the list of faults. Select the fault and push
DETAIL to see the fault data.
The fault remains active until it is cleared with the Reset button
(push for 2s) or with a reset signal from the I/O terminal or Fieldbus.
The memory of active faults can store the maximum of 10 faults in
the order of appearance.
Table 216. History faults
Menu Function Note
History Faults 10 latest faults are stored in the Fault history, Select the fault and push
DETAIL to see the fault data.
The history fault will be stored until it is cleared with the OK button
(push for 5s).
The memory of active faults can store the maximum of 10 faults in
the order of appearance.
Fault codes and descriptions
Configurable 1 = The fault type of this fault is configurable, fault type can be configured as
0 = No Action; 1 = Warning; 2 = Fault; 3= Fault, Coast
Fault
code Fault Name Fault Type Default Possible Cause Remedy Realization
1
Over Current Fault AC drive has detected too high a
current (>4*IH) in the motor cable:
•
Sudden heavy load increase
•
Short circuit in motor cables
•
Unsuitable motor
•
Check loading
•
Check motor
•
Check cables and connections
•
Make identification run
•
Check ramp times
DSP
2
Over Voltage Fault The DC-link voltage has exceeded
the limits defined:
•
Too short a deceleration time
•
Brake chopper is disabled
•
High overvoltage spikes in supply
•
Start/Stop sequence too fast
•
Make deceleration time longer
•
Use brake chopper or brake resistor
(available as options)
•
Activate overvoltage controller
•
Check input voltage
DSP
3
Earth Fault Configurable Fault Current measurement has detected
that the sum of motor phase current
is not zero:
•
Insulation failure in cables
or motor
Check motor cables and motor DSP
5
Charging Switch Fault
•
The charging switch is open,
when the START command has
been given:
•
Faulty operation
•
Component failure
•
Reset the fault and restart
•
Should the fault re-occur, contact the
distributor near to you
DSP
7
Saturation Trip Fault
•
Short circuit in motor cables
•
IGBT module is damaged
•
Check cables and connections
•
Reset the fault and restart
•
Verify that EMC screw is installed
•
Should the fault re-occur, contact the
distributor near to you
DSP
9
Under
Voltage
Configurable Fault DC link voltage is under the voltage
limits defined:
•
Most probable cause: Too low a
supply voltage
•
AC drive internal fault
•
Defect input fuse
•
External charge switch not closed
Note: This fault is activated only if
the drive is in Run state.
In case of temporary supply voltage break
reset the fault
and restart the AC drive Check the
supply voltage. If it is adequate, an
internal failure has occurred. Contact the
distributor near you
DSP
10
Input Phase Superv Configurable Fault Input line phase is missing Check supply voltage, fuses and cable DSP
11
Output Phase Superv Configurable Fault Current measurement has
detected that there is no current in
one motor phase
Check motor cable and motor DSP