Appendix A—Fault and Warning Codes
40
Variable Speed Drives Series III
LIT-12012996—April 2018
www.johnsoncontrols.com
Appendix A—Fault and Warning Codes
Under this menu, you can find Active faults, History faults and Fault codes.
Table 50. Active Faults
Table 51. History Faults
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
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.
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.
Table 52. Fault Codes and Descriptions
Fault
Code
Fault Name
Fault Type
Default
Fault Type
Possible Cause
Remedy
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
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
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
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 you
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 you
