Troubleshooting 10-3
1560D-UM051D-EN-P – February 2005
Table 10.A
Fault Display Explanation
Display Fault Code Possible Causes Possible Solutions
Power Loss X
(with phase indication)
F1, F2, F3 • missing supply phase (as indicated)
• check for open line (eg. blown line fuse)
• check voltage feedback circuits
Power Loss
(with phase indication)
F30, F31, F32
• missing supply phase (as indicated)
• converter module and/or cable
failure
• check for open line (eg. blown line fuse)
• inspect converter module and current transformer
connections
F11
F12
F13
• missing supply
• motor not connected properly
• shorted SCR(s)
• check for open line
• check voltage feedback circuits
• check for open load lead
• check voltage feedback circuits
• check for shorted SCR(s), replace if necessary
• check interface board voltage feedback inputs for shorts
Line Fault X
(with phase indication)
F26
F27
F28
• missing supply phase
• inspect Bulletin 825 converter module cable
connections
• check programming values in Calibration section
• consult the factory
F15 • see line fault (with phase indication)
Line Fault Y
(no phase indication)
F29
• see line fault (with phase indication)
• converter module and/or cable
failure
• inspect converter module and current transformer
connections
Undervolt F4
• supply voltage is less than user
programmed value
• the time delay is too short for the
application
• check power system and correct if necessary
• correct the user programmed value
• check that the voltage divider is correct for the system
voltage
• extend the time delay to match the application
requirements
Overvolt F5
• supply voltage is greater than the
user-programmed value
• check power system and correct if necessary
• correct the user-programmed value
• check that the voltage divider is correct for the system
voltage
Stall F6
• motor has not reached full speed by
end of the programmed ramp time
• correct source of stall
• adjust start parameters
Overload F7
• motor overload
• overload parameters are not
matched to the motor
• correct motor overload condition
• check programmed values for overload class, FLC,
CT ratio, converter rating, etc.
Controller
Temperature
F8
• controller ventilation blocked
• controller duty cycle exceeded
• fan failure (if supplied)
• ambient temperature limit exceeded
• failed thermistor
• failed control module
• failed gate driver board
• failed fibre optic cable
• failed interface board
• bypass contactor did not close
• check for proper ventilation
• check application duty cycle
• repair or replace fan
• wait for controller to cool or provide external cooling
• check connection or replace thermistor
• replace control module
• test or replace gate driver board
• replace fibre optic cable
• test or replace interface board
• check bypass contactor and control circuit
X Prestart fault indication.
Y To further define this fault, the user can clear the fault and re-initiate a start signal. If the
fault condition is still present, the controller may display either a power loss or a line fault
with the phase indicated.
(continued …)
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