Technical information

7 – TROUBLESHOOTING
101
7.2 Fault Code Troubleshooting Table
The following is a list of possible faults that can be generated by the MX starter control.
Fault Code Description Detailed Description of Fault / Possible Solutions
Motor did not achieve full speed before the UTS timer (P9/QST09)
expired.
Check motor for jammed or overloaded condition.
Verify that the combined kick time (P14/CFN11) and acceleration ramp
time (P8/QST08) is shorter than the UTS timer setting is.
Evaluate acceleration ramp settings. The acceleration ramp settings may
be too low to permit the motor to start and achieve full speed. If so, revise
acceleration ramp settings to provide more motor torque during starting.
F01 UTS Time Limit Expired
Evaluate UTS timer setting and, if acceptable, increase UTS timer setting
(P9/QST09).
The MX motor thermal overload protection has tripped.
Check motor for mechanical failure, jammed, or overloaded condition.
Verify the motor thermal overload parameter settings (P3/QST03 and
P35-P38/PFN12-PFN16,) and motor service factor setting (P2/QST02).
Verify that the motor FLA (P1/QST01), CT ratio (P68/FUN03) and
burden switch settings are correct.
If motor OL trip occurs during starting, review acceleration ramp profile
settings.
Verify that there is not an input line power quality problem or excessive
line distortion present.
Verify that PF caps, if installed, are ahead of CTs.
F02 (F OL) Motor Thermal Overload
Trip
Reset overload when content falls below 15%.
Input phase rotation is not ABC and Input Phase Sensitivity parameter
(P67/FUN04) is set to ABC only.
Verify correct phase rotation of input power. Correct wiring if necessary.
F10 Phase Rotation Error, not
ABC
Verify correct setting of Input Phase Sensitivity parameter (P67/FUN04).
Input phase rotation is not CBA and Input Phase Sensitivity parameter
(P67/FUN04) is set to CBA only.
Verify correct phase rotation of input power. Correct wiring if necessary.
F11 Phase Rotation Error, not
CBA
Verify correct setting of Input Phase Sensitivity parameter (P67/FUN04).
Line frequency below 23 Hz was detected.
Verify input line frequency.
If operating on a generator, check generator speed governor for
malfunctions.
Check input supply for open fuses or open connections
F12 Low Line Frequency
Line power quality problem / excessive line distortion.
Line frequency above 72 Hz was detected.
Verify input line frequency.
If operating on a generator, check generator speed governor for
malfunctions.
F13 High Line Frequency
Line power quality problem / excessive line distortion.