76 | P a g e
7.3 Fault Log
The Fault Log records the number of times a particular fault has occurred. To access the Fault Log, press the
MENU key until the Main Menu item, 6 FAULT LOG, appears.
Press ENTER key to access the list of faults. The Fault Log will continue to log the number of faults that have
occurred until it is reset through the Main Menu item 5 RESTART LOG or 7 CLEAR MEMORY. The Fault Log
is not to be confused with the restart counter. The restart counter is associated with the automatic restart
function and is reset whenever the input power is cycled OFF/ON.
Table 30 – Troubleshooting
If incoming circuit breaker continually trips when VFD starts, the
breaker and cable sizes should be sized by a certified
electrician. Consider increasing breaker size.
Is a fault code indicated?
Based on the fault code, resolve any factors that are likely
causing the fault. Clear the fault by pressing ENTER on the
keypad or by cycling input power OFF/ON.
Are the remote AUX switches
closed?
Check the status of the switches or jumpers connected to AUX1
and AUX2 on the Control Terminals. The LCD display indicates
the status of AUX terminals in the default display mode. All AUX
terminals must be set to ON for the motor to run in AUTO mode.
Are the signals to the Control
Terminals corrupted?
Shielded cable is required for AUX terminal switch leads longer
than 20 ft. Regular wire will induce capacitance in the line and
corrupt control signals. Shielded cable is recommended for all
control signal cables.
Is the keypad in MAN or OFF
mode?
The keypad will override signals on the Control Terminals when
MANUAL mode is selected. Keypad must be in AUTO mode for
external control signals to control the motor.
Is MAX FREQUENCY set to 0
Hz?
Check the parameter 1.1.2 MAX FREQUENCY.
Are the input terminals
energized?
Check the input circuit breaker and fuses.
Motor is turning the
wrong direction
Phase sequence on output
terminals U, V, W is out of order
Swap any two of the three motor leads on the output terminals
OR use parameter 1.1.6 REVERSE ROTATION via keypad.
Real Time Clock (RTC)
clearing or not providing
fault time stamps
Replace CR2032 battery, located on the Interface control board
to the left of the graphic display.
To Next Page