47
SM01P
FAULT MESSAGES
FAULT
DESCRIPTION & POSSIBLE CAUSES
AF
High Temp. Fault: Ambient temperature is too high; Cooling fan has failed (if
equipped).
CF
Control Fault: A blank EPM, or an EPM with corrupted data has been installed. Per-
form a factory reset using Parameter 48 - PROGRAM SELECTION.
cF
Incompatibility Fault: An EPM with an incompatible parameter version has been in-
stalled. Either remove the EPM or perform a factory reset (Parameter 48) to change
the parameter version of the EPM to match the parameter version of the drive.
dF
Dynamic Braking Fault: The drive has sensed that the dynamic braking resistors are
overheating and shuts down to protect the resistors.
EF
External Fault: One of the TB-13 terminals is set as an External Fault input and that
terminal is open with respect to TB-11. Refer to Parameters 10, 11 and 12.
GF
Data Fault: User data and OEM defaults in the EPM are corrupted.
HF
High DC Bus Voltage Fault: Line voltage is too high; Deceleration rate is too fast;
Over-hauling load. For fast deceleration or overhauling loads, dynamic braking may
be required
JF
Remote Keypad Fault: The communication link between the drive and the optional
Remote Keypad has been lost. Check for proper wiring and/or noise.
LF
Low DC Bus Voltage Fault: Line voltage is too low.
OF
Output Transistor Fault: Phase to phase or phase to ground short circuit on the
output; Boost settings are too high; Acceleration rate is too fast; Failed output tran-
sistor.
PF
Current Overload Fault: VFD is undersized for the application; Mechanical problem
with the driven equipment.
UF
Start Fault: Start command was present when the drive was powered up. Must
wait 2 seconds after power-up to apply Start command if START METHOD is set to
NORMAL.
F1
EPM Fault: The EPM is missing or damaged.
FC,
F2 - F9,
Fo
Internal Faults: The control board has sensed a problem - consult factory.
To clear a fault, issue a STOP command on the terminal strip . The fault will only clear if
the condition that caused the fault has passed . For example, if the drive trips on a LOW
DC BUS VOLTAGE FAULT (LF) due to low input voltage, the fault cannot be cleared until
the input voltage returns to a normal level .
If the drive is programmed to automatically restart after a fault (see Parameter 03), the
drive will attempt to restart three times after a fault (the drive will not restart after CF, cF,
GF, FC, F1, F2-F9, or Fo faults) . If all three restart attempts are unsuccessful, the drive will
trip into FAULT LOCKOUT (LC), which requires a manual reset as described above .
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com