Lenze TCF Series User Manual
Page 62
FAULT MESSAGES
FAULT
DESCRIPTION & POSSIBLE CAUSES
Ad
A/D converter offset error - consult factory .
AF
High Temperature Fault: Ambient temperature is too high; Cooling fan has failed (if equipped) .
AL, A1-A4 Assertion level faults . Refer to section B .5 in Appendix B .
bF
Personality Fault: The personality (P94) stored on the EPM does not match the drive
model . Refer to Section 13 .2 .
CF
Control Fault: A blank EPM, or an EPM with corrupted data has been installed . Perform a
factory reset using Parameter 48 - PROGRAM SELECTION .
cF
Incompatibility Fault: An EPM with an incompatible parameter version has been installed .
Either exchange 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: TB-13A, TB-13C, and/or TB-13D is set as an External Fault input and one
of those terminals is open with respect to TB-4 . Refer to Parameters 10, 12, and/or 49 .
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; Overhauling
load . For fast deceleration or overhauling loads, dynamic braking may be required .
IL
Illegal Setup: TB-13A and TB-13D are both set for START FORWARD, or TB-13A is set
for RUN REVERSE and TB-13D is set for START FORWARD .
JF
Serial Fault: The watchdog timer has timed out, indicating that the serial link has been lost .
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;
Failed output transistor; Boost settings are too high; Acceleration rate is too fast .
PF
Current Overload Fault: VFD is undersized for the application; Mechanical problem with
the driven equipment .
rF
Flying Restart Fault: Drive was unable to synchronize with the motor during the restart attempt .
SF
Single-phase Fault: Single-phase input power has been applied to a three-phase drive .
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 .
F2 - F9, Fo Internal Faults: The control board has sensed a problem - consult factory .
To clear a fault issue a STOP command, either on the terminal strip or using the STOP button
on the optional remote keypad . 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 (Parameter 03), the drive
will attempt to restart three times after a fault (the drive will not restart after Ad, AL, A1-A4,
bF, CF, cF, GF, IL, 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 .
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