TECO A510s Series - Warning; Self-Diagnosis Detection Function

46
LED display Possible solutions
FU
fuse open
 Check IGBTs
 Check for short circuit at
inverter output.
 Replace inverter.
CF00
Operator
Communication
Error
 Disconnect the operator
and then reconnect.
 Replace the control board
CF01
Operator
Communication
Error 2
 Disconnect the operator
and then reconnect.
 Replace the control board
CTER
CT Failure
 Check current
transformer signal and
the voltage on the control
board.
CF20
Communication
Failure
 Check only use one kind
of communication type.
Protection
Failure
 Remove digital input
communication run
command
External
Overload
 Check external overload.
 Reset external overload
of digital input.
4.3 Warning / Self-diagnosis
Detection Function
When the inverter detects a warning, the
keypad displays a warning code (flash).
Note: The fault contact output does not
energize on a warning and the inverter
continues operation. When the warning is no
longer active the keypad will return to its
original state.
When the inverter detected a programming
error (for example two parameters contradict
each other of are set to an invalid setting), the
keypad displays a self-diagnostics code.
Note: The fault contact output does not
energize on a self-diagnostics error. While a
self-diagnostics code is active the inverter
does not accept a run command until the
programming error is corrected.
Note: When a warning or self- diagnostic error
is active the warning or error code will flash on
the keypad. When the RESET key is pressed,
the warning message (flash) disappears and
returns after 5 sec. If the warning or self-
diagnostic error still exists.
Refer to Table 4.2 for and overview, cause and
corrective action for inverter warnings and self-
diagnostic errors.
Table 4.2 warning / self-diagnosis and corrective
actions
LED display Corrective action
OV
(flash)
Over voltage

Increase deceleration
time
 Reduce input voltage to
comply with the input
voltage requirements or
install an AC line
reactor to lower the
input voltage.
 Remove the power
factor correction
capacitor.
 Use dynamic braking
unit.
 Replace braking
transistor or resistor.
 Adjust speed search
parameters.
UV
(flash)
under voltage

Check the input voltage.
 Check input wiring.
 Increase acceleration
time.
 Check power source
 Replace pre-charge
contactor
 Replace control board
or complete inverter.
OH1
Heatsink
overheat
 Install fan or AC to cool
surroundings.
 Replace cooling fan.
 Reduce carrier
frequency.
 Reduce load / Measure
output current