TECO-Westinghouse F510 Series, Instruction Manual

Page: 403 / 444

10-5
LED display Description Cause Possible solutions
OPBFT
High pressure
fault
High pressure fault

Since feedback value of pump
pressure is lower than limit of
maximum flow.

Check feedback signal is
correct.

Check if feedback value of
pressure is lower than limit of
maximum pressure (23-12).
LSCFT
Low suction fault
Low suction fault

Insufficient water supply of effluent
channel leads to insufficient suction

PID difference is higher than its
level or current is lower than output
current level

Check if water of effluent
channel is enough, and
water supply is regular.

Check PID difference is
higher than its level or
current is lower than output
current level
CF00
Operator
Communication
Error
Errors of data transmission
occur in keypad

Keypad and inverter cannot
transmit data after power on 5
seconds

Disconnect the operator and
then reconnect.

Replace the control board
CF01
Operator
Communication
Error 2
Errors of data transmission
occur in keypad

Keypad and inverter can transmit
data but transmission error occurs
for more than 2 seconds

Disconnect the operator and
then reconnect.

Replace the control board
CT Fault
Fault occurs in voltage level
of three-phase input

Abnormal input voltage, too much
noise or malfunctioning control
board

Check input voltage signal
and the voltage on the control
board.
Double
Communication
Error
Redundant Profibus and
Modbus protocol

User may use two communication
mechanisms simultaneously

Check only one
communication mechanism is
used.
PTC Signal
Loss
PTC Signal Loss detecting
triggers error message

PTC connection trips and has
lasted for more than 10 seconds

Check if MT terminal and
GND terminal are connected.
OPR
Disconnection
Run command is set to
keypad mode (00-02=0).
But when the inverter runs,
the operator is
disconnected. Selection of
operator removed (16-09)
determines if the inverter
stops or displays fault
signal.

The inverter runs at keypad mode
(00-02=0), but warning of operator
being disconnected/ removed
occurs.

Check if the operator is
disconnected or removed.
FBLSS
PID Feedback
Signal Loss
When 23-19 > 0, the
inverter will display fault
signal on the basis of the
value of feedback pressure
< operation pressure setting
(23-02) x detection
proportion of loss pressure
(23-19) and detection time
of loss pressure (23-18)
passed, and 23-78=2 in the
meanwhile.

Since proportion of loss pressure
(23-19) is enabled and over high,
the inverter trips to fault. Thus,
feedback sensor cannot operate
properly or is not installed correctly.

Check if the proportion of loss
pressure (23-19) is set
correctly.

Make sure the feedback
sensor is installed correctly
and PID feedback signal
operates normally.
SC
Short Circuit
The inverter output or load
is at short circuit.

Short circuit or grounding fault
(08-23=1) occurs from the damage
to motor, insulation deterioration or
cable breakage.

Check if the load is at correct
wiring.
PF
Protection
OH1 error occurs for 3
times in 5 minutes when

Run command in multi-function
digital input terminals is not

Remove run command in
multi-function digital input