PROBLEM
POSSIBLE CAUSE
SOLUTION
Report high line voltage to the power
utility company
The running voltage is higher than
the calibrated voltage, pump is in
over voltage protection state
Controller will attempt to restart the
pump every 5 minutes until line
voltage is restored to normal
Report to the power utility company
Power supply phase loss
Controller will attempt to restart the
pump every 5 minutes until the
voltage between three phases is
restored to normal
T h e v o l t a g e b e t w e e n t h r e e
phase(R/S/T) is not same and the
difference is more than ±15%
21
Check and reconnect power and
pump cable
Loose wires or no connections on the
controller and/or pump
Report to the power utility company
Flashing
OVER V
Change the sequence of the three
phase (R/S/T)
Phase sequence of the three phase
input voltage (R/S/T) is not uniform
Wa i t f o r t h e m o t o r w i n d i n g
temperature to cool down the
thermal switch is open.
The temperature in the motor
winding is high and the thermal
switch contact is open
Connecting the controller to SC
/computer for remote monitoring
No communication link between
computer and controller
Flashing of
OPEN
PHASE
Flashing of
THREE
PHASE
UNBALANCE
Flashing of
PHASE
REVERSAL
Flashing of
OVER TEMP
Содержание SMARTCON 2
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