Company ProfileGuangzhou Bedford Electric Equipment Co., Ltd. which
was established in April 2007 with the brand " BEDFORD", is a
high-tech enterprise integrating with R&D, Production, Sales
and Services together. The company's main products: all kinds of
water pump inverter, solar photovoltaic inverter, general purpose
vector control inverter; Variable Frequency pump, integrated
intelligent water supply system, smart pump house and solar pumping
system, etc. With software and hardware integration, intelligent
control and remote monitoring platform combination, customize a
variety of water pump energy saving control system for customers
.Product IntroductionB6031I series products is specifically
designed for deep well submersible pump, Some models controller can
be set the parameter selection to control single-phase or
three-phase pumps. A variety of special features: Single-phase,
three-phase selection,Running automatically when power on,Sleep
down when have no water consumption,The water-level of deep well
and upper reservoir auto controlling,The water-level of deep well
auto controlling and constant pressure water supply,Various of
water supply fault alarm function,Many fault protection function.
Fault and Trouble ShootingFault CodeFault TypeReason SolutionLPLow
water pressureAbnormal sensor;Motor rotates in
the reverse direction;Insufficient water inflow;There
is air inside the pumpCheck the installation of
pressure transmitter;Check the motor whether rotates
in right direction;Check the parameter b00.09 (setting
value too big);Check the pump whether is vent out the air
insideHPHigh water pressureAbnormal sensor;The parameter b00.08
setting value is too smallCheck the installation of
pressure transmitter;Check the parameter b00.08 (setting
value too small)E022Sensor faultPressure
transmitter disconnected;Wrong pressure
transmitter wiring;Pressure transmitter
short circuit;Pressure transmitter break down Check the
cable between pressure transmitter and controller;Check the
sensor whether is normalA033Water shortage faultNo water in
the deep wellWater-level sensors in the deep well is
brokenCheck whether there is water in the deep wellCheck
whether the water-level sensors is broken.Controller Running
Fault and Trouble ShootingFault CodeFault
TypeReasonSolutionE001IGBT Ph-U Fault (OUT1)Acc/Dec time is too
short; IGBT module fault; Malfunction caused
by interference; Grounding is not properlyIncrease Acc/Dec
time;Check external equipments and eliminate interference;Ask
supplier for supportE002IGBT Ph-V Fault (OUT2)E003IGBT Ph-W Fault
(OUT3)E004Over-current When Acceleration (OC1)Acc time is too
short;Low input voltage;The power of controller
is smallProlong Acc time;Check the power
supply;Select bigger power controllerE005Over-current When
Deceleration (OC2)Dec time is too short;Load is too heavy;The power
of controller is smallProlong Dec time;Increase braking
unit;Select bigger capacity controllerE006Over-current When
Constant Speed Running (OC3)Sudden change of load;Low input
voltage;The power of controller is smallCheck the load;Check the
power supply;Select bigger capacity controllerE007Over-voltage When
Acceleration (OV1)High input voltage;Regenerative energy from
the motor is too largeCheck the power supply;Avoid to restart
the motor until it stop running completelyE008Over-voltage When
Deceleration (OV2)Dec time is too short;Load is too heavy;High
input voltageIncrease Dec time;Increase braking unit;Check the
power supply E009Over-voltage When Constant Speed Running (OV3)High
input voltage;Load is too heavyInstall input reactor;Increase
braking unitE010DC Bus Under-voltage (UV)Low input voltageCheck the
grid's input power supplyE011Motor Overload (OL1)Low input
voltage;Wrong setting of motor
parameter;Motor locked-rotor or sudden big change of load
to small load;The power of motor is too smallCheck the power
supply;Set the rated current of motor properly;Check the load,
adjust the value of torque boost;Select proper power
motorE012Controller Overload (OL2)Acc time is too short;Restart the
motor when it is decelerating;Low input voltage;Load is too
heavyProlong Acc time;Avoid to restart the motor until it stop
running completely;Check the power supply;Select bigger capacity
controllerE013Input Phase Failure (SPI)Open-phase occurred in power
supplyCheck the wiring, installation and the power supplyE014Output
Phase Failure (SPO)Open-phase occurred at output side of main
circuitCheck the output wiring, cable and motorE015Rectify Overheat
(OH1)Sudden over-current;Input/output side has short
circuit;Cooling fans of controller stopped or damaged;Ambient
temperature is too high;Wires or connectors of control board are
loose;Auxiliary power supply unit is damaged or low driving voltage
for IGBT;Power module bridge is damaged;Control board is
abnormalRefer to measures of over-current;Check the wiring;Replace
cooling fans;Decrease the ambient temperature;Check and
reconnect;Ask supplier for supportE016IGBT Ove
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