Water Pump Control Box, Three Phase, Three Applications by Different Sensor Connecting

Task: Program
Structure: Closed-Loop
Mathematical Model: Linear
Signal: Continuous
Function: Automatic Control
Certification: CE
Customization:

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Basic Info.

Model NO.
M931
Condition
Used
Customized
Non-Customized
Material
Plastic
Size
16*8.2*22.8
Weight
1.3kgs
Transport Package
Paper Carton
Specification
CE
Trademark
Leading Science & Technology
Origin
Changsha
HS Code
90328990
Production Capacity
40000PCS/Year

Product Description


Intelligent Pump Controller model M931 is an easy to use, programmable controlling & protection device for direct start, three phase deep well submersible pump, centrifugal pump, pipeline pump etc with output power from 0.75KW to 7.5KW (1HP-10HP)
Model M931 has many operation modes by adopting different electric installations. An important feature that makes the difference between Model M931 and common On/Off pump control box is the probe / sensor free in the well. Our special design makes it a very reliable and sensitive protection against pump dry run without installation probe / sensor in the well.

Product application
Model M931 is useful in all cases we need to control and protect single pump managing its turn-on and turn off by different electric installations.
echnica lcharacteristic
Control characteristic double liquid level control
pressure control
Control method Manual/Auto
Liquid level control characteristic pulse electrode probe&float switch
Pressure control characteristic pressure switch (n/c) & pressuretank
 
Main technical data
Rated output power 0.75-4KW(1HP-5.5HP)
5.5-7.5KW(7.5HP-10HP)
Rated input voltage AC380V/50HZ  ThreePhase
Trip response time of overload 5sec-5min
Trip response time of open phase <2sec
Trip response time of short circuit <0.1sec
Trip response time of under/overvoltage <5sec
Trip response time of dry run 6sec
Recovery time of over load 30min
Recovery time of under/over voltage 5min
Recovery time of dry run 30min
Trip voltage of over voltage 437V
Trip voltage of under voltage 301V
Liquid level transfer distance ≤1000m
Protectionfunction Dry run
Over load
Transient surge
Under voltage
Over voltage
Open phase
Pump stalled
Short circuit
 
Main installation data
Working temperature -25ºC--+55ºC
Working humidity 20%-90%RH,no drip sconcreted
Degree of protection IP22
Install position Vertical
Unit dimensions(LxWxH) 16x8.2x22.8cm
Unit weight(net) 1.3kg
 
RS485 technicaldata
Physics Interface RS485 Bus Interface:asynchronism  semiduplex
 
Baudrate
1200bps\2400bps\4800bps\9600bps
Default:9600bps
Protocol type MODBUS Protocol (RTU)

Typical usage scenarios include:
Houses
Flats
Holidays houses
Farms
Water supply from wells
Irrigations of greenhouses, gardens, agriculture
Rain water reuse
Industrial plants
Waste water tank / Sewage sink

Main features
. Built in pressure control or liquid level control switch:
Applied for water supply by liquid level control through float switch or liquid probe
Applied for water supply by pressure control through pressure switch and pressure tank
Applied for drainage by liquid level control through float switch or liquid probe
. Computer main board and module for industrial & civil pump
. Automatic stops the pump in the case of water shortage, protecting it from dry running without installing float switch or liquid probe in the well
. Auto / Manual switch
. Transient surge protection
. Over current (over load) protection
. Open phase protection
. Under voltage protection
. Over voltage protection
. Pump motor stalled protection
. LCD real-time display
. RS485 Communication
. Push button calibration
. Starts and stops the pump in accordance with the different liquid level
. Present liquid-level probe
. Pump accumulative running time displaying
. Pump last five fault record displaying
. User-friendly connection diagrams
. Integrated design, small size, easy to install
 

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