Intelligent Pump Control Panel M931

• Customization: Available
• Task: Program
• Structure: Closed-Loop
• Model NO.: M931
• Mathematical Model: Linear
• Signal: Continuous
• Degree of Protection: IP22
• Install Position: Vertical
• Unit Weight(Net): 1.3kg
• Unit Dimensions(Lxwxh): 16X8.2X22.8cm
• Transport Package: Paper Carton
• 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.

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

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)