2km 433MHz 1W PLC HMI Wireless Irrigation Controller

Wireless Irrigation Control System PLC/HMI remote control valve ON-OFF system

Introduction

LS-EVC02 is a Radio based Electric valve Controller. It has built-in power charge circuit, adding a lithium battery, you could use solar power supply. LS-EVC02 is OK to control 2 stations 12V electric valves and connect 1 pressure sensor. Our irrigation systems are ideal for commercial/municipal applications such as farmland, orchard, street and highway landscaping, medians, parks, construction sites.

Application diagram

This system includes a master (LS-R324 wireless DTU) and a pump controller (LS-RDIO0202 wireless RTU) and some electric valve controllers (LS-EVC02).

You could connect LS-R324 wireless DTU to HMI, PC software or PLC via RS485 port. We support Modbus RTU protocol. Through programming your controller, you could realize remote control your main pump ON-OFF and electric valves ON-OFF automatically.

System requirements

All wireless devices in the same system should use the same frequency channel, with the same baud rate, then they can communicate with each other. Before using, please check channel and ID setting first. You could use the DIP to set channel (please refer DIP setting part)

Electric Valve Controller’s Parameter

RF parameter: 433MHz, 1W power output for 2km LOS wireless control, 9600bps , TTL interface

Power supply: 12V DC. We have built-in solar charge circuit. You could use solar panel+lithium battery to supply power for this board.

Battery type: 12V DC lithium Ion battery. Our charge circuit is based on 3S Lithium Ion battery. Lithium Ion nominal voltage is 3.6V – 3 x 3.6 = 10.8V, Lithium Ion full power is 4.2V - 3x4.2=12.6V. We recommend to use 12V, 10ah battery. Or you could choose proper capacity according your actual application requirements.

Solar panel: we recommend to use 18V, 30W solar panel. You could choose proper one according your local sunshine condition.

Electric valve: we can drive 2 stations of 12V DC electric valves

How to connect 2-wire battery

According to the above picture, you could connect 2 water flow switches, 2 electric valves and their limit switches, and 1 pressure sensor to this controller. Please connect one line of your water flow switch to Com Pin, the other line to our controller’s Pin 2 or Pin 4 like the picture shows(regardless of positive and negative). Connect two electric valves and their limit switches to corresponding pins as guided. Connect battery and solar panel correctly.

Note: If you use two wire battery, please make sure two jumper caps are connected.

Power LED

Power LED is to indicate wireless module’s working condition. When wireless module is waked up for data receiving and data transmitting, the LED will be On red. When wireless module is in sleep, the LED is OFF, at this mode, it can not transmit or receive data.

RF LED

RF LED is on wireless module. When data transmitting, Red LED blinks, when data receiving, blue LED blinks.

How to connect 4-wire battery

Please refer the wiring diagram above.

If you use four-wire battery, jumper cap does not need to connect.

About the DIP setting

a. DIP for channel

DIP 1-4 is for channel setting

DIP1 ON =2⁰ =1

DIP2 ON =2¹ =2

DIP3 ON =2² =4

DIP4 ON =2³ =8

DIP 5-8, no definition now, please keep them OFF

b. DIP for ID

DIP1 ON =20 =1

DIP2 ON =21 =2

DIP3 ON =22 =4

DIP4 ON =23 =8

DIP5 ON =24 =16

DIP6 ON =25 =32

DIP7 ON =26 =64

DIP8 ON =27 =128

Note:

a. If there are many devices communicating in the same system, please set all at the same channel.

b. If you want to change channel or ID, please cut off its power and turn off master first. Then change channel or ID DIP. Finally supply power again.The LED besides antenna will blink, power LED ON, that shows DIP changed successfully. Power LED not ON indicates DIP change failed. Please contact us for reset.

c. DIP reference for LS-R324 master and DIP for LS-RDIO0202 pump controller. This kind application, LS-R324 is master, others are all slaves. You could set different ID to differ the slaves.