4-20mA Wireless I O Module 2 Channels AI 4-20mA Wireless Data
Transfer 2-3km
Introduction
LS-RAI02 Modbus RTU is a 1W I/O module, 2 analog inputs, Wireless
control 2km-3km. Use to connect sensors with PC/PLC wirelessly.
We can also instead the RF module inside by Lora module or by 4G
module. So the distance can be longer.
Lensen Wireless RTU features
- Portable device, DIN-rail mounting for easy installation
- Isolated inputs
- LEDs for power supply, communication, input, output status
- Flexible networking, point to point or point to multipoints
- DIP to change different modes
- Different types of I/O, DI, DO, AI, AO are available
- I/O expandable
- Short delay time
- Easy handing on RS485 network, support Modbus RTU protocol
- Support on-line upgrade. Can configure by customer in setting
mode
Character:
Transparent I/O System
Not need internet, no third party cell, no monthly fees
You have full control over your own carrier
Real time status feedback from the remote site
Fast installation and easy setup
General introduction
LS-RAIO Modbus RTU is an industrial controller designed by Lensen
Technology. It supports point to point, point to multi-points
wireless AI, AO (4-20mA or 0-5V or 0-10V signal) collection and
control. This wireless RTU has the advantage of easy installation,
no program required, no communication fee. It is reliable and
cost-effective substitution for rail signal cable and slip ring
signal wire.
This series we have 2AI, 2AO, 4AI and 4AO 4 items. Power output we
have 2 versions, one is 100mW for 600m LOS control distance, and
another one is 1W for 3km LOS control distance. For longer control
distance, we also have other higher power output radio modem to
configure.
Application area
LS-RAIO series are widely used for sensor’s signal wireless
collection and meters’ data wireless transmission, kinds of sensors
data like liquid level, flow, pressure, weight, temperature,
humidity, vibration, distance are applied. So wireless AI, AO
modules are widely used in oil, chemical industry, metallurgy,
water treatment, environmental protection, air conditioning,
medicine and other fields.
| Frequency | 433MHz or 450MHz or 470MHz |
| Power output | 1W |
| Products | 2AI |
| Input type | 4-20mA or 0-5V or 0-10V |
| Output type | 4-20mA or 0-5V or 0-10V |
| Resolution ratio | 24 bit |
| Accuracy | ±0.02% |
| Power supply | 9-36V DC usually use 24V DC |
| Interface | RS-485 |
| Channel No. | 16ch default, can program via DIP switch |
| Antenna | Sucker antenna with 1.5m cable |
| Working temperature | -35 °C ~ +75 °C industrial |
| Working humidity | 10%-90% relative humidity, no condensation |
| Dimension | 115×90×40(mm) |
| Fix way | Standard 3.5 inch industrial DIN guild rail |
About the DIP switch
1) Outer(right side) DIP 1-4 are used for channel setting. Please
check the following definition:
| Channel No. | DIP Setting | Channel No. | DIP Setting | Channel No. | DIP setting | Channel No. | DIP setting |
| 1 | 
1234
| 2 | 
1234
| 3 | 
1234
| 4 | 
1234
|
| 5 | 
1234
| 6 | 
1234
| 7 | 
1234
| 8 | 
1234
|
2) Outer(right side) DIP 5-8 are used for mode setting. Please
check the following definition
| DIP | Status | Function | Remarks |
| 5 | OFF | With feedback | |
| ON | No feedback mode | remote side DI, this side only DO |
| 6,7 | OFF,OFF | 1 to 1 control | Master set ID to X, Slave module’s ID set to X
(ie. master ID1, slave ID1. remember set ID the same) |
| 6,7 | ON,OFF | 1 to 2 slaves control | Master set to ID1,
2 slave modules’ ID set to 1 and 2 respectively |
| 6,7 | OFF,ON | 1 to 4 slaves control | Master set to ID 1,
4 salve modules’ ID set to 1, 2, 3 and 4 respectively |
| 8 | OFF | Slave mode | |
| ON | Master mode | |
Application diagram
1. Point to point control application
2. Point to multipoint application
3. Modbus RS485 wireless communication
