Advanced RS485 Remote I/O Sensor for Data Acquisition and Signal Relay

• Customization: Available
• Theory: Thermal Relay
• Usage: Household Appliances Relay
• Model NO.: WJ71
• Phase: 2
• Electricity Type: Vacuum
• Number of Pole: 1
• Load: High Power Relay
• Protective Characteristics: Open Relay
• Action Principle: Rectifier Type
• Size: Miniature
• Type: Electric Parameter Relay
• Product Features: Low Cost, Small Size, Modular Design
• Product Features1: The Output Relay Status Can Be Set Through The RS-
• Product Features2: Three Isolation Between Signal Input, Output, and
• Product Features3: Three Way Switch Input, Ten Way Relay Output
• Product Features4: High Reliability, Easy Programming, and Easy Appli
• Product Features5: Supports Modbus RTU Communication Protocol and Aut
• Typical Applications: RS-485 Remote I/O, Data Acquisition
• Typical Applications1: Acquisition and Recording of Industrial Field Data
• Typical Applications2: Measurement of Sensor Signals
• Transport Package: Wayjunr
• Specification: 120 x 70 x 43mm
• Trademark: wayjunr
• Origin: Guangdong, China
• Production Capacity: 9999

Product Description

Three DI and ten DO relay outputs, RS-485/232 remote I/OmoduleWJ71

Product Overview:
The WJ71 product realizes signal acquisition and control between sensors and hosts, used to detect switchsignalsorcontrol device operation. The WJ71 series products can be applied in industrial automation control systems withRS-232/485 bus, measurement and control of switch signals, measurement and output of high and lowlevel signals, aswell as industrial field signal isolation and long-distance transmission, etc. The product includes power conditioning, switch quantity acquisition, relay output, and RS-485 serial
communication. Each serial port can connect up to 255 WJ71 series modules, and the communication methodadoptsASCII code communication protocol or MODBUS RTU communication protocol. The baud rate can be set bycodeandcan be hung on the same RS-485 bus as control modules from other manufacturers, making it easy for computer
programming.

Product selection:
WJ71 -  Communication interface 485: Output as RS-485 interface 232: Output as RS-232 interface	Selection Example 1: Model: WJ71-232 indicates that the communication interface is RS-232 Selection Example 2: Model: WJ71-485 indicates that the communication interface is RS-485

Company Profile

Shenzhen Weijunrui Technology Co., Ltd

Since: 2011
Specialty: The company's main products include analog acquisition modules, signal isolators/conversion modules, and signal transmitters
Capacity: Produce 10000 per month
Advanced Features:
Switching to TCP/network/remote IO module, Modbus RTU to TCP, RS232/485 to Ethernet, analog signal (current/voltage/thermistor/frequency/displacement/speed/pulse) isolation transmitter, mV differential signal amplifier, isolation amplifier, micro power DC-DC module power supply, etc

WJ71 General Parameters:

Function Introduction:

(Typical @+25 ℃, Vs is 24VDC)
Input type: switch input, 3-channel (DI0~DI2). Low level: Input<1V
High level: Input 4~30V

Input resistance: 3K Ω
Output type: A-type relay output, 10 channels (DO0~DO9). Normally open output. Contact load capacity: 5A 250VAC/30VDC. Contact form: 1H
Maximum switching voltage: 250VAC/30VDC
Maximum switching current: 5A
Maximum switching power: 1250VA/150W
Communication: RS-485 or RS-232 standard character protocol and MODBUS RTU communication protocol
Baud rates (2400, 4800, 9600, 19200, 38400, 57600, 115200bps) can be selected by software
The address (0-255) can be selected by software
Communication response time: 100 ms maximum
Working power supply:+8~32VDC wide power supply range, with internal anti reverse and overvoltage protectioncircuits
Power consumption: less than 3W
Working temperature: -45~+80 ℃
Working humidity: 10~90% (no condensation)
Storage temperature: -45~+80 ℃
Storage humidity: 10~95% (no condensation)
Isolation and voltage resistance: 3 isolates between input and output power supplies, with an isolationvoltageof1500VAC
Dimensions: 120mm x 70mm x 43mm

The WJ71 remote I/O module can be used to measure four switch signals and has four relay signal outputs. 1, Switching signal input and output
Three channel switch signal input, capable of connecting dry contacts and wet contacts. Please refer to thewiringdiagram for details; Ten relay normally open contact output. 2, Communication Protocol
Communication interface: 1 standard RS-485 communication interface or 1 standard RS-232 communicationinterface, please specify when ordering and selecting. Communication Protocol: Supports two protocols, the character protocol defined by the command set andtheMODBUS RTU communication protocol. The module automatically recognizes communicationprotocols and can achieve network communication with various brands of PLCs, RTUs, or computermonitoring systems. Data format: 10 digits. 1 start bit, 8 data bits, and 1 stop bit. The communication address (0-255) and baud rate (2400, 4800, 9600, 19200, 38400, 57600, 115200bps) canbeset;The communication network can reach a maximum distance of 1200 meters and is connectedthroughtwisted pair shielded cables. High anti-interference design of communication interface, ± 15KV ESD protection, communication responsetimeless than 100mS. 3, anti-interference
Checksums can be set as needed. There is a transient suppression diode inside the module, which caneffectivelysuppress various surge pulses and protect the module.

FAQ

Q: How to contact you?
A: Please contact us via email or online customer service