Two Channels Analog Signal to RS485/232 Converter Modbus Data Acquisition Module for Industrial Automation

• Customization: Available
• Conductive Type: Bipolar Integrated Circuit
• Input Type: Single-Ended
• Model NO.: WJ20
• Integration: GSI
• Operating Temperature: -40℃ - 85℃
• Resolution: 12 Bit
• Shape: DIP
• Technics: Semiconductor IC
• Features: 2-CH Analog Signal Acquisition, Isolated RS-485/23
• Features1: Can Program and Calibrate Modules Accuracy Via RS-
• Features2: High Reliability, Easy Programming, Easy Installat
• Feature3: 0-5V Voltage Signal or 4-20mA Current Signal Input
• Feature4: Defaults Modbus RTU Communication Protocol
• Typical Application: Signal Measurement/Monitoring/Control
• Typical Application1: RS-485 Remote I / O, Data Acquisition
• Typical Application2: 4-20mA or 0-5V Signal Acquisition
• Quantity: 9999
• Transport Package: Boxed
• Specification: 79 mm x 25 mm x 70mm
• Trademark: wayjunr
• Origin: Guangdong, China
• Production Capacity: 99999

Product Description

Two Channels Analog Signal to RS485/232 Converter
(WJ20 series A/D Converter, defaults MODBUS RTU) 

Features:
>> 2-CH analog signal acquisition, isolated RS-485/232 output
>> 16-bit AD converter, testing accuracy>0.1%
>> Can Program and calibrate modules accuracy via RS-485/232 interface
>> Signal input/output: 3000VDC Isolation
>> Wide power supply: 8~32VDC
>> High reliability, easy programming, easy installation.
>> Can program setting module address, baud rate
>> 0-5V voltage signal or 4-20mA current signal input
>> Defaults MODBUS RTU communication protocol
>> DIN35 Rail-mounted
>> Small size (79.00x70.00x25.00mm)
Typical Application:
>> Signal measurement/monitoring/control
>> RS-485 remote I / O, data acquisition
>> RS-232/485 bus industrial automation control system
>> Industrial field signal data acquisition and recording
>> Industrial field signal isolation and long-term transmission
>> Medical, industrial product development
>> 4-20mA or 0-5V signal acquisition 

Product Overview:
 WJ20 series products realize the signal acquisition between sensor and host, to measure analog signals. WJ20
products can be applied to RS-232/485 bus industrial automation control system,4-20mA / 0-5V signal measurement,
monitoring and control, and signal isolation and long-term industrial transmission and so on.
Products include power supply isolation, signal isolation, linearization, A/D conversion and RS-485 serial
communication. Each serial interface can connect up to 255 pieces WJ20 Series modules, communication mode defaults
MODBUS RTU protocol, the default address is 01, baud rate is 9600, data format is 10bits, 1 start bit, 8bits data bit, 1
stop bit, no check. Also supports ASCII code communication protocol, baud rate can been set by the code, with other
manufacturers control module hang in the same RS-485 bus for easy programming. 

Specification

Product Selection:	WJ20
Input Voltage or Current Signal U1:0-5V            A1:0-1mA   U2:0-10V        A2:0-10mA                              A3:0-20mA                             A4:4	485: output is RS-485 interface   232: output is RS-232 interface
Sample 1: part No.:WJ20-A4-485 4-20mA input signal,output is RS485 interface	Sample 2: part No.:WJ20-U1-232 0-5V input signal,output is RS232 interface	Sample 3: part No.:WJ20-U2-485 0-10V input signal,output is RS485 interface

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

Global Showrooms

Factory Capabilities

Product Overview:
 WJ20 series products realize the signal acquisition between sensor and host, to measure analog signals. WJ20
products can be applied to RS-232/485 bus industrial automation control system,4-20mA / 0-5V signal measurement,
monitoring and control, and signal isolation and long-term industrial transmission and so on.
Products include power supply isolation, signal isolation, linearization, A/D conversion and RS-485 serial
communication. Each serial interface can connect up to 255 pieces WJ20 Series modules, communication mode defaults
MODBUS RTU protocol, the default address is 01, baud rate is 9600, data format is 10bits, 1 start bit, 8bits data bit, 1
stop bit, no check. Also supports ASCII code communication protocol, baud rate can been set by the code, with other
manufacturers control module hang in the same RS-485 bus for easy programming. 

WJ20 series products are based on SCM's intelligent monitoring and control system, users set the calibration value,
address, baud rate, data format, checksum status, and configuration information are all stored in nonvolatile memory
EEPROM.
 WJ20 products are according to industry standard design, isolation between signal input / output, can withstand
voltage 3000VDC, high anti-interference ability and reliability. Operating temperature range is - 45 ~ +85 °C. 

General parameters:
 (typical @ +25 ℃, Vs to 24VDC)
 Input type: Input current / voltage input
 Accuracy: 0.1%
 Temperature drift:± 50 ppm / ℃ (± 100 ppm / ℃, maximum)
 Input Resistance: 100 (4-20mA/0-20mA/0- 10mA current input)
 2K (0-1mA current input)
 >200K (0-5V/0-10V voltage input)
 >1M ( below 2.5V voltage input)
Bandwidth: -3 dB 10 Hz

AD Conversion rate: 10 SPS (Factory defaults, the user can issue commands to modify the conversion rate)
You can set the AD conversion rate 2.5 SPS, 5 SPS, 10 SPS, 20 SPS, 40 SPS, 80 SPS, 160 SPS, 320 SPS, 500 SPS,
1000 SPS command. (Channel conversion rate = AD conversion rate / Open numbers of channel)
 NOTE: after Modify the conversion rate, need re-calibration module, otherwise the measurement data
will be biased. You can also specify the conversion rate when ordering, we press the conversion rate you require
recalibration in the factory.
Common Mode Rejection (CMR): 120 dB (1k Source Imbalance @ 50/60 Hz)
Normal Mode Rejection (NMR): 60 dB (1k Source Imbalance @ 50/60 Hz)
Input Protection: over-voltage protection, over-current protection
Communication: RS-485 protocol or RS-232 standard characters protocols and MODBUS RTU communication
protocol
 Baud Rate (2400, 4800, 9600, 19200, 38400 bps) can be selected via software
Address (0 to 255) can be selected via software
Communication Response Time: 100 ms maximum
Power Supply: +8 ~ 32VDC wide range power supply, internal anti-reverse and over-voltage protection circuit
Power Loss: less than 1W
Operating Temperature: - 45 ~ +80 ℃
Humidity: 10 ~ 90% (no condensation)
Storage Temperature: - 45 ~ +80 ℃
Storage Humidity: 10 ~ 95% (no condensation)
Isolation Voltage: input / output: 3KVDC, 1 minute, leakage current:1mA
 Which output signal and power supply are common ground.
Shock Voltage: 3KVAC, 1.2/50us (peak)
Dimensions: 79 mm x 70mmx25mm 

Certifications

FAQ

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