RS232/RS485 signal to 12 analog signal isolation D/A converter WJ34
Product features:
RS-485/232 interface, isolated and converted into 12 standard analog signal outputs
Optional output of 4-20mA or 0-10V to control other devices
Analog signal output accuracy is better than 0.2%
Programmable calibration module output accuracy
Isolation and withstand voltage of 3000VDC between signal output/communication interfaces
Wide power supply range: 10~30VDC
High reliability, convenient programming, easy installation and wiring
User programmable module address, baud rate, etc
Supports Modbus RTU communication protocol and automatic recognition protocol
Standard DIN35 rail installation, with pluggable wiring terminals
External dimensions: 128 x 132 x 58mm
Typical applications:
0-10V standard analog signal output
Intelligent building control, security engineering and other application systems
RS-232/485 bus industrial automation control system
Light control, LED intelligent dimming control
Equipment operation debugging and control
Remote transmission and signal restoration of sensor signals
Industrial site actuator data given Figure 1 WJ34 module appearance diagram
Development of medical and industrial control products
4-20mA signal output
Product Overview:
The WJ34 series products achieve isolation and conversion of host RS-485/232 interface signals into standard analog signals for controlling remote devices. WJ34 series products can be applied
Used in industrial automation control systems on the RS-232/RS-485 bus, with standard signal outputs such as 4-20mA, 0-5V, 0-10V, etc., to control the execution equipment on industrial sites
Backup, control equipment, and display instruments, etc.
The products include power isolation, signal isolation, linearization, D/A conversion, and RS-485 serial communication. Each serial port can connect up to 255 WJ34 series modules,
The communication method adopts ASCII code communication protocol and MODBUS RTU communication protocol, automatically recognizes the communication protocol and replies, and the baud rate can be set by the code, which can communicate with it
His manufacturer's control module is mounted on the same RS-485 bus for easy computer programming.
The WJ34 series products are intelligent monitoring and control systems based on microcontrollers, with all user set calibration values, addresses, baud rates, data formats, and verifications
Configuration information such as status is stored in the non-volatile memory EEPROM.
The WJ34 series products are designed and manufactured according to industrial standards, with isolation between signal output/communication interfaces, capable of withstanding 3000VDC isolation voltage, and anti-interference ability
Strong and highly reliable. Working temperature range -45 ℃ to+80 ℃.
WJ34 Function Introduction:
The WJ34 signal isolation D/A conversion module can be used to output 12 common ground current or voltage signals.
1. Analog signal output
12 bit output accuracy, all signal output ranges have been calibrated before the product leaves the factory. When in use, users can also easily program and calibrate themselves.
For specific current or voltage output ranges, please refer to product selection. The selection of 12 output channels must be the same.
2. Communication protocol
Communication interface: One standard RS-485 communication interface and one standard RS-232 communication interface can communicate simultaneously without interfering with each other.
Communication protocol: Supports two protocols, the character protocol defined by the command set and the MODBUS RTU communication protocol. The module automatically recognizes communication protocols and can implement
We currently communicate with various brands of PLC, RTU, or computer monitoring systems through network.
Data format: 10 digits. 1-bit start bit, 8-bit data bit, 1-bit stop bit.
The communication address (0-255) and baud rate (2400, 4800, 9600, 19200, 38400, 57600, 115200bps) can be set; The communication network is the most
Long distance up to 1200 meters, connected through twisted pair shielded cables.
High anti-interference design of communication interface, ± 15KV ESD protection, communication response time less than 100mS.
3. Anti-interference
Checksum can be set as needed. There are transient suppression diodes inside the module, which can effectively suppress various surge pulses, protect the module, and perform internal digital filtering,
It can also effectively suppress power frequency interference from the power grid.
Product manual：https://www.wayjun.cn/d/
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