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Help CenterIsolated 4-20ma Signal Acquisition Module, 8-Channel Remote Data Acquisition For Rs-232/485 Bus
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Certification:CE, RoHS, ISO2008-9001
Isolated 4-20ma Signal Acquisition Module, 8-Channel Remote Data Acquisition For Rs-232/485 Bus
ISO AD series converter achieve the signal isolated acquisition between sensor and the host and can be used for a variety of sensors .ISO AD series of products can be used in industrial automation RS-232/485 bus system,4-20mA signal measurement, monitoring and control, small-signal measurement, and industrial-site signal isolation and long-term transmission and so on.
Products include power supply isolation, signal isolation, linearization, A/D conversion and RS-485 serial communication circuit module. Each serial port can connect maximum 256 PCS of ISOAD series modules, means of communication using character communication protocol or MODBUS RTU communication protocol. Its instruction set compatible with the ADAM modules, the baud rate is set by the user, with other manufacturers control module hanging in the same RS-485 bus, to facilitate host programming.
ISO AD series of products are based on single chip of intelligent monitoring and control systems, all the user sets such as the calibration value, address, baud rate, data format, checksum status and other configuration information is stored in nonvolatile memory EEPROM inside.
ISODA series of products according to industry standard design, manufacture, signal output / communication interface isolation, can withstand 3000VDC isolation voltage, anti-interference ability, high reliability. Operating temperature range: - 45℃ ~ +80℃.
Figure 1 ISOAD A08 functional scheme
Applications:
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● signal testing/monitoring/controlling ● Utility system such as intelligent building control and security monitoring project ● RS-232/485 industrial automation control system ● Industrial field signal isolation and long-line transmission ● Equipment operating monitoring ● Sensor signal testing ● Acquisition and record of industrial field data ● Development of medical and industrial products ● 4-20mA signal acquisition |
Specifications:
8-ch 4-20mA signal acquisition, signal between channel to channel is isolated RS-485/232 output can adjust the accuracy of module by programmed Testing accuracy > 0.1% Three-port isolation among Signal Input/output/power supply: 3000VDC Wide power supply: 8~50VDC High reliability, convenient programming, easy to install Users can set module address, baud rate, etc. by programmingSupport Modbus RTU communication protocol
2,Function of ISOAD A08:
ISOAD A08 is a 8 channel signal isolation acquisition module which is used for measuring 4-20mA/0-20mA current signal.
2.1 analog signal input
The acquisition precision of the product is up to the 24 bits. There are 8 channels for 4-20mA signal input. Every channel has been isolated and all the signals of Sunyuan products have been calibrated before delivery. Users could also program and calibrate the signals according to their needs by themselves easily.
2.2 Communication protocol
Communication interface: 1 Road Standard RS-485 communication interface, or one road standard RS-232 communication interface, which could be selected when ordering.
Communication Protocol: support standard Modbus RTU protocol and characters protocol. The communication protocol could be used by programming. Network communication is achieved between it and a variety of brands of PLC, RTU or computer monitoring system.
Data format: 10 bits. 1 start bit, 8 data bits, 1 stop bit.
Address: module address (0x00 ~ 0xFF) and baud rate (300 bps, 600 bps, 1200 bps, 2400 bps, 4800 bps, 9600 bps, 19200 bps, 38400bps) can be set; the communication networks, connected by twisted-pair shielded cable, could reach up to 1200 meters. Communication interface is of high anti-jamming design, ± 15KV ESD protection, and the communication response time is less than 100mS.
2.3 Anti-interference
The checksum could be set customized. Inside the module there is transient suppression diodes which can inhibit a variety of surge pulse and protect module and internal digital filter from grid frequency interference.
3,Model selection:
Enter the channel code communication interface
code range:01 ～ 08,number of channel
01:1 channel 4-20mA/0-20mA signal input 485: output is RS-485 interface
02:2 channel 4-20mA/0-20mA signal input
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