Type:Logic ICs
Condition:New
Model Number:8AI Compatible type
8-channel universal analog isolated input module
1 Product Overview
8AI 8-channel analog universal isolated input module is a universal remote I/O product in the automation system. It realizes the isolated acquisition of 8 analog voltage and current signals through RS485 communication interface.
This module is designed for all industrial applications, four-terminal isolation, that is, the electrical power supply, analog signal input and RS485 communication interface are electrically isolated from each other, effectively suppressing various serial and common mode interferences in the industrial field, ensuring work reliability and data precision. degree. The RS485 communication interface implements the MODBUS RTU protocol and can be directly connected to various PLCs, DCS systems, man-machine screens and various configuration software.
The input signal of 8AI can be selected from 0~20mA, 4~20mA, 0~5V, 0~10V and other formats.
2 Product Features
l 8 analog inputs, 12bit resolution, acquisition accuracy ±0.1%
l Various signal specifications input such as0~20mA, 4~20mA, 0~5V, 0~10V can be support
l Support analog signal disconnection detection (4~20mA specification)
l All functions are software configuration, no dial switch and internal jumper to ensure product reliability
l Has the function of hardware forced recovery communication parameter factory configuration
l Full industrial lightning protection design, using magnetic isolation technology to achieve three-terminal isolation between power supply, communication port and signal input
l MODBUS RTU communication protocol
l DC10~30V wide range power input, anti-reverse connection
3 Product Specifications
| | | | 8 analog inputs Signal specifications: 0~20mA, 4~20mA, 0~5V, 0~10V, etc. With wire break detection (for 4~20mA format signals) Sampling frequency: 100Hz Electrical isolation: 1500V (customizable 3000V) |
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| | Analog input | | |
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| | | | Physical type: RS485 Communication protocol: MODBUS RTU Communication rate: 1200/2400/4800/9600/19200/38400/57600/115200bps Calibration method: no parity, odd parity, even parity Stop bits: 1 bit, 2 bits 1500V isolation voltage Lightning protection and anti-jamming design |
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| | Communication Interface | | |
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| | | | 12bit resolution, acquisition accuracy ±0.1% Sampled value output range: 0~4095 0-20mA and 4-20mA current signal resolution: 5 uA 0-5V voltage signal resolution: 1.25 mV 0-10V voltage signal resolution: 2.5 mV Temperature drift: 25ppm |
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| | | | Nominal power supply: DC24V Input range: DC10~30V Power consumption: ≤ 2W Protection function: anti-reverse connection |
| | power input | | |
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| | Module structure | | Shape structure: Adam module, 10+10-position pluggable terminal Installation method: DIN rail mounting |
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| | Dimensions | | Module part: 104mm × 72mm × 26mm (excluding terminal and rail seat) Maximum size: 124mm × 72mm × 45mm (including terminal and rail seat) |
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| | working environment | | Working temperature: -25 ~ +85 °C Ambient humidity: 10~90% RH (no condensation) |
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| 4 indicator description | |
| Indicator light | Name | colour | Description |
| PWR | Power indicator | green | Slow flashing: Power on, always on: Ready, fast flash: Restore communication configuration |
| TXD | Data transmission | red | send data |
| RXD | Data reception | yellow | Receive data |
5 Forced recovery of communication parameters factory configuration
When the communication parameters are forgotten, or the communication parameters are changed due to misoperation, in addition to the configuration software search module, the factory configuration of the forced recovery communication parameters can also be performed. The methods and steps are as follows:
(1) Ensure that the module has been powered off;
(2) Short-circuit (connect) the INT terminal (terminal 6) and VIN- terminal (terminal 10) with wires; (3) Power on the module, the module power supply light flashes twice and then flashes quickly; (4) Turn off the power , remove the short wiring; (5) the module is powered, the communication parameters of the module have been restored to:
Communication rate: 9600bps
Stop Bit: 1 bit check mode: no local address: 1
Warning: Short-circuiting the module in the unpowered state will not perform the above operation, and may cause permanent damage to the module!
6 terminal arrangement and description
| Terminal | Code | Name | Schematic |
| 1 | AI5+ | Analog 5 positive input | |
| 2 | AI5- | Analog 5 negative input | |
| 3 | AI6+ | Analog 6 positive input | |
| 4 | AI6/7- | Analog 6, 7 negative input | |
| 5 | AI7+ | Analog 7 positive input | |
| 6 | INT | Restore factory settings terminal | |
| 7 | 485A | RS485 data A | |
| 8 | 485B | RS485 data B | |
| 9 | VIN+ | Power input positive | |
| 10 | VIN- | Power input negative | |
| 11 | AI0+ | Analog 0 channel positive input | |
| 12 | AI0- | Analog 0 channel negative input | |
| 13 | AI1+ | Analog 1 positive input | |
| 14 | AI1- | Analog 1 negative input | |
| 15 | AI2+ | Analog 2 positive input | |
| 16 | AI2- | Analog 2 negative input | |
| 17 | AI3+ | Analog 3 positive input | |
| 18 | AI3- | Analog 3 negative input | |
| 19 | AI4+ | Analog 4 positive input | |
| 20 | AI4- | Analog 4 negative input | |
