ABB S800 I/O Analog Input Module



ABB S800 I/O Analog Input Module

System Overview

S800 I/O is a comprehensive distributed modular process I/O system that can communicate with higher-level controllers and PLCs through industry standard fieldbus. Its advantages lie in:

Wide compatibility: compatible with various process controllers and PLCs from ABB and other brands.

Cost effectiveness: Supports on-site installation, located close to sensors and actuators, reducing wiring costs.

High availability: With features such as "hot swappable" modules, online reconfiguration, and redundancy options, it helps maintain production operations and ensure revenue.

Model and core parameters of analog input module

The S800 I/O series includes six analog input modules: AI810, AI815, AI820, AI825, AI830/AI830A, and AI835/AI835A. The core parameters are compared as follows:

Features: AI810/AI815/AI820/AI825/AI830/AI830A/AI835/AI835A

Number of channels: 8/8/4/4/8/8

Input type: Single ended unipolar (current/voltage)/Single ended unipolar (current/voltage)/Differential bipolar (current/voltage)/Independent galvanic isolation (current/voltage)/3-wire RTD and resistance potentiometer/thermocouple (B, C, E, etc.) and linear range

Measurement range: 0 (4)... 20mA, 0 (2)... 10V, etc./0... 20mA, 0... 5V, etc./-20...+20mA, -10...+10V, etc./-20...+20mA, -10...+10V, etc. See Table 1 (covering multiple RTD temperature ranges)/See Table 2 (covering multiple thermocouple temperature ranges)

Accuracy: Maximum 0.1%/Maximum 0.1%/Maximum 0.1%/Maximum 0.1%/See Table 1 (varies by sensor type) Maximum 0.1%

Resolution: 12 bits/12 bits/14 bits+symbol/14 bits+symbol/see Table 1/15 bits

Scan execution time: 3.00 ms/3.00 ms/1.50 ms/1.50 ms/0.40 ms/0.40 ms

Maximum on-site cable length: 600 meters/600 meters/600 meters/600 meters/600 meters/600 meters

Working temperature range: 0~55 ° C (storage -25~70 ° C)/0~55 ° C (storage -25~70 ° C)/0~55 ° C (storage -25~70 ° C)/0~55 ° C (storage -25~70 ° C)/0~55 ° C (storage -25~70 ° C)/0~55 ° C (storage -25~70 ° C)

Dimensions (width x depth x height): 45mm x 97mm x 119mm (including connector 106mm deep)

/45mm x 97mm x 119mm (including connector 106mm depth)/45mm x 97mm x 119mm (including connector 106mm depth)/45mm x 97mm x 119mm (including connector 106mm depth)/45mm x 97mm x 119mm (including connector 106mm depth)/45mm x 97mm x 119mm (including connector 106mm depth)

Protection level: IP20/IP20/IP20/IP20/IP20/IP20/IP20

Key features and functions

Monitoring and status indication:

All modules support status indication for module errors, warnings, and channel errors, with some modules providing additional information through the PROFIBUS-DPV1 service.

The monitoring content includes internal power supply, checksum, watchdog, memory errors, etc. External errors such as open circuit, abnormal process power supply, etc.

Electrical characteristics:

Isolation: Most modules are group isolated (RIV=50V), and AI825 is group isolated (RIV=250V) to ensure electrical safety.

Common mode rejection ratio (CMRR): AI820 reaches 80dB, AI825, AI830/AI830A, AI835/AI835A reach 120dB, with strong anti-interference ability.

Overvoltage protection: Some modules support overvoltage protection, such as AI825 which supports 30V protection when voltage and overvoltage current are input.

Environment and Certification:

Compliant with multiple international standards such as IEC 61140, with CE mark, cULus, FM, CSA certification, etc., suitable for various industrial environments.

Resistant to corrosive atmosphere (ISA-S71.04 G2 level), suitable for environments with 5% to 95% non condensing humidity.

Application and compatibility

Terminal unit: Each module is adapted to different terminal units (such as TU810, TU812, etc.), with specific models listed in the "Module termination units" column of the table.

Communication: Supports communication with PROFIBUS through interfaces such as CI801 and CI840, with parameter bytes and update cycles varying depending on the module.