In the fast-paced world of industrial automation, the ABB AI625 stands out as a rugged, high-performance Analog Input Module designed to deliver accurate data acquisition and seamless integration in distributed control systems (DCS) and process automation networks. Engineered for reliability and versatility, this module is a cornerstone of ABB’s S600 I/O series, supporting critical applications in industries such as oil and gas, power generation, and smart manufacturing. With its 16-channel architecture and 12-bit resolution, the AI625 ensures precise monitoring of analog signals (4–20 mA), making it ideal for real-time process control and predictive maintenance strategies.

Label	Specification
Model Number	AI625
Brand	ABB
Type	Analog Input Module (S600 I/O Series)
Input Voltage	24V DC (±20%)
Operating Temperature	-20°C to +60°C (non-condensing)
Communication Methods	RS-485, Modbus RTU
Mounting	DIN rail (TS 35/7.5 or TS 35/15)
Weight	1.225 kg (2.70 lb)
Certifications	CE, UL, RoHS (exempted from certain EU directives)
Dimensions	40 mm (W) x 273 mm (H) x 252 mm (D)
IP Rating	IP20 (indoor use with dust protection)
Protocols Supported	HART, Modbus RTU

The ABB AI625 excels in demanding industrial environments, offering robust performance and ease of integration. Its 16-channel design with galvanic isolation ensures reliable signal conditioning even in high-noise settings, while a common mode voltage (CMV) tolerance of 50V and a common mode rejection ratio (CMRR) exceeding 100 dB shield against interference from external sources . The module’s 100Ω shunt resistor optimizes current loop stability, critical for maintaining accuracy in 4–20 mA applications such as pressure, temperature, and flow monitoring.

• ACP71 – A PROFIBUS communication card that expands multi-protocol capabilities for complex control networks .
• ACM71 – An Ethernet communication card for high-speed data exchange with HMIs and cloud-based platforms.
• AI623 – A compact alternative with 8 channels, ideal for space-constrained environments.
• SAI533-H33 – An analog I/O module that pairs with the AI625 for precise sensor and actuator control.
• S800 I/O Series – Complementary modules for distributed control systems requiring redundancy and high availability.

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