S20-AI-4-I

The Bosch Rexroth Indramat S20-AI-4-I module is a high-precision analog input device within the S20 IndraControl Modules family, engineered for modern industrial automation applications. It features 4 differential analog input channels capable of accurately interpreting standard industrial current signals of 0 to 20 mA and 4 to 20 mA. With a native 16-bit resolution, the S20-AI-4-I ensures true signal fidelity and repeatability in process monitoring and closed-loop control systems. The module incorporates galvanic isolation of 300 V rms between each input channel and the internal bus or power system to mitigate the effects of electrical noise and ground loops. Rated for a 24 VDC power supply, it balances high performance with a compact footprint and low energy consumption.

In terms of critical technical specifications, the S20-AI-4-I employs an A/D (Analog to Digital) conversion type to preserve signal integrity across its 4 input channels. Each channel presents an input impedance of 50 Ω, optimizing compatibility with a wide range of industrial transmitters and sensors. The module operates on a 24 VDC power supply with a nominal power consumption of 1.2 W, reducing the thermal load on control cabinets. It meets international safety requirements with CE and UL approvals and features a robust isolation rating of 300 V rms between channel and bus/power domains. The overall form factor is 120 x 50 x 70 mm, enabling space-efficient installation on a standard DIN rail.

Operational performance is maintained across a broad environmental envelope, with an operating temperature range of -20 °C to +60 °C and a storage temperature range of -40 °C to +85 °C. The module’s galvanic isolation and low noise susceptibility ensure stable data acquisition even in electromagnetically harsh environments. With its 16-bit resolution and high common-mode rejection, the S20-AI-4-I delivers consistent, drift-free measurements over long duty cycles. The DIN rail mounting system simplifies field deployment and replacement, while its rugged design guarantees extended service life under continuous industrial operation.

Designed for seamless system integration, the S20-AI-4-I module interfaces directly with S20 IndraControl PLCs and motion controllers, enabling real-time data exchange for advanced automation tasks. Its compatibility with standard industrial sensors, transmitters, and actuators makes it ideal for process control, energy management, and manufacturing execution systems. Engineers benefit from pre-configured bus coupler compatibility and straightforward wiring via industry-standard connectors. The combination of high isolation, precision measurement, and certified safety approvals positions the S20-AI-4-I as a key component in distributed control architectures, batch processing, and continuous monitoring applications.