Siemens SIMATIC S7-200 SMART High-Density RTD Input Module

Siemens SIMATIC S7-200 SMART High-Density RTD Input Module About

The Siemens 6ES7288-3AR04-0AA0 is an active, high-performance SIMATIC S7-200 SMART thermal resistance expansion module (SM AR04). It is engineered to deliver high-density, accurate temperature tracking for manufacturing plants and process lines. Doubling the measurement capacity of standard thermal cards, this 45mm-wide expansion module adds four analog inputs explicitly optimized for Resistance Temperature Detectors (RTD) as outlined on Maan Electro Controls.The module captures tiny temperature fluctuations with an impressive 15-bit plus sign resolution (16-bit ADC architecture). It natively supports 2-wire, 3-wire, and 4-wire configuration paths shown on Turll, cleanly processing global sensor styles such as Pt100, Pt200, Pt500, Pt1000, Ni100, and Ni120, alongside raw resistance boundaries (150, 300, 600). Housed in an IP20 shell for standard DIN rail layouts, it operates via a 24V DC line with an ultra-efficient 1.5W power footprint. It incorporates integrated diagnostic alarms for short circuits and sensor wire breaks.