Allen-Bradley 1756-IR6I Isolated RTD Input Module

The Allen-Bradley 1756-IR6I ControlLogix Isolated RTD Input Module provides six isolated Pt RTD inputs for ControlLogix systems, enabling direct connection of PT100 RTDs with channel-to-channel isolation for improved signal integrity. Each input is isolated from the backplane and from each other, with a continuous isolation voltage rated at 250 V, and it uses a 20‑pin interface for RTD connections via removable terminal blocks. The module is designed for ControlLogix I/O backplanes and supports six RTD channels, making it ideal for temperature monitoring across multiple points in industrial processes, machinery, HVAC, or environmental control applications. Environmental and electrical specifications include an operating temperature range of 0 to 60 °C (32 to 140 °F), non-operating range of -40 to 85 °C (-40 to 185 °F), and 5 to 95% noncondensing humidity, with 2 g vibration (10–500 Hz) and 30 g operating shock (50 g nonoperating). Electrical immunity and emissions meet IEC 61000 standards, including ESD up to 6 kV contact/8 kV air, radiated immunity around 10 V/m across key bands, and surge/transient ratings on shielded signal ports. The IR6I is commonly deployed where multiple RTD measurements must be isolated from each other and from the shared power rails, providing reliable temperature data for precision control, process optimization, and safety-critical monitoring, and it pairs with Rockwell’s 1756-TBNH or 1756-TBSH RTD terminal blocks for secure field wiring.