Allen-Bradley 1756-IF6CIS | ControlLogix Analog Input Module

Overview

The 1756-IF6CIS from Allen-Bradley is a ControlLogix analog input module with six isolated current-sourcing channels. Each channel accepts signals from 0 to 20 mA and converts them into digital data using Sigma-Delta conversion. This enables precise process control and monitoring in HMI, SCADA, and PID applications.

Compatibility

The 1756-IF6CIS requires removable terminal blocks such as 1756-TBCH or 1756-TBS6H for proper wiring. It integrates seamlessly into ControlLogix systems, providing real-time analog input scanning and supporting advanced process control algorithms.

Electrical Specifications

The 1756-IF6CIS features 16-bit resolution, equivalent to 0.34 µA per bit, and supports integer mode (left-justified, 2’s complement) or IEEE 32-bit floating-point data formats. It draws 250 mA at 5V and 275 mA at 24V from the backplane and dissipates a maximum of 5.1 Watts at 60°C. Configurable high, low, and rate alarms are available for each input channel.

Features

The 1756-IF6CIS provides digital filtering in floating-point mode to smooth signal noise. Wire-off detection alerts users to disconnected inputs, improving system safety and reliability. Real-time sampling ensures accurate and timely analog data conversion for all six channels.

Physical Specifications

The module measures 284 × 194 × 69 mm and weighs 0.79 pounds. Its compact design allows efficient installation in ControlLogix racks, conserving space while maintaining easy access for wiring and maintenance.