IC697MDL254 GE DISCRETE INPUT MODULE 48VAC 32 POINT FOUR ISOLATED GROUPS OF 8 POINTS EACH

The IC697MDL254 is a discrete input module developed by GE Fanuc for integration with the Series 90-70 Programmable Logic Controller (PLC) product line. Engineered for industrial control applications, this module combines flexible input configuration with reliable performance to support diverse sensing and switching tasks.

At its core, the module features 32 input points organized into four independent groups of 8 points each—a design that enables each group to connect to a separate phase of an AC power supply, enhancing flexibility in power system integration. It operates at a rated voltage of 48 Volts AC, with resistive inputs that comply with IEC standard current-voltage Type 1 characteristics, ensuring seamless compatibility with a wide range of proximity switches.

In terms of electrical performance, the IC697MDL254 draws 0.3 Amperes (A) of current from the 5-Volt DC backplane bus for its own operation. The input circuit is optimized for stable switching: it requires approximately 10 milliamps (mA) of current in the on-state to ensure reliable activation of connected devices, while tolerating up to 2 mA of leakage current in the off-state without false triggering—this balance guarantees consistent operation even in environments with minor electrical interference.

User-friendly design and security features are central to the module’s functionality. Individual LED indicators are provided for each input point, offering real-time visual feedback on the on/off status of every channel. A mechanical keying mechanism serves two critical purposes: it prevents incorrect replacement of modules by ensuring only compatible module types can be installed in a specific slot, and it blocks unauthorized substitution of modules in designated positions—enhancing system security and maintenance accuracy.

Configuration is simplified through intuitive, hardware-independent settings: input and output references are fully user-configurable without the need for DIP switches or jumpers. For setup and programming, the module supports two primary methods: the MS-DOS configuration function, and dedicated programming software installed on a host device (compatible with Windows operating systems). This versatility ensures adaptability to different user workflows and system environments.

The IC697MDL254 exhibits broad compatibility with industrial switching devices, including limit switches, pushbuttons, selector switches, and 2-wire or 3-wire electronic switches. This wide-ranging compatibility, combined with its robust electrical performance, flexible grouping design, and user-centric features, makes it a dependable solution for discrete input monitoring in Series 90-70 PLC systems across various industrial sectors.