The GE Fanuc IC660BBD025 is a 32-circuit Sink I/O Block designed to interface controllers with devices that transmit or accept binary signals in 5/12/24 VDC applications. This intelligent module is compatible with both 2-wire and 3-wire proximity switches, as well as a variety of other input devices. For applications requiring current supply to output devices, the Source Block IC660BBD024 is recommended. Each I/O circuit may be configured for input, output, or output with feedback, equipped with built-in protection to safeguard driver circuits from potential short circuits due to wiring errors. Key configurable features include Output Pulse Test capability, Input Filter Time, CPU Redundancy type, Output Hold behavior, and integration readiness as a Bus Switching Module control. The IC660BBD025 supports a maximum steady-state load of 0.5 Amps under normal operating conditions, with diagnostics to monitor outputs and verify actual switch states against commanded states. Installation considerations necessitate adequate cooling, proper grounding, and the use of protective cases to prevent contamination. It is imperative to wire power disconnects to ensure simultaneous removal of block power and input power, preventing unexpected power-up during active input conditions. Configuration and monitoring can be performed using a handheld monitor, alongside built-in LEDs for quick status checks.

Technical specifications include support for block-to-block isolation, a nominal voltage of 5, 12, or 24 VDC, and an isolation voltage rating of 850 volts. The operational voltage range is 4.9 to 5.3 VDC or 10 to 30 VDC, with a total of 32 input/output points per common.