GE IC660BBD101: Genius 8-Circuit Discrete I/O Block
Configurable 115VAC input/output block delivering flexible, intelligent field device interfacing for Genius I/O networks
The GE IC660BBD101 is an 8-circuit discrete I/O block from the Genius I/O product line, originally manufactured by GE Fanuc and now supported under Emerson Automation. Each of its eight identical circuits can be independently configured as either an input or an output, providing exceptional flexibility for interfacing discrete sensors and actuators to a Genius communications bus. The block operates at 93–132 VAC nominal 115 VAC and requires no separate block power supply, as control power is derived directly from the field wiring.
Key Specifications
Parameter Value
Product Line Genius I/O
Part Number IC660BBD101
I/O Circuits 8, independently configurable as input or output
Nominal Voltage 115 VAC
Operating Voltage Range 93–132 VAC
Frequency 47–63 Hz
Output Current (steady state) 2 A per circuit
Maximum Inrush Current 25 A peak (up to 2 cycles)
Block-to-block isolation: 1500 V
Input Filter Time Selectable: 10–100 ms
Communication Genius Protocol
Dimensions (H×W×D) 22.44 cm × 8.89 cm × 10.00 cm
Weight: 1.81 kg (4.00 lbs)
Functional Capabilities
Configurable I/O Flexibility. Unlike fixed-function I/O modules, the IC660BBD101 allows each of its eight circuits to serve as either an input or an output. This on-the-fly configurability simplifies spare-part inventory and allows a single block type to serve multiple application requirements within a Genius I/O system.
Low-Leakage Design. The block is specifically designated as a low-leakage I/O block, making it suitable for applications where minimal current leakage is critical—such as interfacing with sensitive solid-state sensors or circuits where false triggering from leakage current must be avoided.
Comprehensive Diagnostics. The IC660BBD101 provides extensive built-in diagnostics including overtemperature detection, failed switch identification, open-wire detection for tristate inputs, overload detection and shutdown, and no-load detection. Fault reporting can be enabled or disabled on a circuit-by-circuit basis, allowing technicians to focus on relevant fault conditions.
Electronic Fusing and Protection. Each circuit includes electronic fusing that trips within 5 ms if output current exceeds 30 A with the output on, or 20 A after two cycles. The circuit can be restored via a command from a handheld monitor or the CPU without replacing physical fuses.
Built-in Monitoring. Dedicated LEDs for each circuit indicate status: for outputs, an ON LED confirms the circuit has complied with the CPU command; for inputs, an ON LED indicates the terminal has reached threshold voltage. Block-level Unit OK and I/O Enabled LEDs provide overall operational status.
Application Context
The IC660BBD101 is designed for panel-mounted installation as a stand-alone remote I/O device on a Genius communications network. Its configurable circuits and comprehensive diagnostics make it well suited for:
Industrial process control: interfacing limit switches, pushbuttons, solenoids, and indicator lamps
Machine control panels: flexible I/O allocation where input/output mix varies by application
Legacy Genius system maintenance: drop-in replacement for existing installations requiring low-leakage I/O blocks
Remote I/O applications: reducing wiring runs by locating I/O near field devices
Compatibility Notes
The IC660BBD101 communicates via the Genius protocol and is compatible with Genius bus controllers such as the IC693BEM331. Configuration and monitoring can be performed using the IC660HHM501 handheld monitor. Note that this product line has transitioned from GE Fanuc to Emerson Automation support; verify firmware and configuration tool compatibility when integrating with existing systems. For new designs, evaluate current Emerson Genius I/O offerings; for maintenance and retrofit, the IC660BBD101 remains available through industrial automation surplus and remanufactured channels.
