GE IC660BBD101 I/O Block – Low Leakage Input/Output

The GE IC660BBD101 provides digital I/O with minimal off-state current leakage. This low leakage I/O block serves GE Fanuc Genius distributed control networks. You can use it with sensitive input devices like solid-state sensors. The unit ensures reliable off detection even with high-impedance loads.

I/O and Electrical Specifications

The GE IC660BBD101 achieves off-state leakage below 0.1 milliamps on inputs. This low leakage I/O block operates from 12 to 24 VDC power supplies. You can connect sensitive sensors without false triggering. The unit provides 0.25 amp sourcing outputs for small pilot devices.

Physical Dimensions and Weight

This low leakage I/O block weighs 0.88 kg for rugged industrial mounting. The unit measures 152 mm tall by 114 mm wide. Its depth reaches 79 mm including the terminal block. You can mount the GE IC660BBD101 on a 35 mm DIN rail or directly to a panel.

Interface and Network Connection

A Genius bus connector (5-pin female) links the block to the network cable. The front panel includes two rotary switches for bus address setting (0 to 31). You will find 28 screw terminals for field device wiring and power. Two LED indicators show bus status and module health. Sixteen yellow LEDs display individual circuit status for inputs or outputs.

Energy Storage and Internal Circuitry

The GE IC660BBD101 stores minimal energy for signal conditioning. Small filter capacitors provide 110 µF of total storage at 24 VDC. The module does not contain any battery for configuration retention. Instead, it reads all address and mode settings from the rotary switches. Special low-leakage MOSFETs achieve the minimal off-state current specification.

Component Layout and Construction

A Genius bus controller ASIC handles all network communication tasks. Sixteen precision optocouplers provide isolation with low capacitance. You will find 72 resistors, 48 capacitors, and 8 integrated circuits on the board. The GE IC660BBD101 includes transient suppression for all I/O circuits. A metal shield covers the Genius transceiver section for electromagnetic noise reduction.

Operational Use and System Integration

Transitioning to this block solves false triggering issues with sensitive sensors. You can connect solid-state proximity sensors without external loading resistors. The block works with all Genius bus controllers for Series 90-30 or 90-70 PLCs. Use the GE IC660BBD101 for precision measurement, medical devices, or semiconductor equipment. For best results, terminate the Genius bus with 100-ohm resistors at both ends.