Description _____________________________________

The 115VAC Discrete Input Block (IC66*BBD110) is an intelligent, configurable module that provides an interface to 115VAC discrete
input sensors. The block has sixteen 115VAC circuits – two banks of eight circuits each.
Typical inputs to this block are contact closures from switches, pushbuttons, or limit switches. The block can be used with both 2-
wire and 3-wire proximity switch inputs. Control power for the block comes from the power line that supplies the inputs. No separate block power supply is needed.

Features

Block features include:

Selectable thresholds

Advanced diagnostics

Software Configurable Features

The 16 Circuit 115 VAC Input Block provides configurable detection of Open Wire and Shorted Wire faults. Selectable thresholds
extend the use of Open Wire and/or Shorted Wire diagnostics to circuits with many types of input devices and sensors.

There are separate On/Off thresholds for each group of eight inputs. On/Off thresholds are configurable from 25% to 85% of
the incoming line voltage, allowing the use of a wide variety of input sensors.

Optional Open Wire detection can be selected for individual inputs. The Open/Off threshold can also be configured at 25%
to 85% of the incoming line voltage. Separate Open/Off thresholds can be selected for each group of eight inputs.

Optional Short Circuit detection at 10% and 90% of the incoming line voltage can also be selected for individual inputs.
For most applications, the default thresholds and recommended resistor values are not changed.
Fault reporting can also be enabled or disabled circuit-by circuit.

IC660BBD025

Block Mounting

Genius I/O blocks are considered “open equipment” and therefore must be installed within a protective enclosure. They should be
located in an area that is clean and free of airborne contaminants. There should be adequate cooling airflow.
The block can be mounted right side up, or upside down. Leave at least 2 inches of space between blocks. Mount the block by drilling
two screw or bolt holes for 8-32 hardware. Position the block so that the notches in the upper and lower flanges line up with the mounting
holes. Mount the block using 8-32 screws. Use star washers to provide ground integrity.