The GE-Emerson IC670MDL241 Field Control Discrete Input Module uses power from the power supply in the bus interface unit (BIU). A separate external 240VAC power supply is needed to power each isolated group of input devices. Module inputs respond to voltage levels from 0 to 265VAC.
Individual logic-side LEDs, visible through the transparent portion of the module top, indicate the on/off status of each input. The PWR LED is on when field and backplane power are present.
Intelligent processing for this module is performed by the BIU or elsewhere in the system. This includes configuring features such as input defaults and fault reporting. The module has 8 bits (one byte) of discrete input data. A BIU is required to provide this input data to the host and/or local processor.