GE IC670MDL644 Field Control Logic Fast Input Module

The IC670MDL644 24-volt DC positive/negative input module is a field control logic fast input module manufactured by GE Fanuc.

It provides a set of discrete inputs that can be driven by both positive and negative logic.

The IC670MDL644 24-volt DC positive/negative input module has 16 inputs,

separate LEDs for logic-side inputs and a "PWR" indication LED for monitoring power status.

The bus interface unit provides the power needed to drive the 5-volt logic, and the input devices require power from an external 24-volt DC power supply.

It also provides isolation ratings such as 250 volt AC continuous user input to logic isolation and 1500 volt AC user input to frame ground isolation for 1 minute.

The IC670MDL644 24-volt DC positive/negative input module has a parallel-to-serial converter.

This converts the data in the data buffer to a serial format that can be used with the Bus Interface Module.

When the Bus Interface Module is properly connected, the module's power LED indicates the power status.

The Bus Interface Module starts reading the processed and converted input data.

The Bus Interface Module has both positive and negative inputs. The positive input is used in order to receive the current from the input device.

The negative input is used to supply current to the input device.

Efficient field wiring of the IC670MDL644 input module can be performed using a terminal block with box terminals or isolated terminals.

The internal circuitry of the module is equipped with a network of resistors and capacitors to provide input thresholding and filtering.