Repair GE-Emerson IC655MDL533 Series Five Input Module

The GE-Emerson IC655MDL533 is a positive/negative logic input module with 64 circuits to connect to user input devices. It operates with a 5 or 12VDC power supply. The operating voltage of the inputs is 4.75 to 13.2VDC with a current rating of 2.5mA at 5V or 7.5mA at 12V. The device features 32 LEDs that indicate the status of the 32 inputs associated with one connector. The top 16 of these LEDs can also indicate the starting I/O address for the module when commanded through programming.

Field wiring connections from input devices are made to two 37-pin subminiature D-type connectors, mounted on the front of the module. One connector is used for two groups with 16 inputs in each group. The four groups are labeled A/B, C/D, E/F, and G/H. The pins in each group are labeled 1 to 8. Each group has a common connection, labeled C. The user must supply the source of 5 to 12 VDC power to reflect the state of the inputs to the module. All groups can be powered from a common source or different sources. The circuits can operate as positive or negative logic, depending on how the source voltage is connected to the module.