GE Fanuc IC697HSC700 Series 90-70 High-Speed Counter Module

Functional Overview

The IC693MDL740 is a high-density discrete output module designed for the GE Fanuc Series 90-30 PLC system. This module provides 16 output points configured for negative logic (sinking) operation. The IC693MDL740 (Part Number: IC693MDL740) serves as the interface between the PLC’s control logic and field devices such as solenoids, motor starters, and indicator lights. By utilizing a sinking configuration, the module connects the load to the common ground (negative rail) when an output point is energized, making it ideal for systems standardizing on NPN-style interface logic.

Technical Specifications

The following parameters define the electrical limits and physical characteristics of the IC693MDL740:

• Output Type: Discrete Sinking (Negative Logic)

• Number of Points: 16 outputs (one group of 16)

• Rated Voltage: 12 to 24 Volts DC

• Operating Voltage Range: 12 to 30 Volts DC

• Maximum Load Current: 0.5 Amps per point (2.0 Amps maximum per common)

• Inrush Current: 2.0 Amps for 10 milliseconds

• Response Time: 0.5 milliseconds (maximum on/off delay)

• Internal Power Consumption: 110 mA at 5 VDC (from the backplane)

• Output Voltage Drop: 0.5 VDC maximum in the ON state

System Integration and Wiring

The IC693MDL740 features a removable front-facing terminal block that allows for simplified field wiring and rapid module replacement without disconnecting individual wires. Each of the 16 points is isolated from the backplane logic, though all points share a common power return within the module. To ensure equipment protection, it is recommended that users install external suppression (such as diodes) when driving inductive loads to prevent back-EMF spikes from damaging the internal switching transistors.

Hardware Diagnostics

The module is equipped with a high-visibility LED display at the top of the faceplate, organized in two rows of eight. these indicators provide real-time status of each output point, reflecting the state of the logic sent from the CPU. If a fuse is present (depending on the hardware revision), a dedicated "F" LED or specific diagnostic bits within the PLC software can alert the operator to a blown fuse condition or a loss of field-side power, significantly reducing troubleshooting time in the field.