GE Fanuc Digital Output Modules Series 90-30 IC693MDL940

The GE Fanuc IC693MDL940, also cataloged as the IC693MDL940 Relay Output Module, operates as a dedicated hardware component for discrete load switching within Series 90-30 PLC platforms. It translates internal logic state registers into physical contact closures via a parallel backplane bus interface to control external pilot devices, contactors, and indicators.

Hardware Specifications

Backplane Bus Communication Velocity and Density Scaling

This module interfaces directly with the system backplane to achieve optimized backplane bus communication velocity during discrete logic updates. The 16 physical points are organized into four separate isolated groups of four outputs each, facilitating efficient high I/O density scaling within a single baseplate slot footprint. Each group features an independent common circuit path, enabling the deployment of varying voltage potentials and polarities across adjacent banks. Onboard memory layout registers synchronize with host configuration parameters during initialization, allowing direct cross-compatibility with system flash firmware across standard multi-rack architectures.

Frequently Asked Questions

Q: Does the IC693MDL940 support active hot-swap operations under backplane power?

A: No. The Series 90-30 platform does not feature hot-swap capability. Removing or inserting the module while the backplane power supply module is energized can induce arc damage on the data traces and disrupt the local bus timing logic.

Q: Are there internal suppression components installed on the contact points of this module?

A: No. The mechanical contact outputs do not incorporate internal snubber or suppression networks. External suppressors or freewheeling diodes must be wired directly across inductive field loads to prevent high-voltage transient degradation of the physical contacts.

Q: What are the backplane power load restrictions when calculating total slot allocation?

A: The module demands 7 mA from the 5 VDC logic bus and 135 mA from the 24 VDC relay drive bus. Total backplane power calculations must confirm that the power supply rating of the chassis can sustain these currents when all 16 relays are concurrently energized.

Field Installation Guidelines

• Chassis Slot Placement: Align the module with the intended slot guides on the Series 90-30 baseplate and apply even perpendicular pressure until the rear connector seats into the backplane. Secure the lower latch mechanism.
• Wiring Configurations: Wire field connections to the removable terminal block using maximum 14 AWG conductors. Separate low-voltage DC signals from high-voltage AC lines by running them in distinct physical wireways.
• Terminal Screws Torque: Tighten all terminal terminal block screws to a standard torque specification of 0.5 Nm to prevent high-resistance connection points.
• Shield Ground Maintenance: When switching inductive circuits near sensitive instrumentation, ensure the external enclosure panel maintains low-impedance connection continuity to the primary earth ground bus.