GE Fanuc IC693MDR390 8-Input 8-Output Relay Module

Product Overview

The GE Fanuc IC693MDR390 operates as a high-density combination discrete input/output interface within the classic Series 90-30 PLC rack infrastructure. This single-slot module merges 8 isolated 24 VDC digital input channels with 8 independent Form A mechanical relay outputs. By integrating both signal ingestion and load actuation into one hardware footprint, the card minimizes backplane consumption and simplifies field terminal routing. Heavy machinery builders, municipal utility operators, and compression station engineers deploy this mixed-signal processor to run decentralized automation loops like valve position feedback monitoring, pump sequencing, and localized safety alarms.

Technical Specifications

This 100% brand new, original GE Fanuc Series 90-30 module delivers factory-sealed automation reliability. All electrical parameters use standard ASCII formatting.

• Model Code: IC693MDR390

• Product Series: Series 90-30 PLC

• Product Type: Combination Discrete Input / Relay Output Module

• Total Input Capacity: 8 channels (24 VDC nominal, operating range -30 to +32 VDC)

• Digital Input Current Draw: 7.5 mA at 24 VDC

• Input Transition Response Time: Approx. 7 milliseconds

• Total Output Capacity: 8 channels (Form A, Normally Open contacts)

• Output Channel Configuration: Two isolated groups of four outputs each

• Output Switching Voltage Range: 5 to 30 VDC or 5 to 250 VAC (47-63 Hz)

• Maximum Continuous Load Current: 2 Amperes per channel, 4 Amperes maximum per common

• Minimum Operational Load Current: 10 mA

• Peak Output Inrush Rating: 5 Amperes maximum

• Relay Output Response Profile: 15 ms maximum Turn-On delay, 15 ms maximum Turn-Off delay

• Relay Lifecycles (Resistive Load): 200000 cycles at 2 A, 400000 cycles at 1 A, 800000 cycles at 0.5 A

• Galvanic Isolation Boundaries: 1500 Vrms between field circuits and backplane logic, 500 Vrms between relay groups

• Internal Backplane Current Demand: 80 mA at 5 VDC (all I/O active), 70 mA from 24 VDC relay bus (all outputs on)

• Integrated Circuit Protection Hardware: Built-in RC snubbers per relay contact, 5A fast-acting fuse (5 x 20 mm)

• Visual Diagnostics: 16 individual channel status LEDs, plus integrated fuse health monitoring

• Operational Temperature Range: -25 to +70 degrees Celsius

• Storage Temperature Envelope: -40 to +85 degrees Celsius

• Physical Proportions: Single-slot standard 90-30 module profile

• Net Weight: 0.31 kg (0.66 lbs)

• Total Shipping Pack Weight: 2.5 kg

• Global Regulatory Compliance: CE, UL, CSA compliant

Engineering Advantages

• Halves Chassis Baseplate Footprint via Dual-Role Architecture: Standard automation retrofits often run out of physical expansion slots, forcing engineers to buy costly secondary baseplates and communication booster modules. The IC693MDR390 solves this spatial constraint by stacking 8 digital inputs and 8 relay outputs onto a single-slot card. This mixed design reclaims 50% of your rack space, allowing full implementation of local sensor loops and valve drivers inside compact terminal boxes.

• Drives High-Current AC Loads Directly Without Interposing Relays: Low-voltage solid-state transistor cards require external auxiliary relays to step up voltage signals before they can drive large plant accessories, adding extra wiring joints and failure points. The IC693MDR390 houses heavy-duty Form A mechanical relays that switch up to 250 VAC or 30 VDC at 2 Amperes continuously. This raw switching capability allows the card to command large contactors, warning sirens, and industrial solenoids directly from the main I/O terminal strip.

• Locks Out Inductive Kickback Using Advanced Dual-Layer Insulation: Rapid switching of large magnetic inductive loads generates severe high-voltage back-EMF transients that can degrade silicon gates or crash the central PLC processor. The IC693MDR390 deploys a dual insulation boundary featuring 1500 Vrms optical isolation between the field side and the backplane, plus 500 Vrms isolation between the separate relay groups. This configuration confines spikes to the external terminals, shielding the sensitive CPU logic bus from corruption.

• Suppresses Contact Arcing with Integrated RC Snubber Circuits: Inductive arcs across opening mechanical relay contacts cause rapid carbon pitting and premature contact welding, which leads to permanent channel failure. The IC693MDR390 integrates matching resistive-capacitive (RC) snubber networks across every single contact channel. These onboard filters absorb the high-energy electrical discharge during contact breaking, smoothing out current spikes to extend the physical contact lifecycle up to 800,000 cycles under low-power loads.

FAQs

• Q: Is this IC693MDR390 module a brand new factory item, and how is it supported given its lifecycle status?A: Yes. We supply this product strictly as a 100% brand new, completely original, and authentic factory item matching original GE Fanuc manufacturing standards. The module ships in its original unopened factory packaging with pristine contact pads and clear serial numbering. While the manufacturer has discontinued the 90-30 series lifecycle, your procurement includes our complete 2-year comprehensive technical and replacement warranty to fully secure your plant operations.

• Q: Can I mix different voltages across the output channels of this module?A: Yes, but you must respect the internal grouping boundaries. The 8 relay outputs sit in two isolated groups of four channels, each governed by its own independent common terminal. This allows you to run 24 VDC pilot signals through the first group of four contacts while simultaneously routing 120 VAC or 240 VAC power loops through the remaining group of four contacts on the same card.

• Q: What is the purpose of the onboard 5A fuse, and does it protect individual channels?A: The integrated 5A fast-acting fuse (5 x 20 mm) serves as an overall overcurrent safety barrier for the internal circuitry rather than isolating individual channels. If an external short circuit across a common line exceeds safe limits, the fuse blows to prevent terminal trace vaporization. You can monitor the health of this protection element directly via the front panel diagnostic LEDs. Ensure you disconnect rack power before performing a fuse replacement.