IC693MDL940 Series 90-30 Relay Output Module GE Fanuc

Overview

The IC693MDL940 is a high-density 16-point relay output module designed for the GE Fanuc (Emerson Automation) Series 90-30 programmable logic controller family. Built to interface high-power field actuators directly with low-voltage PLC logic, this discrete output card delivers dry-contact switching versatility across both AC and DC load circuits.

Organized into 4 isolated output groups with 4 relay channels per group, the IC693MDL940 accommodates operating voltages from 5 to 30V DC and 5 to 250V AC (50/60 Hz). Each contact rating supports up to 2.0 Amperes resistive load per point (4.0 Amperes max per common line), offering robust isolation between field voltage variations and internal backplane logic.

Engineering Specifications

The operational and mechanical metrics below are categorized using MECE principles to facilitate straightforward engineering review.

• Brand / Manufacturer: GE Fanuc (Legacy) / Emerson Automation (Current)
• Catalog Number: IC693MDL940
• Product Series: Series 90-30 PLC System
• Module Type: Discrete Relay Output Module (NO Contacts)
• Total Output Channels: 16 Points
• Group Configuration: 4 Isolated Groups (4 Output Contacts per Common)
• Nominal Voltage Rating: 24V DC / 120/240V AC
• DC Operating Range: 5 to 30V DC
• AC Operating Range: 5 to 250V AC (50/60 Hz)
• Maximum Load Current per Point: 2.0 Amperes resistive
• Maximum Load Current per Common: 4.0 Amperes total
• Minimum Load Current: 10 mA (required for reliable contact cleaning action)
• Maximum Inrush Surge Current: 5.0 Amperes peak
• Relay Response Time: 15 ms maximum (both On delay and Off delay)
• Isolation Protection: Group-to-group and channel-to-backplane optical isolation
• Status Indicators: Individual LED indicators per output channel
• Baseplate Slot Location: Occupies 1 slot in any standard 5-slot or 10-slot baseplate

Wiring & Installation Guidelines

Adhering to correct field wiring practices prevents premature mechanical contact wear and backplane signal corruption.

• Turn off system supply power before seating or extracting the IC693MDL940 card from the chassis.
• Align the circuit board module with guide slots and firmly press until top and bottom latches click into place.
• Group field power feeds according to circuit requirements, taking care not to exceed 4.0 Amperes per common terminal.
• Connect inductive AC or DC loads using RC snubbers or flyback suppressors wired directly across load terminals.
• Ensure field wiring gauge matches terminal block screw specs, stripping insulation cleanly without nicking conductors.
• Verify that the total load current on any single contact remains at or above 10 mA to guarantee proper contact wipe.

Field Diagnostics & Protection Limits

The IC693MDL940 features optical isolation barriers that separate high-voltage field wiring from backplane microprocessors.

Front-panel LED status indicators display real-time logic states for all 16 channels, making visual verification straightforward during commissioning. Mechanical relay contacts absorb transient inrush spikes up to 5.0 Amperes, while individual group commons isolate distinct voltage sources across the same module.

Target Equipment & Field Applications

Controls engineers specify the IC693MDL940 across industrial plants requiring flexible switching of mixed-voltage devices.

Typical target equipment includes solenoid valves, motor starter contactor coils, alarm annunciation horns, interposing relay banks, and indicator lights. Its dual AC/DC capability makes it well-suited for water processing, material handling conveyors, HVAC plant management, and automated packaging lines.

Global PLC Spare HUB's Insight & Field Experience

Our control specialists frequently audit legacy Series 90-30 hardware in high-duty industrial environments. The IC693MDL940 offers remarkable flexibility, but contact longevity depends heavily on suppressing inductive inductive kickback.

In a recent field call at a wastewater pumping station, an engineering team reported premature contact welding on channels controlling 120V AC solenoid valves. The inductive voltage spikes during de-energization were causing contact arcing. Fitting metal-oxide varistors (MOVs) across the AC valve coils suppressed inductive flyback voltage and eliminated relay contact pitting. We strongly advise placing RC snubbers across AC inductive loads and flyback diodes across DC loads to maximize contact service life.

System Selection & Integration Guidance

Matching output module specifications to actuator electrical characteristics prevents system downtime during operation.

Select the IC693MDL940 when controlling loads that operate across different voltage levels or require dry-contact relay action. If your system requires high-speed electronic switching without mechanical wear, evaluate solid-state transistor cards like the IC693MDL740 instead. Always verify that total continuous current drawn through each common terminal does not exceed 4.0 Amperes.

Delivery Terms & 12-Month Hardware Warranty

Every module is sealed inside antistatic protective packaging and shipped in heavy-duty cartons lined with custom foam padding.

We back each unit with a complete 12-month hardware replacement warranty covering contact execution and component reliability. Orders process rapidly with dispatch within 24 to 48 hours via leading international couriers including FedEx, UPS, or DHL.

Frequently Asked Questions (FAQ)

Can individual channels on the IC693MDL940 switch different voltage levels?

Yes, because the module is divided into 4 separate isolated groups, each group can operate on a distinct AC or DC voltage supply.

What is the maximum response time for contact switching?

Both the turn-on delay and turn-off delay times are rated at a maximum of 15 milliseconds.

Why is there a minimum load current rating of 10 mA per point?

A minimum current flow of 10 mA ensures sufficient electrical energy to clean oxidation off internal mechanical relay contacts during switching.

What happens if a field load draws more than 4 Amperes through a single common terminal?

Exceeding 4 Amperes per common can cause thermal overheating of internal board traces, leading to trace failure or module damage.

What express shipping carriers are used to deliver emergency orders?

Orders process rapidly and ship within 24 to 48 hours using global express carriers such as FedEx, UPS, or DHL.

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