IC694MDL940 GE RX3i 16-Point Relay Output Module

Description

Product Introduction

The GE Fanuc IC694MDL940 is a 16-point relay output module for the RX3i PACSystems platform. It provides normally open relay contacts for controlling motor starters, solenoids, indicators, and other AC or DC field loads from the PLC backplane.

Its main value is load flexibility. A relay output card is the right choice when the panel has mixed voltage devices, when the output must handle AC, or when you want contact-style switching instead of a transistor output stage. That keeps retrofit work simpler and avoids unnecessary wiring changes.

Key Technical Specifications

Application Scenarios & The “Trench” Experience

A relay output module usually becomes important at the worst time. The line is already down, the starter does not pull in, and the technician is stuck proving whether the problem is the field device, the wiring, or the PLC card itself. In the field, the IC694MDL940 is the sort of spare that earns its shelf space.

• Manufacturing – Motor starter control – Used when the PLC must switch AC or DC starters directly.
• Process control – Indicator and solenoid outputs – Required for mixed-load discrete control.
• Packaging lines – Interlock and alarm outputs – Needed when contact-style switching is preferred.
• Retrofit support – Legacy relay replacement – Chosen when the cabinet needs a like-for-like spare.

Field case: a production cell started dropping a motor starter after intermittent contact wear on a relay output channel. The machine looked like it had a field wiring problem, but the module had simply reached the end of its useful life. Swapping in a verified IC694MDL940 brought the starter circuit back immediately and avoided a larger cabinet tear-down.

Transparency SOP: Quality Assurance & Testing

We don’t just ship boxes; we test them on actual GE racks.

• Inbound Inspection: Check label integrity, relay housing, connector pins, and signs of mechanical wear or tampering.
• Live Rig Testing: Install the module in a known-good RX3i rack and verify all 16 outputs.
• Electrical Parameter Checks: Confirm contact closure, load switching behavior, isolation, and current draw.
• Firmware Verification: Not firmware-driven, but hardware revision and relay response are documented.
• Final QC & Anti-static Packaging: Clean, function-test, and pack in ESD-safe materials before shipment.

IC694MDL940

IC694MDL940

The Veteran’s Tech Trap Guide

• ⚠️ Don’t confuse this with a transistor output module. This one uses relay contacts. It will behave differently under load.
• ❗ Respect the group limits. The module is 2 A per point and 4 A per common. Overload it and you will shorten contact life fast.
• ⚠️ No internal fuses. The module has no built-in fuse protection, so external protection matters.
• ❗ Check the suffix and revision. variants can be listed with revision letters, and the wrong assumption can waste a shift.

Frequently Asked Questions (FAQ for Conversion)

Q: Is hot-swappable?
A: No. Power down first. Pulling a relay output module live is asking for trouble.

Q: Can it switch AC and DC loads?
A: Yes. That is one of its main strengths.

Q: How many outputs does it have?
A: 16 outputs in four groups of four.

Q: What is the contact rating?
A: 2 A per point, with 4 A per common.

Q: Does it have fuses?
A: No. External protection is recommended.

Q: Why is it cheaper than OEM direct supply?
A: Because most available stock comes from surplus channels, not active production.

Q: Is it fake or refurbished?
A: The surplus market is mixed. Good sellers should provide test data, clear photos, and revision details before shipment.