GE PACSystems RX3i IC694MDL230 – 120 VAC Discrete Input Module for Reliable AC Sensing

The GE PACSystems RX3i IC694MDL230 is a discrete input module that, in most cases, is used for 120 VAC signal sensing at 50/60 Hz. It slots into an RX3i rack and gives you dependable feedback from limit switches, contactors, and plant devices that run on line voltage. One thing I appreciate is the straightforward wiring and group isolation—it keeps noise down and makes troubleshooting a lot easier on busy panels. If you’re modernizing a Series 90-30 install to RX3i, this module typically feels familiar while offering the RX3i backplane performance and diagnostics you expect.

Order Placement Process and Guarantees

• Warranty: 365 days
• Lead time: 1 week when in stock; no more than one month at the latest
• Payment: 50% advance; full payment prior to delivery
• Shipping: FedEx, UPS, DHL (express available)
• Packaging: Anti-static protection and shock-absorbing materials for transit safety

Key Features

• 120 VAC discrete inputs (50/60 Hz): Designed for typical plant power sensing, ideal for contactor and limit-switch feedback.
• Compact RX3i form factor: Uses a single slot in the PACSystems RX3i rack for high-density control cabinets.
• Group isolation: You might notice reduced cross-talk and better resilience in noisy environments due to group-isolated inputs.
• Backplane powered: No separate logic supply—module power is provided through the RX3i rack.
• Simple field wiring: Screw-clamp terminal interface streamlines installation and maintenance.
• Diagnostics support: Front LEDs typically provide per-point status, which speeds up commissioning and fault finding.

Technical Specifications

Where it Fits Best

From my experience, the IC694MDL230 is a solid choice in facilities that rely on 120 VAC signaling: motor starter feedback, door interlocks, valve limit switches, and older process skids. A packaging line integrator told us they prefer this module when tying in legacy equipment—less need for interface relays, and commissioning goes faster because the LED status for each point is obvious at a glance.

Related or Supporting Products

• IC694MDL231 / IC694MDL241 (RX3i Discrete Input variants): Alternative voltage or channel-count options; useful if you need DC inputs or different densities.
• IC694MDL6xx (RX3i Discrete Output family): Pair with AC/DC output modules when you need both sensing and actuation in the same rack.
• IC695CHS0xx (RX3i racks): Choose slot count based on expansion needs; you might notice better cable management in 12/16-slot frames.
• IC695PSD0xx (RX3i Power Supplies): Select capacity based on total I/O load and CPU requirements.

Installation & Maintenance

• Cabinet environment: Install the RX3i rack in a clean, dry enclosure (IP54 or better is typical), with ambient 0–60°C and humidity within spec.
• Ventilation: Provide airflow around the rack; avoid mounting next to heat sources or VFDs without shielding.
• Wiring: Use appropriately rated conductors for 120 VAC. Separate high-voltage and low-level I/O wiring; keep AC inputs away from fast-switching power lines.
• Grounding: Bond cabinet ground properly; use shielded cable where noise is expected and terminate shields at one end.
• Commissioning: Verify input presence and phase using the front LEDs before enabling logic. You might notice diagnostics speed up start-up checks.
• Routine care: Quarterly check for loose terminals, dust buildup, and signs of oxidation; clean with dry air. Keep firmware for the RX3i CPU updated when applicable.
• Safety: De-energize field circuits before servicing; lockout/tagout in accordance with site procedures.

Quality & Certifications

• Manufactured to GE quality standards for PACSystems RX3i
• CE and UL/cUL listings; RoHS compliant in many cases
• 365-day warranty from shipment

If you’re standardizing on 120 VAC inputs or updating a mixed-voltage panel, this module seems to be a practical fit. Send over your rack map and point count, and we’ll double-check compatibility and available stock so you can lock schedules with confidence.