GE IC694MDL632 – 32‑Point 24 VDC Discrete Input Module for PACSystems RX3i

The GE IC694MDL632 is a compact 32‑point 24 VDC discrete input module designed for PACSystems RX3i racks. From my experience, it’s a go‑to when you want dense DC input capacity with straightforward wiring and reliable status diagnostics. You can wire it for positive or negative logic, which typically simplifies retrofits where field wiring conventions vary between lines or plants.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Delivery: In‑stock items usually ship within 1 week; no more than one month at the latest
• Payment: 50% advance payment, full payment before delivery
• Express options: FedEx, UPS, DHL

Key Features

• 32 DC inputs (24 VDC nominal): High channel density for compact panels and I/O consolidation.
• Positive/negative logic wiring: Supports sourcing or sinking field devices, which in many cases reduces rewiring effort.
• Per‑channel status LEDs: Quick troubleshooting at the cabinet—one thing I appreciate when commissioning.
• Software‑configurable input filtering: Typically used to debounce contacts and handle noisy signals common in industrial environments.
• PACSystems RX3i rack compatibility: Installs in standard RX3i baseplates and communicates via the backplane—no external comms needed.
• Field power isolation: Designed to isolate logic and field circuits for improved noise immunity and safety.

Technical Specifications

Related or Supporting Products

• IC694TBB032 / IC694TBC032 terminal blocks: Matching 32‑point barrier or box‑style terminal blocks for clean, serviceable wiring.
• IC695CHS007 / IC695CHS012 RX3i baseplates: Compatible backplanes to host the module; choose slot count based on expansion needs.
• IC695CPU3xx CPUs: RX3i controllers commonly paired with IC694 I/O; Proficy Machine Edition is typically used for configuration.
• IC694MDL634 (16‑pt 24 VDC input): Lower point‑count alternative if you prefer more commons and simpler wiring per group.
• IC693MDL632 (Series 90‑30 equivalent): Similar I/O characteristics for legacy 90‑30 systems—handy for cross‑reference during migrations.

Installation & Maintenance

• Cabinet & environment: Install in a ventilated industrial cabinet (IP54 or better is common). Keep ambient within 0–60°C, non‑condensing humidity.
• Rack & slotting: Mount in an RX3i rack; assign I/O addresses by slot as per your controller configuration. Power down the rack when adding or removing modules.
• Wiring: Use 24 VDC field power. Choose sinking or sourcing wiring to match sensors. Separate high‑voltage and signal wiring; keep returns local to each group for best noise immunity.
• Shielding & noise: For long runs or noisy areas, twisted‑pair and shielded cable helps. Tie shields at a single point to avoid ground loops.
• Configuration: In Proficy Machine Edition, set input filters to suit device response. You might notice shorter filters help with fast sensors, while longer filters tame contact bounce.
• Maintenance: Periodically check terminal tightness, clean dust with dry air, and verify LED status against PLC diagnostics. Firmware updates are handled at the CPU level; the I/O module does not typically require direct updates.
• Safety: De‑energize field circuits before servicing. Confirm proper polarity on 24 VDC supplies to avoid unexpected input states.

Quality & Certifications

• Certifications: CE, UL, cUL, and RoHS compliance are typical for RX3i discrete I/O modules.
• Manufacturer policy: GE/Emerson provides standard product quality assurance; warranty support varies by channel.
• Our coverage: 365‑day warranty from shipment date as stated above.

Practical note from commissioning: with mixed sensor types on a line, the IC694MDL632’s positive/negative logic wiring option has often saved time—no re‑spec of sensors, just match the wiring scheme and set input filters appropriately.