GE IC694MDL930 – 32‑Point 24 VDC Discrete Input Module for PACSystems RX3i

The IC694MDL930 is a workhorse 32‑channel 24 VDC input module for PACSystems RX3i. From my experience, it’s the go‑to choice when you need dense, reliable digital inputs in tight cabinets—think packaging lines, conveyor systems, water/wastewater plants, or mixed-sensor machine cells. You might notice that it supports both positive and negative logic, which typically makes wiring simpler whether your field devices are PNP or NPN. Individual channel status LEDs help maintenance teams spot a tripped sensor at a glance, and the four isolated input groups usually keep noise where it belongs.

Order Placement Process and Guarantees

• Warranty: 365 days
• Delivery: 1 week for in‑stock; no more than one month at the latest
• Payment: 50% advance payment; full payment prior to delivery
• Express options: FedEx, UPS, DHL

Key Features

• 32 discrete inputs (24 VDC): High-density channel count for compact panels and high I/O count machines.
• Positive/negative logic support: Typically compatible with both PNP and NPN sensors, reducing rewiring headaches.
• Four isolated groups: Usually grouped in 8 channels per group, helping minimize crosstalk and simplify commons.
• Per‑channel status LEDs: Fast visual diagnostics during commissioning and troubleshooting.
• Noise‑tolerant design: Suits industrial environments with switching loads and long sensor runs.
• RX3i backplane integration: Seamless with PACSystems RX3i CPUs and engineering tools.
• No external power required: Draws power from the backplane to keep wiring clean.

Technical Specifications

Related or Supporting Products

• IC694MDL645 – 32‑pt 24 VDC input (alternative logic options, similar density).
• IC694MDL260 – 120 VAC input module (when you need line‑voltage sensing instead of 24 VDC).
• IC694MDL634 – 32‑pt 24 VDC output (pairs well when you need matching high‑density outputs).
• IC695CHS012 / IC695CHS016 – RX3i baseplates (12‑slot / 16‑slot, panel or DIN‑rail mounting as specified).
• IC695PSD040 / IC695PSA040 – RX3i power supplies (select based on backplane load and redundancy needs).
• IC694TBB032 – Terminal block for 32‑point RX3i I/O (tidy field terminations, typically used with high‑density modules).

Installation & Maintenance

• Cabinet & environment: Install in a clean, dry control cabinet meeting typical industrial standards. Maintain adequate ventilation; keep ambient within 0–60 °C.
• Mounting: Seat the module firmly in an RX3i baseplate slot. From my experience, giving a little extra finger room around high‑density terminals saves time during commissioning.
• Wiring: Use shielded cable for long runs or noisy areas. Separate sensor wiring from high‑voltage or motor lines. Tighten terminals to the recommended torque and label each channel to reduce service time.
• Grounding & isolation: Use the per‑group commons properly to segment circuits (8 inputs per group). This typically lowers the chance of nuisance signals.
• Safety: De‑energize the panel before inserting/removing the module or changing terminal wiring. Verify polarity and common references for PNP vs. NPN devices.
• Routine checks: Visually inspect terminals and LEDs during preventive maintenance; clean dust with dry air; verify channel operation in the engineering software after any field changes.
• Firmware & CPU updates: While the input module itself is straightforward, keeping the RX3i CPU and project files current usually improves diagnostics and stability.

A quick field note from a packaging client: swapping to IC694MDL930 cut their I/O rack footprint by a third and, thanks to the per‑point LEDs, their technicians were clearing sensor faults in minutes instead of digging through trend logs. It seems to be a small change that pays back quickly in many cases.