GE Fanuc PACSystems RX3i IC694MDL340 – 16‑Point Relay Output Module for AC/DC Load Switching

The IC694MDL340 is a 16‑point relay output module for the PACSystems RX3i platform, designed for switching a mix of AC and DC loads from the PLC. From my experience, this is the go‑to option when you want clean isolation and broad load compatibility—solenoid valves, small motor contactors, pilot lamps, or interposing to higher‑power circuits. One thing I appreciate is the flexibility: it typically handles both 24 VDC and mains‑rated AC loads on the same card without fuss, as each point is a real relay contact.

Order Placement Process and Guarantees

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

Key Features

• 16 relay outputs (Form A, SPST‑NO): Dry contacts for AC or DC loads, ideal when you need galvanic isolation.
• Wide load compatibility: Typically supports low‑voltage DC (e.g., 24 VDC) and mains‑rated AC (commonly up to 250 VAC) on the same module.
• Per‑point current rating: In many cases up to 2 A resistive per point; check your load type (inductive loads benefit from snubbers or flyback diodes).
• Per‑channel status LEDs: Quick visual confirmation of output state during commissioning.
• Backplane‑powered: Logic power from the RX3i rack, no external auxiliary supply required for the module itself.
• Field‑friendly wiring: Removable terminal block; you can land typical field wiring without special connectors.
• Isolation to PLC logic: Relay barrier typically provides strong isolation for noisy or mixed‑voltage panels.
• Typical use cases: Solenoids, contactor coils, beacons, audible alarms, and interposing for higher‑power circuits.

Technical Specifications

Related or Supporting Products

• IC694MDL330 (RX3i): 8‑point relay output; fewer points when you want more panel space for heavier loads per circuit.
• IC694MDL241 (RX3i): 32‑point 24 VDC transistor output; better for high‑speed DC loads, not for AC.
• IC695CPU310 (RX3i CPU): Main controller often paired with IC694 I/O in the same rack.
• IC695CHS012 (RX3i 12‑slot rack): Backplane to host CPU, power supply, and I/O modules.
• IC695PWR048 (RX3i power supply): Common supply used to power the rack and I/O logic.

If you’re migrating from a mixed‑voltage panel, the IC694MDL340 typically simplifies wiring because each relay point is isolated—so AC and DC circuits can live on the same module without shared commons.

Installation & Maintenance

• Cabinet & environment: Mount the RX3i rack in a clean, dry, ventilated enclosure; maintain 50 mm clearance for airflow and wiring bend radius.
• Wiring: Separate high‑voltage AC from low‑voltage DC wiring; use ferrules where appropriate; land loads on the removable terminal block and verify conductor ratings.
• Load protection: For inductive loads, add RC snubbers (AC) or flyback diodes (DC) across coils to reduce arcing and extend relay life.
• Power‑up/replace: Insert and remove the module with system power off; hot‑swap isn’t recommended for relay output cards.
• Routine checks: Periodically verify terminal tightness, clean dust with dry compressed air, and review output counters in the PLC logic to schedule preventative relay maintenance if cycles are high.
• Firmware/config: Relay cards are typically configuration‑light; ensure your hardware catalog and RX3i firmware are current to avoid compatibility surprises.

Quality & Certifications

• Certifications: CE, UL/cUL, and RoHS compliance are typically available for RX3i modules.
• Manufacturing quality: Built under ISO 9001 quality systems (vendor standard for RX3i product line).
• Warranty: 365 days coverage through our channel.

If you’re uncertain about load ratings for a specific device (e.g., a high inrush contactor), share the datasheet and we’ll check the relay curves and suggest the right suppression so the IC694MDL340 runs cool and reliable.