GE IC694MDL940 PACSystems RX3i 16‑Point 2A Relay Output Module

Description

Hardware & Electrical Specifications

‑ Model：IC694MDL940 ‑ Part Number：IC694MDL940 ‑ Module Type：RX3i 16‑Point 2A Relay Output Module ‑ Mounting：Plug‑in any I/O slot of RX3i backplane, main rack or expansion rack ‑ Backplane power consumption：  • 5VDC bus：7 mA (all outputs ON)  • 24VDC relay‑drive bus：135 mA (all outputs ON) ‑ Output channel：16‑point NO normally‑open relay output, 4 groups ×4 points ‑ Load voltage range：  • DC：5‑30 VDC  • AC：5‑250 VAC, 47‑63Hz ‑ Load current：  • Per‑channel resistive max：2 A  • Per‑group common terminal max：4 A  • Minimum load current：10 mA  • Peak inrush current：5 A max ‑ Response time：ON max 15 ms; OFF max 15 ms ‑ Isolation：  • Field‑to‑logic backplane：1500 VAC 1‑minute withstand  • Group‑to‑group isolation：500 VAC  • No isolation between points inside same group ‑ Terminal：20‑pin captive screw terminal block ‑ Diagnostics：Module self‑diagnosis; no per‑channel short‑circuit detection ‑ PCB treatment：Conformal coated for dust‑moisture‑corrosion resistance ‑ Compatibility note：Cannot run standalone; inductive loads must install free‑wheel diode / RC‑snubber absorption circuit; external fuse required for each group; full discrete‑loop simulation test mandatory after replacement。

Environmental Specifications

‑ Operating temperature：0 ℃ ~ +60 ℃ ‑ Storage temperature：‑40 ℃ ~ +85 ℃ ‑ Relative humidity：5%‑95% non‑condensing ‑ Installation location：Indoor industrial control cabinet, IP20 ‑ EMC compliance：IEC 61000‑6‑2 ‑ Certifications：CE, UL Class I Div 2 hazardous‑location certification

Mechanical Data

‑ Weight：approx 0.36 kg ‑ Dimension：RX3i single‑slot module form‑factor ‑ Handling note：ESD‑sensitive relay‑drive circuit; inductive loads need absorption components; strictly control per‑group 4A current limit

Main Functions

1. Drive field‑side solenoid valves, contactors, indicator lamps, motor‑starter auxiliary coils, support AC and DC mixed‑load switching.
2. Receive output data from RX3i CPU over backplane bus, actuate internal relay contacts to switch external field power circuit.
3. LED status indication on front panel:   ‑ Green PWR：Module internal power‑on indicator   ‑ 16 individual channel green LEDs：Real‑time ON/OFF status for each output

Installation & Wiring Requirements

1. Cut off PLC rack power and external field‑load power before replacement. Hot‑swap is forbidden. Strict anti‑static protection when handling module.
2. Insert IC694MDL940 fully into RX3i backplane I/O slot and lock latch.
3. Field wiring strictly follow GE RX3i hardware manual; inductive coil loads must add RC‑snubber or free‑wheel‑diode; install external fuse for every output group; separate signal cables from high‑power cables, reliable protective‑ground connection.
4. After replacement：power‑on rack and field‑load power; verify PWR and channel LED status; perform full‑channel output trigger test.
5. Replacement note: Per‑group total current shall not exceed 4A; no built‑in channel fuse; absorption protection is essential for inductive loads; full‑system commissioning test mandatory before unit put‑into‑service。