Description
Key Technical Specifications
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Model Number: IC694MDL330
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Manufacturer: Emerson (ex GE Fanuc)
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Output Type: Triac (zero-cross turn-on), sourcing (positive logic)
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Channels: 8 outputs arranged in two isolated groups of 4
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Voltage Range: 85–264 VAC, 50/60 Hz (nominal 120/240 VAC)
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Current Rating: 2 A max per point; 4 A max per group; 20 A inrush for 1 cycle
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On-State Drop: ≤ 1.5 V @ 2 A
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Leakage: ≤ 1 mA @ 120 VAC
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Response Time: ≤ 1 ms ON; ≤ ½ cycle OFF
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Snubber: RC network (47 Ω / 0.015 µF) on every output for transient protection
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Fusing: 3 A slow-blow fuse per group (internal, not user-replaceable); blown-fuse LED per group
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Power Consumption: 315 mA from +5 V back-plane bus when all outputs ON
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Connector: 20-terminal integrated spring-clamp block (AWG 14-22)
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Isolation: 1500 VAC for 1 min between field and logic; 500 V group-to-group
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GE IC694MDL330
Environmental: –20 °C to +70 °C operational, conformal-coated, Zone 2 ATEX / C1D2 ABS approvals.
Field Application & Problem Solved
A RX3i remote I/O station on a cooling-tower doesn’t want sixteen individual relays—it wants one card that can drive eight 240 VAC contactors and indicators straight from the plant supply. Slide IC694MDL330 into any RX3i slot, land two wires per point, and you have fused, LED-indicated, snubber-protected outputs ready for PLC commands. When the card fails the group drops out and the HMI flags “OUTPUT FAULT”; swap the module (draw-out style), snap the 20-terminal plug back in, and the loads re-energise exactly as before—no software reload, no re-addressing. Found in every RX3i remote drop from water-treatment plants to wind-turbine nacelles. Value is density: one card replaces eight relays, a fuse block, and a handful of MOV suppressors.
A RX3i remote I/O station on a cooling-tower doesn’t want sixteen individual relays—it wants one card that can drive eight 240 VAC contactors and indicators straight from the plant supply. Slide IC694MDL330 into any RX3i slot, land two wires per point, and you have fused, LED-indicated, snubber-protected outputs ready for PLC commands. When the card fails the group drops out and the HMI flags “OUTPUT FAULT”; swap the module (draw-out style), snap the 20-terminal plug back in, and the loads re-energise exactly as before—no software reload, no re-addressing. Found in every RX3i remote drop from water-treatment plants to wind-turbine nacelles. Value is density: one card replaces eight relays, a fuse block, and a handful of MOV suppressors.
Installation & Maintenance Pitfalls (Expert Tips)
Group fuse blow—red “F” LED on, all four points dead
Each group has a 3 A internal slow-blow fuse. If an output short-circuits the fuse opens and the red “F” LED lights; the LED only works if any load is still connected. Check the LED first; if it’s dark, pull the card and meter the fuse—replace the entire module (fuse is not field-replaceable)
Each group has a 3 A internal slow-blow fuse. If an output short-circuits the fuse opens and the red “F” LED lights; the LED only works if any load is still connected. Check the LED first; if it’s dark, pull the card and meter the fuse—replace the entire module (fuse is not field-replaceable)
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Inrush overload—contactors weld the triac
The triac can handle 20 A for one cycle. If you drive a large contactor coil with > 20 A in-rush the junction fuses and the output stays on. Size the contactor coil or add an interposing relay—otherwise you’ll be explaining why the motor won’t stop
The triac can handle 20 A for one cycle. If you drive a large contactor coil with > 20 A in-rush the junction fuses and the output stays on. Size the contactor coil or add an interposing relay—otherwise you’ll be explaining why the motor won’t stop
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Wire size cheat—spring clamp cracks, intermittent fault
The 20-terminal block accepts AWG 14-22 one wire or two AWG 18. If you force two #14s the spring cracks and the point drops out under vibration. Use a ferrule or step down to #18 for doubles—torque to 0.5 N·m
The 20-terminal block accepts AWG 14-22 one wire or two AWG 18. If you force two #14s the spring cracks and the point drops out under vibration. Use a ferrule or step down to #18 for doubles—torque to 0.5 N·m
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GE IC694MDL330
Reverse polarity on AC common—fuse blows instantly
The module is AC only; land DC on the output common and the fuse blows before you can blink. Meter the supply—verify 120/240 VAC, 50/60 Hz, before you energize
The module is AC only; land DC on the output common and the fuse blows before you can blink. Meter the supply—verify 120/240 VAC, 50/60 Hz, before you energize
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Technical Deep Dive & Overview
IC694MDL330 is a triac-based output slice frozen in 2000s silicon. A 5 V logic interface latches the CPU word, drives eight zero-cross triacs, and reports fuse/status back to the RX3i CPU over the internal PCI bus. Because the module is group-fused and snubber-protected you can swap it hot—just kill the AC field supply first or you’ll arc-weld the 20-terminal plug. Treat the field terminals like a DIN-rail block and the card will keep the contactors pulling for another thirty years
IC694MDL330 is a triac-based output slice frozen in 2000s silicon. A 5 V logic interface latches the CPU word, drives eight zero-cross triacs, and reports fuse/status back to the RX3i CPU over the internal PCI bus. Because the module is group-fused and snubber-protected you can swap it hot—just kill the AC field supply first or you’ll arc-weld the 20-terminal plug. Treat the field terminals like a DIN-rail block and the card will keep the contactors pulling for another thirty years
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