Product Overview
The IC693ALG442B is a mixed analog I/O module from the GE Fanuc Series 90-30 platform, now owned by Emerson. It packs four differential input channels and two single-ended output channels into a single slot. For maintenance engineers, that density means fewer modules to stock and simpler panel layouts.
This B-revision module handles both current and voltage signals on the same unit. Inputs accept 0 to 20 mA, 4 to 20 mA, 4 to 20 mA Enhanced, 0 to +10 V unipolar, and -10 to +10 V bipolar. Outputs mirror that flexibility with 0 to 20 mA, 4 to 20 mA, 0 to +10 V, and -10 to +10 V ranges. One spare covers multiple loop types.
Key Parameters That Matter on the Floor
Resolution sits at 12-bit, with 5 µA current input and 2.5 mV voltage input granularity. In practice, that means tight control on flow, pressure, and position loops without hunting or stair-stepping.
The update rate is 3 ms across all channels. For fast processes, that refresh speed keeps the controller working with current data, not stale samples.
Isolation is rated 250 VAC continuous and 1500 VAC for one minute from field to backplane. This protects the CPU and neighboring modules from ground loops and transients common in oil, gas, and heavy industrial cabinets.
Power draw is modest: 95 mA from the internal 5 VDC backplane with all outputs energized, plus 150 mA from a user-supplied 24 VDC source.
Where This Module Fits
Oil and Gas Skids
Wellhead and metering skids often mix 4 to 20 mA transmitters with 0 to 10 V position feedback. The IC693ALG442B reads both without extra signal conditioners, reducing wiring and failure points.
Water and Wastewater
Level and flow loops benefit from the 12-bit resolution and 3 ms update. Operators see smoother trends and fewer nuisance alarms.
Legacy Panel Upgrades
When a Series 90-30 rack needs an analog refresh, this module drops into an existing single slot. Dimensions are 124 × 30 × 114 mm, so it fits standard racks without rework.
Service and Reliability Notes
From a maintenance perspective, the module’s single-slot footprint and front-accessible terminals simplify swap-outs during planned outages. Keep cabinet ambient within the panel design limits and verify that the 24 VDC supply is clean and within tolerance.
Inspect terminal torque and connector seating during routine PMs. Because the unit is listed as legacy/obsolete in aftermarket channels, keeping one ready-to-ship spare on the shelf avoids extended downtime. Please verify current lifecycle status and availability with Oil AutoTech before ordering.
Integration and Selection Tips
The module communicates through the Series 90-30 backplane, so it integrates directly with existing CPUs and I/O racks in that family. No external gateway is required for backplane operation.
Before buying, confirm your rack has an open single slot, your field devices match one of the supported current or voltage ranges, and your 24 VDC supply can deliver the required 150 mA. Oil AutoTech offers hands-on technical selection help to match the module to your existing configuration.
For pricing and availability, contact Oil AutoTech today.
