Emerson IC694ALG223-BB RX3i Analog Current Input Module
A BB-revision IC694ALG223 module for sixteen high-density single-ended current-input loops in an RX3i rack.
Key Information
IC694ALG223-BB is the BB hardware execution of the PACSystems RX3i IC694ALG223 analog current input module. It brings sixteen single-ended process-current inputs into the controller and supports the documented 0–20 mA and 4–20 mA ranges.
The BB suffix is part of the installed identity and must not be dropped from a replacement request. Any revision-to-revision substitution still requires an approved rack, firmware and project compatibility check.
Functions
- Connects sixteen single-ended analog current loops to PACSystems RX3i.
- Supports 0–20 mA and 4–20 mA channel configurations.
- Provides 12-bit field-signal conversion for controller processing.
- Updates module data on the documented 13 ms schedule.
- Consolidates high-density process inputs in one rack position.
Specifications
| Manufacturer | Emerson / GE Fanuc |
|---|---|
| Model | IC694ALG223-BB |
| Base Catalog Number | IC694ALG223 |
| Hardware Revision | BB |
| Product Family | PACSystems RX3i |
| Product Type | High-density analog current input module |
| Input Channels | 16 single-ended |
| Input Ranges | 0–20 mA and 4–20 mA |
| Resolution | 12 bit |
| Module Update Time | 13 ms |
| Backplane Current | 120 mA at 5 VDC |
| User-Supplied Power | 65 mA at 24 VDC |
| Agency Listing | UL and UL hazardous-location listing |
| Approvals | CE Zone 2, ATEX, Class I Division 2 and listed marine approvals |
| Mounting Context | RX3i rack-based I/O installation |
| Revision Control | BB suffix retained for sourcing and receiving |
Installation
- Save the channel configuration, scaling, alarm logic and controller references before removing IC694ALG223-BB.
- Record the BB label, rack slot, terminal assembly, loop commons and external 24 VDC supply.
- Use the site loop-isolation procedure and verify polarity before moving any conductor.
- Load only the approved project configuration and confirm that the controller recognizes the installed hardware revision.
- Calibrate each used loop and verify engineering values, alarms, interlocks and diagnostics.
Lifecycle
- Store BB revision, calibration and project records with the module history.
- Trend channel deviations and common loop-supply events across the sixteen inputs.
- Inspect terminals, field power and shielding when proof-testing associated instruments.
- Review manufacturer compatibility before moving from BB to FC or another hardware execution.
FAQ
Why must the BB suffix remain visible when ordering IC694ALG223-BB?
The suffix identifies the installed hardware execution and lets engineering compare revision support, rack history and the validated project before approving another unit.
What should be recorded from the IC694ALG223-BB terminal assembly?
Capture wire numbers, channel positions, commons, shields, loop power, terminal part identity and clear photographs before disconnection.
How can an IC694ALG223-BB fault be separated from a field-loop fault?
Use a traceable current source at the terminal, verify external 24 VDC and wiring continuity, compare raw data and diagnostics, and test the field transmitter separately.
What commissioning evidence is expected after an IC694ALG223-BB change?
Retain as-left labels, project checksum, current-injection results, scaled-value checks, alarms, interlocks and final loop restoration approval.
Can IC694ALG223-BB and IC694ALG223-FC be mixed in one spares pool?
Only after the site has documented manufacturer compatibility, controller and firmware support, terminal equivalence and a tested revision-control procedure.
