Description
Meta Description
Sourcing specifications and lifecycle strategies for the Emerson GE Fanuc PACSystems RX3i IC695ALG600-AB 8-channel universal analog input module.
Technical Profile: IC695ALG600-AB
The IC695ALG600-AB is a high-density universal analog input module designed for the PACSystems RX3i backplane network. This module features 8 independent, software-configurable channels capable of interfacing with voltage, current, thermocouple, RTD, and resistance signals directly without external signal conditioners.
| Parameter | Value |
| Model Number | IC695ALG600-AB |
| System Platform | PACSystems RX3i (Emerson / GE Fanuc) |
| Number of Channels | 8 general purpose input channels |
| Input Configurations | Current (4–20 mA, 0–20 mA, ±20 mA); Voltage (±10 V, 0–10 V, 1–5 V, 0–5 V, ±50 mV, ±150 mV); Thermocouple; RTD; Resistance |
| Input Resolution | 11 to 16 bits (dependent on configuration & filter selection) |
| Internal Power Draw | 350 mA @ 3.3 V DC; 400 mA @ 5 V DC |
| Power Dissipation | 5.4 W maximum |
| Module Slot Width | Single slot on RX3i Universal Backplane |
| Terminal Block Type | Requires Extended Terminal Block (IC694TBB032 or IC694TBS032) |
| Condition Profile | Factory Sealed (New Surplus) or Refurbished (Fully Functional) |
Technical Analysis and Deployment Realities
Field Performance Under Thermal Stress
Field experience with the RX3i platform shows that tight, enclosed marshalling cabinets can cause localized heat pockets to form around high-density analog racks. The IC695ALG600-AB dissipates up to 5.4 W under maximum load. If your cabinet lacks active fan extraction, elevated ambient temperatures will degrade channel-to-channel accuracy benchmarks, pushing calibration drift past the nominal 0.1% datasheet limit.
[ IC695ALG600-AB Internal Rail Routing ]
+-----------------------------------------------------------------+
| 3.3 V Rail (350 mA) | 5 V Rail (400 mA) | Local Cold Junction Comp. |
+-----------------------+-----------------------+-----------------+
| |
| Analog Processing A/D ASIC <---> Galvanic Isolation Barrier |
| |
+-----------------------------------------------------------------+
| Ch 1-4 Input Terminal | Ch 5-8 Input Terminal | Ground |
+---------------------------+---------------------------+---------+ Cold Junction Compensation Calibration
When deploying thermocouples into this card, accurate cold junction compensation (CJC) relies on the proper installation of thermistors in the terminal block. Well, technically you can run the card without them by utilizing a remote fixed reference junction—though your calculation math inside the CPU gets cluttered fast if you choose that route. Ensure the terminal block selection matches your configuration profile within your engineering workbench (Proficy Machine Edition).
Inventory Allocation Strategy
Balancing carrying costs against critical stock-out incidents requires evaluating your active footprint across all production facility cells.
- On-Site Buffer Stock (Class A): Maintain 1 functional spare unit on the shelf for every 6 active modules in service. This provides an insurance policy against high-energy voltage transients blowing out the input field-effect transistors (FETs) on a single channel during electrical storms.
- Consignment Strategy (Class B/C): For slow-moving lines or non-critical secondary utilities, avoid tying up capital. Rely on vendor consolidation agreements with stocking automation distributors who can guarantee tested refurbished parts shipped on a 24-hour hot-swap schedule.
Lifecycle Sourcing & System Constraints
Hardware Suffix Variance
The “-AB” suffix on this model designator represents a specific hardware revision layer manufactured during the transition era of the GE Automation to Emerson platform. While the core operational parameters remain identical across older and newer revisions, certain firmware versions (v3.10 versus v4.20) introduce subtle variations in the digital filtering step response settings.
Important Configuration Note: If you swap a failed older module with an “-AB” revision unit, do not forget to verify that the filter frequencies configured in your hardware configuration tree match the input suppression goals of your specific instrument loops.
System Compatibility Boundaries
- Not Recommended For: Do not install this standard module in high-density safety instrumented systems (SIS) or burner management loops that require localized SIL-rated safety interlocks within the I/O module tier itself. This card lacks autonomous safety shutdown vectors.
- Last-Time-Buy Planning: While Emerson continues to support the RX3i architecture actively, component lead times can fluctuate based on global chip supply chains. Do not delay your reorder points until your warehouse shelf hits zero units.
Quick Decision Framework
- Immediate Check: Verify whether your wiring technicians utilized the high-density spring-style (TBS032) or standard box-screw (TBB032) terminal block when building out the layout.
- Firmware Rule: Match the hardware revision levels closely if you require synchronized multi-channel scanning across redundant CPU racks.
- Sourcing Action: Demand a dedicated channel-by-channel test report from your refurbished component source to confirm no leakage current on the 4–20 mA loop inputs.
Frequently Asked Questions
Can the IC695ALG600-AB power a 2-wire field transmitter directly from the loop terminal?
No, this module does not source loop power for external field instruments on its input terminal points. You must route an independent 24 V DC loop power supply in series with your 2-wire transmitter and the input terminal channel to close the measurement loop.
What causes a blinking green “MODULE STATUS” light on the front cover plate?
A blinking green status indicator shows that the module has successfully completed its internal power-on self-test (POST) routines but has not yet received its configuration payload from the host RX3i CPU. This status is normal during initial rack boot-up sequences before the controller transitions into “Run” mode.
How do I configure a single channel to switch from a 0–10 V input to a 4–20 mA input?
Unlike older Series 90-30 cards that relied on physical DIP switch arrays on the side of the board, the IC695ALG600-AB handles all signal selections through software settings. Open your project hardware configuration tree in Proficy Machine Edition, select the target slot, and change the channel parameter dropdown menu to your new target signal range. Then download the updated configuration to the CPU.
