Product Core Brief

• Model:
• Brand: GE Fanuc / Emerson Automation
• Series: PACSystems RX3i
• Core Function: High-density universal analog input module, converts analog voltage/current field signals into digital %AI register values for the RX3i CPU. Supports flexible wiring mode selection: 16 single-ended channels or 8 differential channels.
• Product Type: Single-width RX3i Non-Isolated Analog Input Module
• Key Specs: 24-bit Sigma-Delta ADC | Software-selectable signal ranges | Configurable digital low-pass filters | Supports hot swap on certified RX3i backplanes Note: Active lifecycle RX3i analog module; new original, surplus & refurbished stock available. -EA = PCB hardware revision suffix, mechanically interchangeable with other variants. Non-isolated design (common analog ground); not channel-to-channel isolated. Terminal block IC694TBB032 (screw) / IC694TBS032 (spring) sold separately. No native HART support.

 

Key Technical Specifications

• Channel Configuration (software selectable, whole module uniform mode): 16 single-ended inputs OR 8 differential input pairs
• Supported Signal Ranges (per-channel independent configuration): Voltage: ±10 V, 0–10 V, ±5 V, 0–5 V, 1–5 V Current: 4–20 mA, 0–20 mA, ±20 mA
• ADC Resolution: 24-bit Sigma-Delta conversion
• Data Format: Selectable 32-bit floating-point or 16-bit integer
• Configurable Low-Pass Filter Cutoff: 8 Hz, 12 Hz, 16 Hz, 40 Hz, 200 Hz, 500 Hz
• Input Impedance Voltage inputs: >100 kΩ Current inputs: Internal precision 249 Ω shunt
• Diagnostics: Open-circuit detection, over-range / under-range alarm, rate-of-change fault monitoring
• Backplane Power Consumption 3.3 VDC: 375 mA 5 VDC: 180 mA
• Isolation: Backplane-to-field isolation only; NO channel-to-channel galvanic isolation
• Overvoltage Protection: ±60 VDC continuous input withstand
• Status LEDs: MODULE OK, FIELD STATUS
• Operating Temperature: 0°C ~ +60°C horizontal cabinet mounting
• Storage Temperature: -40°C ~ +85°C
• Form Factor: Single-width RX3i module
• Compatible Baseplates: IC695CHS007, IC695CHS012, IC695CHS016 universal RX3i racks
• Required Terminal Block: IC694TBB032 (captive screw) or IC694TBS032 (spring clamp)
• Supported Software: Proficy Machine Edition
• Agency Certifications: UL508, Class I Div.2, CE

 

Product Introduction

is a high-density universal analog input module for PACSystems RX3i, widely used for monitoring pressure, flow, level, temperature transmitters and analog transducers. Engineers select wiring topology via PME software: single-ended for high channel count, differential wiring to suppress common-mode noise in noisy industrial environments. Multiple digital filter options allow balancing signal smoothness and response speed without external analog filters.

Critical Selection Distinction

1. : Non-isolated, high channel density, cost-effective for systems with unified field ground.
2. IC695ALG626: Channel-group isolated version of 16-channel AI for applications prone to ground loops. This module does not support HART protocol. For HART-capable analog inputs select dedicated HART AI modules.

Important wiring note: Non-isolated architecture means all analog channels share a common field ground. Multiple separated grounding points will create ground loops and measurement drift.

 

QA & Testing SOP (Transparency Building)

1. Incoming Inspection: Verify part marking and -EA revision suffix. Inspect backplane gold pins for bending/corrosion; check module housing integrity.
2. Live Testing: Mount onto validated RX3i baseplate. Inject precision voltage/current signals for all channels, verify conversion accuracy, test open-circuit diagnostic alarms and all filter settings, run continuous 24-hour acquisition stability test.
3. Electrical Testing: Monitor backplane 3.3V/5V rail stability. Insulation resistance ≥10MΩ between field circuits and chassis protective ground.
4. Firmware Record: Document hardware revision; photograph terminal wiring layout before disassembly.
5. Final QC & Packaging: Place unit inside anti-static shielding. Attach dated QC test tag confirming channel measurement validation prior to shipment.

 

Installation Pitfalls & Guide

❗ Hot Swap Precondition: Supports hot swap only on hot-swap rated RX3i universal backplanes. Non-hot-swap racks require full rack power shutdown before module replacement. ❗ Uniform Wiring Mode Rule: The entire module must be set to all single-ended OR all differential; mixed wiring topology on the same module produces invalid readings. ❗ Ground Loop Risk Warning: Non-isolated design. All transmitter grounds should be referenced to one single ground point to avoid signal drift. ❗ Terminal Block Separate Item: Module does not include terminal block; order IC694TBB032 or IC694TBS032 separately. ❗ Filter Tuning Guidance: Low filter frequencies (8Hz) provide best power-line noise rejection but slow response speed. ❗ ESD Risk: Static discharge damages ADC front-end circuits; symptoms include unstable channel readings and offset drift.

Replacement Guide

1. Pre-install: Lockout-tagout rack power; back up I/O hardware configuration. Photograph analog field wiring and terminal arrangement. Record configured filter settings and channel ranges.
2. Removal: Disconnect terminal block field wiring, unlatch module and slide straight out without twisting backplane pins.
3. Instew into original slot, attach terminal block and replicate all field wiring connections.
4. Power-on Test: Restore rack power, download saved configuration, verify all channel readings and confirm open-circuit diagnostic function operates correctly.

 

FAQ

es support hot swapping? A: Yes, on hot-swap certified RX3i universal backplanes. Non-hot-swap racks require full rack power shutdown.

Q: What does the -EA suffix mean? A: -EA denotes a specific PCB hardware revision. Core analog functionality identical to other variants, mechanically plug-compatible. Always perform full channel verification after replacement.

Q: What is the diffeen and IC695ALG626? A:

• : Non-isolated, high density, lower cost
• IC695ALG626: Group-channel isolated analog input, suppresses ground loops for multi-ground field wiring They are not directly interchangeable without reviewing field grounding design.

Q: Can I mix voltage and current signal ranges on the same module? A: Yes, each channel can be independently configured for voltage or current ranges via PME software.

Q: Does this module support HART transmitters? A: No native HART pass-through capability.

Q: Can this module be installed on serial expansion racks via IC695LRE001? A: Yes, compatible with RX3i serial expansion rack architecture.

Q: Will I/O configuration automatically work on a replacement module? A: Channel configuration resides in the CPU project. After replacement, verify wiring mode (single-ended/differential), filter parameters and channel range settings.