GE IC695ALG508 | CE/UL 8-Channel RTD Input Module

Description

• Model & Brand: GE Fanuc / GE Intelligent Platforms IC695ALG508, PACSystems RX3i 8-channel isolated RTD input module. The product is now associated with Emerson Automation following GE Intelligent Platforms’ transition to Emerson.
• Physical Dimensions: Published supplier data varies. A practical planning envelope is approximately 130 × 130 × 35 mm (W × H × D), but this should be treated as an estimate rather than a controlled OEM dimensional drawing.
• Estimated Shipping Weight: Published net/module figures range around 0.26–0.45 kg, while some sellers quote approximately 1.5 kg shipping weight after packaging. For freight booking, use the measured packed unit rather than a catalog estimate.
• Installation Format: One-slot module for an RX3i Universal Backplane.
• I/O Configuration: 8 isolated differential RTD/resistance inputs.
• Field Wiring: Each RTD channel supports 2-wire, 3-wire, or 4-wire configurations; direct resistance measurement is also available.
• What’s in the Box: Normally the IC695ALG508 module only. Terminal blocks are ordered separately; do not assume IC694TBB032, IC694TBS032, or their extended variants are included without an explicit packing-list entry.
• Storage Packaging: Use an ESD shielding bag, rigid cushioning, and moisture-resistant outer packaging for long-duration warehouse storage.

Product Introduction

The IC695ALG508 mounts into the RX3i Universal Backplane and takes the place of the field-side temperature acquisition point within the PACSystems control architecture. Its eight isolated differential channels process RTD or resistance signals locally, reducing the number of separate signal-conditioning devices that would otherwise be required in the cabinet. Each channel can be configured independently for 2-, 3-, or 4-wire RTDs, while the module performs RTD linearization based on ITS-90.

From an asset perspective, the module deserves careful identity control because the revision history is not uniform. GE documentation lists IC695ALG508-AA as the initial release, BA as a terminal-block detector-switch modification, CA as a label-only change, and DB as a new hardware/firmware design intended to address an obsolescence issue and RoHS compliance. A warehouse record containing only “ALG508” therefore loses information that can matter during replacement planning.

Core Technical Specifications

The published RX3i system documentation lists 400 mA at 3.3 VDC and 200 mA at 5 VDC, corresponding to approximately 2.32 W of backplane supply loading before other system losses are considered. The module documentation separately specifies 2.5 W maximum power dissipation.

GE IC695ALG508

🚨 Global Compliance & Industry Certifications

For this module family, compliance should be established from the actual revision and physical nameplate, not from a generic statement about the RX3i platform.

• CE Mark: RX3i documentation and product records associate the platform with CE conformity requirements. Confirm the marking on the actual module and its applicable declaration.
• UL / cUL: RX3i industrial-control equipment is commonly supplied under UL/cUL certification frameworks. The exact certificate and conditions of acceptability should be checked against the installed module revision.
• ATEX / IECEx: Do not assume certification. The evidence reviewed for IC695ALG508 does not establish an ATEX or IECEx hazardous-area approval for the exact module.
• Marine approvals: DNV/DNV GL or other marine classification is not established here for this exact catalog number and should not be entered into a compliance database without supporting certification.

For hazardous-location work, certification boundaries matter. An RTD module can be electrically suitable yet still be unacceptable where the cabinet’s hazardous-location approval requires a specific certified equipment configuration.

Verify specific lot certifications with OEM.

Keep the product label, certification markings, revision, serial number, and date code in the asset record. That evidence is considerably more useful during an audit than a distributor webpage screenshot.

🚨 Long-Term Storage & Asset Preservation Guide

Leave the PCB inside the ESD shielding bag. The exposed terminal connector and card-edge interface should not remain uncovered for years, particularly in warehouses where dust and electrostatic activity vary seasonally.

Avoid condensation cycles. The specified storage range reaches -40 to 85°C, but that does not mean uncontrolled humidity is acceptable. Store in a clean, dry environment and allow a cold module to reach room temperature before opening its ESD bag.

Inspect the terminal-block interface before redeployment. The ALG508 uses a terminal-block detection mechanism, and revision BA specifically modified the detector switch to improve contact tolerance. A damaged or contaminated interface can therefore create what appears to be an electronic fault when the actual problem is mechanical engagement.

For long-held stock, record the revision, firmware, serial number, date code, packaging condition, and inspection date. Re-test before release to the maintenance floor.

Physical Installation Prerequisites

The is installed into an RX3i Universal Backplane and occupies one slot. It is not a standalone DIN-rail device.

Allow sufficient cabinet clearance for the RX3i rack’s cooling airflow. Do not pack wiring ducts or other heat-producing components directly against the module body. The module’s specified operating range is 0–60°C, so cabinet-level thermal analysis is required when adjacent equipment raises local ambient temperature.

Before insertion:

• Verify the correct RX3i Universal Backplane and approved slot location.
• Confirm the terminal block is the correct high-capacity type.
• Inspect the connector and terminal-block detector for mechanical damage.
• Route RTD wiring separately from high-energy switching conductors where practical.
• Use the grounding and shield arrangement specified for the particular RTD installation.
• Confirm the sensor wiring method—2-, 3-, or 4-wire—matches the channel configuration.

The module supports RIUP, but that capability should not be interpreted as permission to bypass the plant’s approved electrical isolation procedure. Follow the specific system maintenance procedure before removing or installing energized hardware.

Buyer’s FAQ — Logistics & Compliance Focus

Q1. What HS tariff code should be used for ?

A likely customs heading is within HS 8537, covering electrical apparatus used for control or distribution. The precise six-digit and national tariff extension depend on the importing country and the customs authority’s interpretation.

Do not copy a supplier’s national code directly onto every international shipment. Have the importer or customs broker validate the destination-specific classification.

Q2. What Country of Origin should appear on the commercial invoice?

Do not determine COO from the brand name alone. Historical supplier records identify different origin information for the broader GE/Emerson product family, so the physical label and available manufacturing documentation should control the declaration for the specific unit.

For an audit-sensitive shipment, make the COO statement consistent across the invoice, packing list, certificate of origin, and customs filing.

Q3. Should insurance cover the module separately?

For a legacy RX3i spare, separate cargo insurance is sensible when the replacement value or operational consequence is significant. Protect the exposed terminal connector with rigid internal cushioning; impact damage in this area can make installation impossible even when the electronics remain functional.

Record the serial number and photograph the package before dispatch. Those records support both asset traceability and carrier claims.

Q4. Does include the latest firmware?

The catalog number alone does not prove the firmware revision. The ALG508 release history identifies different hardware/firmware generations, including the DB revision with firmware revision 2.00, while the initial AA/BA/CA generations are associated with earlier revision history.

Before purchasing as a replacement, request the actual firmware revision and hardware suffix from the physical label or diagnostic screen. RX3i CPU firmware compatibility also matters; published documentation specifies an RX3i CPU firmware baseline of 5.5 or later for the .

For warehouse acceptance, record the exact revision, serial number, firmware revision, terminal-block requirement, certification markings, and date code. This creates a defensible asset record and reduces the chance that an apparently identical spare is sent to the field without the required revision match.