GE IC670ALG240 Replacement for Series 90 Micro Field Control

Product Overview

GE IC670ALG240 Replacement for Series 90 Micro Field Control: Seamless Migration & Upgrade

The GE IC670ALG240 is a 16-channel analog current input module designed for the GE Series 90 Micro and Field Control platform. As legacy automation systems age and original GE IC670 series components reach end-of-life or become increasingly difficult to source, plant engineers and procurement teams face mounting pressure to maintain uptime without committing to a full system overhaul. The IC670ALG240 remains one of the most widely deployed analog input modules in process control, discrete manufacturing, and utilities infrastructure — and TOPNLMS stocks verified units ready for immediate dispatch from Xiamen, China.

Whether you are replacing a failed module in an existing Field Control rack, consolidating spare-parts inventory, or executing a phased migration from an older GE Series 90-30 or Series 90-70 architecture toward a more maintainable Field Control topology, the IC670ALG240 provides a direct, wiring-compatible drop-in solution. Each unit accepts 4–20 mA current signals across all 16 channels simultaneously, with no hardware jumper changes required when substituting for a previously installed IC670ALG240 in the same slot position.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful migration to or around the IC670ALG240 rarely involves a single module in isolation. In most Field Control panel retrofits, the IC670ALG240 is installed alongside the IC670ETM001 Ethernet TCP/IP communications module, which bridges the Field Control backplane to a plant-wide Ethernet network and eliminates the need for legacy Genius Bus cabling. Where the existing control cabinet uses a GE IC670PWR002 24 VDC power supply module, no power infrastructure changes are required — the IC670ALG240 draws field power directly from the backplane bus.

For sites migrating from older Series 90-30 hardware, the transition typically involves re-mapping analog I/O addresses in Proficy Machine Edition. Engineers often pair the IC670ALG240 with the IC670MDL640 discrete output module and the IC670MDL240 discrete input module to reconstruct a complete mixed I/O node within a compact Field Control chassis such as the IC670CHS002 5-slot or IC670CHS101 10-slot backplane. This approach dramatically reduces panel footprint compared to the original IC693 rack-based layout.

Where signal conditioning is required — particularly when field sensors produce voltage signals rather than current — a DIN-rail-mounted signal isolator or transmitter (such as a 4–20 mA loop-powered isolator) is inserted upstream of the IC670ALG240 terminal block, preserving wiring runs without re-pulling cable. For sites that retain a GE IC670CPU105 or IC670CPU106 Field Control processor, the IC670ALG240 integrates without firmware changes, as the module type is natively recognized by the CPU’s I/O configuration table in Machine Edition.

In larger migration projects where the Field Control node communicates upstream to a GE PACSystems RX3i or RX7i controller via Ethernet, the IC670ETM001 serves as the gateway, and the IC670ALG240 analog data is surfaced as a remote I/O node — a topology that supports phased decommissioning of legacy Genius Bus segments without disrupting live production. Programming cables such as the IC690USB901 USB-to-serial adapter remain compatible for on-site commissioning and diagnostics via Proficy ME.

Retrofit Guidance FAQ

Q: Is the IC670ALG240 a direct drop-in replacement for an existing IC670ALG240 in the same rack?
A: Yes. If the failed module is an IC670ALG240 in an IC670 Field Control backplane, the replacement unit installs in the same slot with no wiring changes. The removable terminal block transfers directly, preserving all field wiring. Re-download the hardware configuration from Proficy Machine Edition to confirm module recognition.

Q: Can the IC670ALG240 replace an IC693ALG222 or IC693ALG442 from a Series 90-30 system?
A: Not as a direct slot-for-slot swap — the IC693 and IC670 platforms use different backplane form factors. However, the IC670ALG240 can replace the functional role of those modules when the control node is migrated to a Field Control chassis. I/O addresses must be remapped in the PLC program, and field wiring must be re-terminated to the IC670 terminal block layout.

Q: What communication protocols does the IC670ALG240 support?
A: The IC670ALG240 communicates over the IC670 local backplane bus. When paired with the IC670ETM001, the node supports Ethernet TCP/IP (SRTP and Modbus TCP) for upstream communication to PACSystems or SCADA hosts. Legacy Genius Bus connectivity requires a Genius Bus Controller module in the same rack.

Q: How much panel space does the IC670 Field Control system require compared to a Series 90-30 rack?
A: The IC670 platform is significantly more compact. A 10-slot IC670CHS101 backplane occupies roughly one-third the DIN-rail space of an equivalent IC693 rack, making it well-suited for retrofit projects where cabinet space is constrained.

Q: What programming software is required for commissioning?
A: GE Proficy Machine Edition (Logic Developer – PLC) is the standard tool. VersaPro is also compatible for older projects. The IC670ALG240 module is configured via the hardware configuration tree in Machine Edition; no special driver or add-on instruction is required.

Q: Does TOPNLMS test modules before shipment?
A: Yes. Every IC670ALG240 unit undergoes functional verification prior to dispatch, including power-on self-test and channel continuity checks. A test report is available upon request.

Warranty Assurance

Every GE IC670ALG240 unit supplied by TOPNLMS is covered by a 12-month warranty from the date of shipment. This warranty covers manufacturing defects and functional failures under normal operating conditions. If a unit fails within the warranty period, TOPNLMS will arrange a replacement dispatch or full refund — whichever the customer prefers — with no requirement to return the defective unit for pre-authorization in most cases.

Pre-shipment testing is conducted on 100% of units. Modules are packed in anti-static ESD bags with foam cushioning and shipped via DHL, FedEx, or UPS Express from our Xiamen warehouse, with typical transit times of 3–7 business days to most destinations. Tracking numbers are provided within 24 hours of order confirmation.

For urgent replacement requirements — including same-day dispatch for orders confirmed before 14:00 CST — please contact our sales team directly. We maintain buffer stock of high-demand IC670 series modules specifically to support emergency plant maintenance scenarios where downtime cost exceeds the cost of expedited freight.

TOPNLMS serves industrial buyers across manufacturing, utilities, oil & gas, water treatment, and building automation sectors. Our procurement team can assist with cross-referencing discontinued GE part numbers, confirming hardware revision compatibility, and coordinating multi-line orders that combine IC670 modules, power supplies, backplanes, and communications hardware into a single consolidated shipment.