IS215ACLAH1A Supplied With Its IS200ACLAH1A Board

This listing pairs the IS215ACLAH1AL Application Control Layer assembly with its underlying IS200ACLAH1A communications board — the two halves of the ACL used in GE's EX2100 excitation control. The ACL is the microprocessor-based master controller for the generator exciter: it runs the outer regulating loops and moves data over Ethernet and ISBus. Supplying the IS215 assembly together with the IS200 board is useful when you want a matched, known-good pair rather than gambling on one piece fitting an unknown mate.

In service the ACL seats in the EX2100 exciter rack on the Exciter Backplane (or, in Innovation Series drives, the Control Assembly Backplane) and works next to the DSPX processor. From there it manages the automatic voltage regulator, power system stabilizer, under-excitation limiter and VAR/power-factor loops, and provides the exciter's Ethernet links to the HMI, the LCI and the turbine control.

IS200 or IS215? Matching the Right Level for Your Exciter

The two numbers describe different assembly levels of the same design. IS200ACLAH1A is the board-level catalog number — the printed-wiring communications card itself. IS215ACLAH1A is the higher-level, coated assembly built up from that board. Some spares are stocked at the IS200 level and others at IS215, which is exactly why this pairing exists: it puts both references in one hand so the part your site records call out is covered whichever way it was cataloged.

Troubleshooting the Exciter Comm Path First

When the symptom is a communications or regulation fault, check the surroundings before deciding the ACL is scrap:

• Network and cabling. Lost HMI, LCI or turbine-control communications is often the Ethernet path, a switch, or a COM cable rather than the port on the board.
• Configuration. A board that comes up but misbehaves may be carrying stale application code after an earlier swap; verify it in the toolbox against the exciter's records.
• DSPX and backplane. The ACL and DSPX trade data continuously across the backplane, so a neighbor or connector fault can look like an ACL failure. Reseat and check the DSPX first.
• Power and field. Confirm control power to the rack and the health of the exciter power stage and field before condemning the module.

On a redundant EX2100, use the diagnostics to identify the affected channel instead of replacing both. GEH-6632 and GEI-100434 are the manuals to work from.

Decoding the Pair of Part Numbers

Both numbers share the ACLA function and the H1 hardware group; they differ only in the leading assembly level (IS200 versus IS215) and the trailing revision letter — the L on this IS215ACLAH1AL assembly. Treat the suffix as a revision/variant to match rather than a functional change, and confirm the exact strings on both labels. Our GE Speedtronic Part Number Decoder walks through each field of these Innovation Series numbers.

From ACLA to ACLE: Cross-Generation Notes

Within the same generation, the ACLI variant adds two ISBus ports to the ACLA design. Across generations, the newer ACLE (IS215ACLE…) is a higher-level assembly with an updated processor and two faceplate Ethernet ports for EX2100e exciters — a successor rather than a plug-in equivalent. If you are standardizing spares, keep ACLA and ACLE clearly separated. More boards on the shared IS200/IS215 platform are in our GE Mark VI IS200 Boards collection.

What Your Quote Should Include

To match this pair precisely, please send:

• Both full part numbers with suffixes (IS215ACLAH1AL and IS200ACLAH1A) and the revisions on the labels, with photos if possible.
• Your exciter model (EX2100 or EX2100e) and whether it is simplex or redundant.
• Any other rack boards you are matching, such as the DSPX.
• Quantity and how quickly you need it.

Request a Quote

This ACL pair is offered in used condition, cleaned and tested, with a one-year warranty. Tell us the revisions you are matching and we will confirm availability from stock. We return quotes within 24 hours, ship worldwide DDP, and accept purchase orders from qualified operators and EPCs. Use the Request a Quote button to begin.

General Information about the Product
Part Number	IS215ACLAH1A Mark VI IS215
Description	GE General Electric IS215ACLAH1A IS215ACLAH1AL With IS200ACLAH1A Comm. Card
Condition	used Clean and Tested. With 1 Year Warranty.