New-Surplus IS215ACLEH1B for EX2100 Excitation Spares

Held as new-surplus, factory-packaged stock, this IS215ACLEH1B is the ACLE Application Control Layer module that GE EX2100 and EX2100e excitation systems rely on for regulator control. The ACLE is the master processor of the exciter — a QNX-based module on the IS200/IS215 platform shared with GE Speedtronic Mark VI equipment — and this unit is supplied at the H1BC revision, making it a sound candidate for a critical spare or a planned replacement.

The ACLE's Job in the Exciter

The ACLE runs the excitation control block-ware that governs generator field current, validates the application configuration on every power-up, checks run and start permissives, supports Boolean and I/O forcing for test, and raises application-level alarms. It occupies two slots, seats in the EX2100 racks built on IS200ESBP, IS200EBKP, IS200ERBP or IS200ERRB backplanes, and exchanges data with the IS200DSPXH1 DSPX signal-processor board across the backplane through dual-port RAM. Delivered as a sealed carrier-plus-PC/104 assembly, it is designed to be installed and replaced as a complete module.

Commissioning and Configuring a Replacement ACLE

A new-surplus board ships without your site's application, so plan the configuration step into the swap. Once the module is seated:

• Download the runtime and application from the toolbox over the ENET1 Ethernet port.
• Let the controller validate its toolbox configuration against the hardware at power-up — a mismatch here is the most common reason a good board appears not to start.
• Confirm the compact-flash configuration is written and retained through a power cycle.
• Verify the link to the IS200DSPXH1 DSPX and the firing path before returning the exciter to service.

Building this into the procedure avoids the false conclusion that a healthy replacement is faulty.

Diagnose First, Then Order — and What to Send Us

Before you draw down a spare, make sure the ACLE is truly the failed item. Rule out a configuration or firmware problem, a DSPX or gate-firing fault, a weak rack supply or backplane seating issue, and a lost toolbox or COM connection (the optional 336A3582P1 cable links a PC COM port to the ACLE). Each of these can imitate a dead controller.

To order the correct part, send the full part number and suffix (IS215ACLEH1B / H1BC), the revision, a photo of the board label, your EX2100 or EX2100e system and the machine it excites, the ControlST or toolbox version if known, the quantity, and your timeline. The reference publication is GEI-100584.

Why Condition and Suffix Both Matter

This unit's new-surplus, factory-packaged condition means it is unused stock in original packaging; even so, the electrical fit is set by the part number. IS215 is the Mark VI / IS200 special assembly, ACLE the module type, H1B the variant and the trailing letters the revision — all explained in our GE Speedtronic Part Number Decoder. For related boards, see the GE Mark VI IS200 Boards and GE Speedtronic Turbine Control Boards collections.

Related EX2100 Boards

Frequently sourced together with the ACLE are the IS200DSPXH1 DSPX and the EX2100 backplanes listed above; the ACLE also replaces the earlier ACLA module in these systems.

Request a Quote for this new-surplus IS215ACLEH1B and we respond within 24 hours, ship worldwide DDP, and accept purchase orders from qualified facilities.