Description
- Model & Brand: GE IS215ACLEH1BB / General Electric
- Series: EX2100 Excitation Control
- Part Type: ACLE Application Control Layer Module
- Core Function: Central application processor for the GE EX2100 excitation-control system
- Processor: 400 MHz processor architecture
- Memory: 8 MB EDO non-parity DRAM
- Operating Environment: QNX4 real-time operating system
- Communications: Ethernet and serial communications
- Physical Dimensions: Exact standalone dimensions should be confirmed from the GE mechanical drawing; the IS215 is a higher-level assembly rather than a simple IS200 PCB
- Estimated Shipping Weight: Approximately 1.0–1.5 kg packed, depending on enclosure, ESD protection, and cushioning
- What’s in the Box: IS215ACLEH1BB ACLE assembly, ESD shielding, rigid cushioning, identification materials; software media, cables, or mounting hardware only when explicitly included
- Interfaces: Ethernet, COM ports, ISBus-related interfaces, front-panel status indicators
- Application: Generator excitation and voltage-regulator control
- Firmware: Application-dependent and revision controlled
- Handling: ESD-controlled storage and power-isolated installation required
GE’s ACLE documentation identifies the IS215ACLEH1BB as an Application Control Layer module and explains that the IS215 level represents a higher-level assembly with additional components compared with the base IS200 ACLE board. A current technical record identifies the H1BB version as a 400 MHz EX2100 processor card.
Product Introduction
The ACLE is the processor layer of the EX2100 excitation system, where application control, communication, and real-time execution converge. IS215ACLEH1BB is the higher-level Application Control Layer assembly used in GE EX2100 excitation control. Current technical documentation identifies the H1B family with a 400 MHz processor, while supplier records associate the specific H1BB configuration with QNX4 real-time operation, Ethernet/serial communications, and 8 MB EDO non-parity memory.
For spare-parts control, every character in IS215ACLEH1BB matters. GE’s own board-identification guidance states that the complete part number, serial number, and Material List number should be provided when ordering a replacement, and it notes that later factory versions may be substituted when GE confirms backward compatibility. A warehouse should therefore keep the exact H1BB identity separate from older IS200 ACLE assemblies and from other H1B configurations (especially where an EX2100 controller contains site-specific application software).
Core Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | General Electric |
| Part Number | IS215ACLEH1BB |
| Functional Acronym | ACLE |
| Product Type | Application Control Layer Module |
| Primary System | GE Excitation Control |
| Assembly Level | IS215 higher-level assembly |
| Processor | 400 MHz class processor |
| Operating System | QNX4 real-time operating system |
| L1 Cache | 16 KB reported for the processor architecture |
| L2 Cache | 128 KB reported |
| Main Memory | 8 MB, 60 ns EDO non-parity DRAM |
| Local Memory Interface | Dual-port RAM |
| Ethernet | 10BaseT Ethernet interface reported |
| Serial Interfaces | Two COM ports reported |
| ISBus | Supported |
| Real-Time Clock | PC-compatible interface with RTC |
| Keyboard/Speaker Interface | PC-compatible interface |
| Reset | Front-panel reset control |
| Application | Excitation regulation and control |
| Software Environment | GE turbine/excitation control system software |
| Firmware | Application/revision dependent |
| Power Draw | Exact standalone value not established in the reviewed GE documentation |
| Heat Dissipation | Host chassis dependent |
| Dimensions | Verify current GE mechanical drawing |
| Weight | Verify actual assembly; packaging-dependent |
| PCB Coating | Verify exact H1BB assembly revision |
The GE ACLE documentation explains the board-number structure and identifies the IS215 level as a higher-level assembly. Technical records for the ACLE family report the 400 MHz processor, 16 KB L1 cache, 128 KB L2 cache, and 8 MB EDO RAM configuration.

GE IS215ACLEH1BB
🚨 Global Compliance & Industry Certifications
Certification should be documented against the complete excitation-control assembly and exact hardware revision.
- CE Mark: May apply to the complete equipment. Do not claim standalone CE conformity for without GE documentation covering the exact assembly.
- UL/cUL: Do not claim independent UL/cUL listing for the processor module without revision-specific evidence.
- ATEX / IECEx: Do not assume hazardous-area certification for the bare ACLE module. Applicability depends on the complete equipment configuration and installation.
- Class I, Division 2 / Zone 2: Where applicable, verify the complete certified controller, enclosure, wiring, and installation arrangement.
- Marine Approvals: No DNV, ABS, or Lloyd’s Register approval was established for this exact processor assembly from the reviewed records.
- EMC: The ACLE contains processor, Ethernet, serial, and ISBus interfaces; EMC compliance should therefore be evaluated as part of the complete cabinet.
Why this matters: The ACLE controls an excitation system that directly affects generator voltage regulation. A processor assembly without the correct system approval or revision traceability can create both commissioning and compliance exposure.
Verify specific lot certifications with OEM.
🚨 Long-Term Storage & Asset Preservation Guide
Keep in its original ESD shielding bag. The processor assembly contains memory devices, communication interfaces, connectors, and active logic. Protect the edge connectors and front-panel interfaces from impact; do not allow the board to rest directly on a conductive metal surface.
Control humidity below 60% RH where practical. Avoid condensation and large temperature swings. Older QNX-based processor assemblies can remain electrically intact for years while connector oxidation or degraded power components later cause boot or communication faults.
Preserve software identity with the physical spare. Record the complete H1BB revision, serial number, application designation, and any firmware/software version visible during inspection. GE explicitly advises providing the complete part number, serial number, and Material List number when ordering replacement boards.
Do not remove the memory devices or alter processor configuration during routine warehouse inspection. Before energized testing after long storage, let the sealed package reach room temperature and inspect all connector contacts, capacitors, solder joints, and interface circuitry.
Physical Installation Prerequisites
- Host System: Install only in the approved GE excitation-control architecture.
- Assembly Identity: Match exactly, including the H1BB configuration.
- Power Isolation: Shut down and isolate the excitation-control equipment according to the approved GE maintenance procedure.
- Memory/Software: Record the original software and configuration information before removing the existing controller where site procedures permit.
- Connector Mapping: Photograph and label Ethernet, COM, ISBus, and other interfaces before removal.
- Cooling: Preserve the host rack’s forced-air or convection path; do not place cables across processor ventilation areas.
- Grounding: Maintain the cabinet protective-earth and signal-reference arrangement.
- Clearance: Leave sufficient front and rear service access for connector removal, board extraction, and cable bend radius. Follow the GE cabinet drawing rather than applying an arbitrary clearance number.
- ESD: Use a grounded wrist strap and ESD-safe work surface.
- Mechanical Retention: Verify all retaining screws, guides, and connector latches are secure before energization.
- Configuration: Confirm the replacement processor is approved for the installed hardware revision and application.
- Final Test: Verify processor startup, system communications, excitation-control diagnostics, and generator-voltage regulation functions according to the approved commissioning procedure.
GE’s ACLE ordering guidance specifically calls for the complete part number, serial number, and Material List number when ordering a replacement.
Buyer’s FAQ
Q1. What HS Tariff Code should be used for ?
Do not assign a final HS classification from “processor card” alone. This is a dedicated excitation-control assembly, and classification varies by jurisdiction and declared function. Have the customs broker review the technical description, electrical role, invoice wording, and destination tariff schedule.
Q2. What Country of Origin documentation should accompany the shipment?
Use the actual manufacturing origin supported by supplier or manufacturer documentation. The export warehouse location does not establish COO. Retain the commercial invoice, packing list, COO statement or certificate where applicable, exact part-number photograph, serial number, and Material List information in the compliance file.
Q3. Can be hot-swapped?
Do not assume live replacement is permissible. This is an active excitation-control processor with application software, memory, communication interfaces, and system-level control responsibilities. Unless the exact GE maintenance procedure for the installed cabinet expressly authorizes live extraction, use a controlled shutdown and power-isolation process.
Q4. Does a New Original include the latest firmware pre-loaded?
Do not assume that it does. The ACLE is an active processor assembly running application software, and the installed software/configuration can be tied to the specific excitation system. GE’s ordering guidance emphasizes complete part identification and system information rather than treating the board as a generic processor.
Q5. What warranty and shipping controls should be required?
The quotation should specify , serial number, hardware revision, physical condition, warranty period, return procedure, and available software/firmware identification. For international shipment, use ESD shielding, rigid connector protection, moisture control, and insurance based on the documented replacement value.



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