Description
GE IS215UCCCS05A – Product Introduction
1. Product Overview
The IS215UCCCS05A is a core VMEbus controller module manufactured by GE (General Electric) for the Mark VI / Speedtronic MKVI gas turbine control system. Serving as one of the “brains” of the control system, it is widely deployed in large-scale gas turbine power generation, industrial drive, and process control applications. It is a classic hardware platform within GE’s industrial automation product line.

IS215UCCCS05A module card GE
2. Core Functions
| Function | Description |
|---|---|
| Control Logic Processing | Executes complex control algorithms for precise closed-loop control of gas turbine speed, temperature, pressure, flow, and other critical parameters |
| Data Acquisition | Collects analog and digital signals from field sensors (temperature, pressure, flow, vibration, etc.) and processes them in real time |
| Communication Interface | Interconnects with other I/O modules and controllers via the VME bus; supports RS-485 serial ports and Ethernet for data exchange with DCS/SCADA systems and operator/engineer workstations |
| Human-Machine Interface (HMI) | Provides operation and monitoring interfaces, supporting configuration and diagnostics from engineering and operator stations |
| Redundancy Support | Supports Mark VI system dual-controller redundant architecture to ensure high system availability |
3. Key Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | IS215UCCCS05A |
| Bus Standard | VME (VMEbus / VME64) |
| Processor | High-performance embedded processor (Intel architecture; reference: IS215UCVHM06A uses a 1.06 GHz Celeron) |
| Memory | Large-capacity SDRAM + Flash (typical: 1 GB SDRAM + 128 MB Flash; varies with firmware version) |
| Communication Ports | VME bus, RS-485 serial ports, dual Ethernet (RJ-45), USB port |
| I/O Voltage | 24V DC |
| Operating Temperature | -20°C to +60°C (industrial-grade wide temperature range) |
| Physical Dimensions | Approximately 120 mm × 80 mm × 45 mm (VME single-slot standard) |
| Operating System | Real-time operating system (RTOS) running GE proprietary control software |
4. Application Areas
| Industry | Typical Applications |
|---|---|
| Power Generation | Start/stop control, speed governing, protection, and synchronization for GE gas turbines (9FA, 9HA, 7FA, etc.) |
| Oil & Gas / Petrochemical | Driving large compressors, pump sets; providing power and process control |
| Pipeline / Compression | Monitoring and protection of gas-turbine-driven compressor units |
| Marine Propulsion | Shipboard gas turbine control |
| Other Industrial | High-reliability, high-performance drive control applications |
5. Position in System Architecture
In the GE Mark VI control system, the IS215UCCCS05A belongs to the Control Layer. A typical system architecture is shown below:
1┌──────────────────────────────────────────┐
2│ Operator Station / Engineer Workstation │
3├──────────────────────────────────────────┤
4│ Ethernet / Modbus Communication │
5├──────────────────────────────────────────┤
6│ ★ IS215UCCCS05A (VME Controller) │ ← Core control logic
7├──────────────────────────────────────────┤
8│ VME Bus Backplane │
9├──────────┬──────────┬────────┬───────────┤
10│ Analog │ Digital │ Serial │ Power │
11│ I/O │ I/O │ Comm │ Modules │
12│ Modules │ Modules │ Modules│ │
13└──────────┴──────────┴────────┴───────────┘
14 ↓
15 Field Sensors / Actuators
16
Typical companion modules include:
- IS215UCCCM04A / IS215UCCCS04AB — Communication module
- IS420UCSBH1A / IS420UCSBH4A — Serial I/O module
- IS220UCSAH1A — Analog I/O module
- IS215WEMAH1A — Motor management module
- V7768-320001 / V7768-312001 — Bus converter / interface module
6. Key Features & Advantages
| Feature | Description |
|---|---|
| ✅ High Reliability | Industrial-grade design with redundant configuration support; suitable for 24/7 continuous operation |
| ✅ High Performance | Powerful real-time processing capable of handling large numbers of I/O points and control loops simultaneously |
| ✅ Modular Design | VME standard slot format — easy to maintain, upgrade, and expand |
| ✅ Mature Ecosystem | Mark VI has enormous global installed base; spare parts are abundant and technical documentation is comprehensive |
| ✅ Good Compatibility | Conforms to the international VME bus standard; can interoperate with multi-vendor VME modules |
7. Availability & Status
Based on current market information:
| Item | Detail |
|---|---|
| Status | Obsolete (discontinued) — classic Mark VI platform product |
| Supply | Still widely available as new old stock (NOS) or refurbished units due to the large global installed base |
| Key Suppliers | Major industrial automation spare parts distributors (e.g., Shanxi Runsheng, Shenzhen Changxin Automation, etc.) |
| Pricing | Premium pricing due to obsolescence; typically ranges from several thousand to tens of thousands of RMB depending on condition and quantity |
| Replacement Path | GE has introduced the EX2100 / EX2000 series as the successor platform; however, the vast majority of legacy Mark VI systems remain in service, and the IS215UCCCS05A will remain irreplaceable in the near term |
8. Summary
The IS215UCCCS05A is the core VMEbus controller module of the GE Mark VI gas turbine control system, responsible for control algorithm execution, data acquisition, and system communications. It serves as the “central nervous system” for control of large rotating machinery in power generation, petrochemical, and other heavy industries. Although discontinued, its massive global installed base continues to make it one of the most sought-after spare parts in the industrial automation market.
For detailed datasheets, pin definitions, or compatibility verification with your existing system, please contact a GE authorized service provider or a specialized industrial control spare parts supplier.


