Overview
Configured for application-specific control execution in the GE Mark VIe control system, the GE IS420UCSCH1A (IS420UCSCH1A UCSC Controller Module) provides direct processing and network control functions through a QNX real-time operating environment.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IS420UCSCH1A |
| Brand | General Electric (GE) |
| Product Type | UCSC Controller Module |
| Series | Mark VIe Control System |
| Origin | USA |
| Weight | 1.5 kg |
| Dimensions | 5.5 x 15.4 x 20.2 cm |
| Operating Temp | Not specified |
| Power Consumption | Maximum 31 W |
| Processor | AMD GX-412HCGE412GHCJ44JB |
| CPU Frequency | 1.2 GHz |
| CPU Cores | 4 |
| Mark VIe Cores | 2 |
| L2 Cache | 2 MB |
| Operating System | QNX Neutrino RTOS Version 6.5 or 7.1 |
| Memory Type | DDR3 – 1333 |
| Flash Storage | 40 GB SSD pSLC (16 GB used) |
| Console Interface | RJ-45 console interface (adapter required) |
| Additional Ports | 2 x USB 2.0 |
| Minimum Voltage | 18 V |
| Nominal Voltage | 24/28 V |
Industrial Control Network and Firmware Compatibility
The IS420UCSCH1A operates as a Mark VIe UCSC controller without integrated application I/O channels. Instead, the controller receives input data through connected I/O networks when configured within a redundant controller arrangement.
The module executes control applications through the QNX Neutrino real-time operating system. Additionally, the controller supports firmware flash compatibility for Mark VIe software environments, allowing application execution and controller management functions within the Speedtronic architecture.
The GE Mark VIe platform uses deterministic industrial communication methods for controller and I/O synchronization. Therefore, the IS420UCSCH1A supports distributed control architectures where multiple controllers share networked I/O data.
Frequently Asked Questions
Q: Does the IS420UCSCH1A provide direct local I/O channels?
A: No. The IS420UCSCH1A is a controller module without onboard application I/O capability. It receives process data through connected Mark VIe I/O networks.
Q: Can the IS420UCSCH1A operate in a redundant controller configuration?
A: Yes. The module can be installed in a redundant controller set, where each controller receives available I/O network data from the connected system architecture.
Q: Which operating system does the IS420UCSCH1A use?
A: The controller operates with the QNX Neutrino real-time operating system, supporting versions 6.5 or 7.1 according to system configuration.
Field Installation Guidelines
- Install the controller module inside the designated Mark VIe control cabinet or approved enclosure.
- Verify the 24/28 VDC power supply connection before energizing the module.
- Maintain proper grounding practices for cabinet chassis and communication cable shields.
- Separate power wiring from communication cables to reduce electrical interference.
- Use the specified console adapter when accessing the RJ-45 maintenance interface.
- Confirm firmware compatibility before replacing an installed controller module.
- Check redundant controller configuration settings after installation to ensure correct network synchronization.

















