Overview
The GE IS420UCECH1B-A, also cataloged as the IS420UCECH1B-A Controller / Port Expansion Module, operates as a dedicated hardware component for controller communication expansion and execution tasks within the GE SPEEDTRONIC Mark VIe / Mark VIeS control system network.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IS420UCECH1B-A |
| Brand | General Electric (GE) |
| Product Series | SPEEDTRONIC Mark VIe / Mark VIeS |
| Module Type | Controller / Port Expansion Module |
| Catalog Number | IS420UCECH1B-A |
| Base Model | IS420UCECH1B |
| Origin | United States |
| Weight | Approx. 0.3 kg |
| Dimensions | Approx. 3.5 cm x 13 cm x 13.5 cm |
| Power Consumption | 28 VDC, 1.1 A input current |
| Mounting Type | Mark VIe cabinet rack-mounted modular installation |
| Application | Turbine control, controller communication expansion, BOP control systems |
GE Mark VIe Industrial Network and Firmware Compatibility
The IS420UCECH1B-A module supports GE Mark VIe control architecture through internal controller communication interfaces and modular hardware integration. Furthermore, the module uses GE industrial control firmware compatibility to maintain communication between controller assemblies, I/O networks, and system-level processing units.
The module supports configurable Mark VIe system architectures, including simplex, dual, and TMR hardware arrangements. In addition, its design allows integration with Mark VIe cabinet structures where controller synchronization and network data exchange require defined electrical connections.
Frequently Asked Questions
Q: What is the primary function of the GE IS420UCECH1B-A module?
A: The IS420UCECH1B-A functions as a controller and port expansion module within the Mark VIe / Mark VIeS platform. It manages hardware communication expansion and controller-side interface functions.
Q: Does the IS420UCECH1B-A support redundant Mark VIe configurations?
A: The module is designed for Mark VIe system configurations that include simplex, dual, and TMR architectures. The actual redundancy operation depends on the complete cabinet configuration and installed firmware.
Q: What power input does the IS420UCECH1B-A require?
A: The module operates from a 28 VDC supply input and requires approximately 1.1 A current according to the provided technical data.
Field Installation Guidelines
- Install the IS420UCECH1B-A inside the designated GE Mark VIe control cabinet rack position.
- Verify DC supply polarity before connecting field power wiring.
- Maintain proper grounding between the cabinet chassis and control system protective earth.
- Route communication wiring separately from high-voltage power cables to reduce electrical interference.
- Check connector seating and mechanical locking features before system startup.
- Confirm firmware compatibility with the installed Mark VIe controller configuration before commissioning.

















