Basic Information

• Model: IS420UCSBH4A

• Brand/Series: GE General Electric, Speedtronic Mark VIe/VIeS Control System, UCSB Universal Stand-Alone Controller Module

• Core Purpose: The main controller for Mark VIe, EX2100e, and LS2100e systems, responsible for real-time control computation, data processing, I/O communication and safety logic execution. It has no local I/O and connects to I/O packs via the dedicated IONet Ethernet.

Key Specifications

• Processor: Intel EP80579, 1066 MHz clock speed, high-performance real-time computing capability

• OS: QNX Neutrino real-time multitasking operating system, ensuring millisecond-level control response

• Power: Peak 28.7W, nominal 17.3W; no internal battery, no jumper settings, fanless / redundant fan options

• Operating Temp: -30°C to +65°C, industrial wide-temperature design for harsh field environments

• Safety Certifications: IEC 61508 SIL 2/SIL 3, UL E207685 Class I Div 2 Groups A-D (suitable for hazardous locations)

• Communication: IONet dedicated industrial Ethernet for connecting Mark VIe distributed I/O modules, redundant architecture with no data loss on single-point failure

Core Functions

1. Real-Time Control & Computation: Executes closed-loop control, speed/load regulation and protection logic for gas/steam turbines and excitation systems; supports TMR triple modular redundancy with failover <50ms.

2. Distributed I/O Interconnection: Communicates with PVIB, TVBA, WNPS and other I/O daughterboards/terminals via IONet, collecting vibration, temperature, pressure, speed signals and issuing control commands.

3. Safety & Diagnostics: Integrated fault diagnosis, condition monitoring, overcurrent/overvoltage protection; supports Safety Instrumented System (SIS) functions to meet safety control requirements for power plant/industrial rotating machinery.

4. System Compatibility: Compatible with Mark VIe, Mark VIeS, EX2100e excitation and LS2100e control systems; modular installation for easy expansion and maintenance.

Typical Applications