GE DS3815PAHB1A1A Speedtronic Mark IV Processor Interface Board

Product Description

The DS3815PAHB1A1A is a multi-function processor and communication interface board for GE Speedtronic Mark IV turbine control system. It executes core control logic, handles high-speed data exchange between control racks, and synchronizes signals with operator stations. It uses EPROM for firmware storage and RAM for real-time data buffering. This board is widely used in Frame 5, Frame 6 and Frame 7 gas turbines and steam turbines, and it is powered by the matching DS3800NB1A power board in the Mark IV rack.

Features

• Part No: DS3815PAHB1A1A, belongs to GE Speedtronic Mark IV platform
• Combined processor and interface function for turbine control logic
• Memory: EPROM for firmware, RAM for real-time data cache
• Communication: RS232 serial port and GE proprietary backplane bus
• Power supply: +5VDC, ±15VDC, supplied by DS3800NB1A
• Onboard self-diagnosis, fault status indicators and watchdog circuit
• Conformal coating for anti-humidity and anti-corrosion in power plant cabinet
• Operating temperature: 0°C ~ +60°C
• Standard plug-in Eurocard form factor for Mark IV chassis
• Supports redundant control architecture for turbine safety protection

Applications

• Frame 5 / Frame 6 / Frame7 gas turbine control and protection cabinet
• Steam turbine governor and safety interlock system
• Power plant legacy Mark IV system maintenance and spare replacement
• Oil & gas mechanical drive turbine control retrofit
• Data communication between turbine controller and operator HMI

FAQ

Q: What does the suffix 1A1A mean?
A: 1A1A is the hardware revision code, replacement spare parts need to match the revision to avoid compatibility issues.

Q: What is the matching power board?
A: DS3800NB1A is the dedicated power supply regulator board for this card.

Q: Is DS3815PAHB1A1A discontinued?
A: Yes, Speedtronic Mark IV series is end-of-life, only available as surplus and refurbished tested spare parts.

Q: What is the difference between DS3815PAHB1A1A and DS3815PAHB2A1A?
A: DS3815PAHB2A1A is upgraded version with larger memory capacity, different firmware support.