Description

Product Overview

Product Name: I/O Pack Backplane / Distribution Board

Model Number: EVPBDP0001

Manufacturer: GE Energy (General Electric)

System Compatibility: Mark VIe Turbine Control System (Speedtronic)

The GE EVPBDP0001 is a fundamental passive hardware component within the Mark VIe turbine control system architecture. It is not a programmable controller or an I/O module itself, but rather a printed circuit board (PCB) that functions as a Backplane or Baseboard.

Its primary purpose is to provide the physical mounting platform, electrical interconnection, and signal routing for the active components of a Mark VIe I/O Pack. An I/O Pack is a modular enclosure that houses various types of input and output modules (e.g., digital, analog, relay) which interface between the turbine’s sensors/actuators and the central controller.

Key Features

Passive Interconnection Hub: Provides the physical slots and electrical pathways (traces) that allow different modules within an I/O Pack to communicate with each other and with the central controller.
Modular Design: Allows for the configuration of I/O Packs with specific combinations of modules tailored to the turbine’s needs (e.g., more analog inputs for temperature sensors, more relay outputs for valves).
Integrated Connectors: Features standardized connectors for plugging in various I/O modules (e.g., analog input cards, digital output cards, communication modules) and for external network and power connections.
Network Interface: Includes the necessary circuitry to connect the I/O Pack to the Mark VIe’s core high-speed Ethernet network (often called the “UDH” or “Unit Data Highway”).
Robust Construction: Built as a durable PCB to withstand the industrial environment of a power plant, including resistance to vibration and temperature variations.
EVPBDP0001 EVPBDP032

Technical Specifications

The following table details the key technical parameters and characteristics of the EVPBDP0001 backplane.

Parameter	Specification
Component Type	Passive Backplane / Baseboard for I/O Pack
Model Number	EVPBDP0001
Compatible System	GE Mark VIe Speedtronic Turbine Control System
Form Factor	Printed Circuit Board (PCB) designed to mount inside a metal I/O Pack enclosure.
Primary Function	Provides electrical interconnection and mechanical mounting for I/O modules.
Supported I/O Modules	Designed to accept various Mark VIe series I/O cards (e.g., analog in, analog out, digital in, digital out, thermocouple, RTD).
Network Connection	Provides port(s) for connection to the Mark VIe’s Ethernet-based control network.
Power Distribution	Distributes power from the external power supply input to all the mounted I/O modules.
Communication Bus	Hosts the internal bus that allows data transfer between the I/O modules and the network interface.

System Architecture & Role

The EVPBDP0001 is a core part of the Mark VIe’s distributed I/O architecture. Its role can be understood in this context:

Enclosure: The EVPBDP0001 board is mounted inside a metal cabinet called an I/O Pack.
Module Installation: Various active I/O modules (e.g., a card for reading 4-20mA signals) are plugged directly into the slots on the EVPBDP0001 backplane.
Interconnection: The backplane’s circuitry connects all these modules together and to a network interface module (e.g., an EHMI communication card).
Network Integration: The network module then connects the entire I/O Pack to the rest of the Mark VIe system via an Ethernet network, allowing the central controller (e.g., a controller with a part number like EX2100e) to read inputs and send outputs through this remote pack.

Typical Applications

This backplane is used exclusively in GE Mark VIe control systems for gas and steam turbines across various industries:

Power Generation: Combined-cycle power plants, simple-cycle peaker plants.
Oil & Gas: Compressor station drive control, mechanical drive turbines.
Industrial Plants: Providing prime power and steam for large industrial facilities.

Its purpose is to create a localized junction point for field wiring (sensors and actuators) that is remote from the main control cabinet, simplifying wiring and improving signal integrity.

Important Notes

Not a Standalone Product: The EVPBDP0001 has no function on its own. It is entirely dependent on being populated with specific I/O modules and installed in a complete Mark VIe system.
Configuration: The backplane itself requires no configuration. However, the I/O modules plugged into it must be configured within the Mark VIe’s engineering toolset (ToolboxST).
Replacement: Replacing this board is a significant task, as it requires removing and re-installing all I/O modules and re-terminating all field wiring. This is typically only done in the event of physical damage.
Safety Warning: Work on turbine control system components should only be performed by qualified personnel trained on GE Speedtronic systems. Proper Lockout-Tagout (LOTO) procedures must always be followed to de-energize the system before handling any components.

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