IS200TEFVH1A - Electric Fuel Valve Terminal Board

SPECIFICATIONS:

Part Number: IS200TEFVH1A
Manufacturer: General Electric
Series: Mark VIe
Product Type: Electric Fuel Valve Terminal Board
Power Inputs: 10 v
Mounting: DIN-rail mounting
Operating temperature: 0 to 55°C
Size: 16.51 cm High x 17.8 cm
Repair: 3-7 Day
Availability: In Stock
Weight: 2 lbs
Country of Origin: United States
Manual: GEH-6721L

FUNCTIONAL DESCRIPTION:

IS200TEFVH1A is an Electric Fuel Valve Terminal Board manufactured and designed by General Electric as part of the Mark VIe Series used in GE Distributed Control Systems. The Electric Fuel Valve Terminal Board serves as an Ethernet gateway, linking the Mark VIe I/O Ethernet network with an electric fuel valve interface module. This module communicates via Ethernet Global Data (EGD) and is known as a Digital Valve Positioner (DVP). The TEFV board features a processor common to all Mark VIe I/O packs. It includes two RJ45 Ethernet connectors: one connects to the I/O Ethernet network, while the other connects directly to the DVP. Additionally, a 3-pin connector provides power to the board.

INSTALLATION:

• Directly plug three PEFVs, for triple modular redundancy (TMR), into the terminal board connectors.

• Mechanically secure the packs using the threaded inserts adjacent to the Ethernet ports. The inserts connect to a mounting bracket specific to the terminal board type. The bracket should be adjusted so there is no right angle force applied to the DC-37 pin connector between the pack and the terminal board. This adjustment is required once during the life of the product.

• Plug one Ethernet cable into the I/O Ethernet network. Connect the other Ethernet cable to the corresponding network connector on the Woodward DVP. The pack will operate with connections made to either port. The pack must reboot if the connections are modified. Standard practice is to connect ENET1 to the network associated with the I/O Ethernet network.

• Power is applied to the connector on the side of the pack. It is not necessary to insert the connector with the power removed from the cable. PEFV has inherent soft-start capability that controls current inrush on power application.

OPERATION:

• The processor board connects to an acquisition board tailored to the I/O pack or module's specific functions. Upon applying input power, the soft-start circuit gradually increases the voltage available to the processor board.

• Local power supplies are sequenced, and the processor reset is released. The processor then performs self-test routines and loads application code from flash memory, which is specific to the I/O pack or module type.

• The application code verifies the board ID information to ensure compatibility between the application code, acquisition board, and terminal board. Upon a successful match, the processor initiates Ethernet communication by requesting a network address using the dynamic host configuration protocol (DHCP) and the unique ID read from the terminal board.

• After Ethernet initialization, the processor programs the onboard logic runs the application and activates the acquisition board for operation. The processor application code includes the logic required to operate the I/O pack using one or two Ethernet inputs.

• When using two Ethernet inputs, both network paths remain active continuously. If one network fails, the other will continue to function without disrupting the I/O pack's operation, with the failure indicated through the active network connection.

• This setup is more fault-tolerant compared to traditional hot-backup systems, where the secondary port only activates after detecting a primary port failure. The Ethernet ports on the processor automatically negotiate between 10 MB/s and 100 MB/s speeds and support both half-duplex and full-duplex operation.

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FREQUENTLY ASKED QUESTIONS:

What is the Electric Fuel Valve Terminal Board?

The Electric Fuel Valve Terminal Board is an Ethernet gateway that connects the Mark VIe I/O Ethernet network to an electric fuel valve interface module, known as the Digital Valve Positioner (DVP).

What is Ethernet Global Data (EGD)?

Ethernet Global Data (EGD) is a communication protocol used to exchange data over an Ethernet network, allowing the terminal board to interface with the Digital Valve Positioner.

What is the role of the processor on the Electric Fuel Valve Terminal Board?

The processor manages the communication between the Mark VIe I/O network and the Digital Valve Positioner, ensuring proper data exchange and operation.