Description
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IS200VPWRH1AFA- Turbine Protection Board is available in stock which ships the same day.
IS200VPWRH1AFA- Turbine Protection Board comes in UNUSED as well as REBUILT condition.
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About IS200VPWRH1AFA
The printed circuit board IS200VPWRH1AFA module consists of two IS200VPWRH1A boards. During operation, this model is typically used in conjunction with gas or steam turbine prime movers in a triple module redundant architecture. When communication with other modules is required, it is done through the IONet function. Please note that when this module is used in a triple module redundant system, a protective backup module may be used to ensure that the circuit board does not experience any faults that may hinder module performance.
There are multiple LEDs on the front panel of this module, labeled as status, operation, and fault. The above LEDs are used to indicate the operation status of the circuit board. In addition to the LED, the main components on the front panel of the IS200VPWRH1AFA circuit board include four sub-D pin connectors, an Ethernet port, a three pin female plug connector, etc.
When designing this model, it was designed as a sub component or sub board. When operating as a sub board, it will be connected to the IS200VPWRH1AFA board.
As mentioned above, IONet function is a communication method. Another communication method that can be used is the unit data highway. Unit data highway or more commonly UDH, the UDH function allows the VPWR module to communicate not only with models in the Mark VI system, but also with Historian software, HMI, static starters, and more. For all potential communications, please refer to the GER-4193A Speedtronic Mark VI Turbine Control System Guide.
Function description:
IS200VPWRH1AFA is a turbine protection board manufactured and designed by General Electric, belonging to the Mark VI series used in GE Speedtronic gas turbine control systems. The turbine protection board (VPRO) and connected terminal boards (TPRO and TREG) provide independent emergency overspeed prevention systems. The trip solenoid valve in the protection system is controlled by TREG through triple redundant VPRO boards, which are installed in modules outside the turbine control system. The chart depicts the wiring from TPRO and TREG terminal boards to VPRO.
The emergency trip function is provided by the VPRO board in the protection module P. The TREG and TRPG terminal blocks can connect up to three trip solenoids. The solenoid is supplied with 125 V DC positive pole by TREG and negative pole by TRPG. The turbine may trip on either board. The emergency overspeed protection and emergency stop function are provided by VPRO. It manages three trip solenoids, three voting inputs, and 12 relays on TREG, nine of which are divided into three groups.
Installation:
Close the VME processor I/O rack.
After positioning the edge connector by hand, slide the VPRO board into place.
Tighten the fixing screws at the top and bottom of the front panel.
Open the VME rack and check the diagnostic light on the top of the front panel.
Surgery:
The main function of the protection module is to use three VPRO boards for emergency overspeed (EOS) protection of the turbine. VPRO also includes nine thermocouple inputs, three analog current inputs, and backup synchronous check protection, mainly used to protect the gas turbine exhaust temperature from being too high.
Three completely different and independent VPRO boards (designated as R8, S8, and T8) ensure that the protection module always has triple redundancy (originally named X, Y, and Z). It is possible to shut down and replace any one of the plates while the turbine is running without compromising the protection system. Each board has a unique I/O controller. Through communication, test commands can be sent from the controller to the protection module, and both the operator interface and the controller can monitor EOS system diagnostics. The VPRO board is the brain of the system, responsible for maintaining communication.
Power supply:
Each VPRO board has an onboard power supply. Using 125 V DC power from cabinet PDM can generate 5 V and 28 V voltages. Therefore, in order to achieve higher reliability, the complete protection module includes three power sources. The J2 power cord and trip solenoid valve are the only connections to the control module, as VPRO is only responsible for controlling TREG. When the turbine trips in the simplex system, the third cable will transmit the trip signal from J1 to the TSVO terminal board, which operates the servo valve clamp.
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