Description

IS200VVIBH1C – Vibration monitoring board is available in stock and will be shipped on the same day.

IS200VVIBH1C – The vibration monitoring board is in an unused and rebuilt state.

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　　Product Description

IS200VVIBH1C is a board component manufactured by GE for the Mark VI system. Mark VI is one of the steam and gas turbine management systems released by GE under the name Speedtronic in the 1960s, 1970s, 1980s, and 1990s. As one of the last systems released in this series, Mark VI is also one of the most advanced systems. It is built using the TMR (Triple Redundant Modular) architecture and has a PC based HMI (Human Machine Interface) running on the Windows platform. This HMI PC contains software specifically designed for turbine management, including fully programmable maintenance tools. IS200VVIBH1C is used as a vibration monitoring card and can process vibration probe signals from up to 14 probes connected to DVIB or TVIB terminal boards. These are used to measure differential expansion, rotor eccentricity, vibration, or rotor axial position. For more information on probe functions and settings,

 

 

please refer to the Mark VI Turbine Control System Guide (GEH-6421). IS200VVIBH1C has a single slot panel connected to a component dense circuit board. The panel has only three components, all located at the top of the casing; These are LED indicators marked with run/fail/status. The surface of IS200VVIBH1C includes two backplane connectors (P1 and P2) located at the rear edge of the board. The board also has four other connectors designed with conductive traces and points. The surface of the circuit board includes resistors, diodes, capacitors, and inductor coils/magnetic beads. Some of these components also appear on the back of the circuit board. The integrated circuit located on IS200VVIBH1C includes FPGA, RAM, and SRAM chips. The installation program can be found in the GE publications mentioned above. IS200VVIBH1C is a vibration monitoring board developed by General Electronics under Mark VI. The vibration detection signal from the TVIB or DVIB terminal board is processed by the vibration monitoring board. Up to 14 probes can be directly connected to the terminal board. For VVIB processor boards, two TVIB can be connected. VVIB digitizes various vibration signals and transmits them to the controller through the VME bus. For shaft vibration monitoring, the Mark VI system uses Bently Nevada probes. The vibration probes listed below are compatible: during the installation of IS200VVIBH1C near velocity acceleration earthquake,

 

 

V-shaped plates should be installed, please follow these instructions. Close the VME processor rack. To install the edge connector of the circuit board, slide them in and push the top and bottom levers in by hand. Tighten the external screws at the top and bottom of the front panel. The IS200VVIBH1C operating terminal board supports Bently Nevada Proximitor, Seismic, Accelerometer, and Velomitor probes. The vibration probe is powered by the VVIB board in simplex or TMR mode.

The detection signals are returned to VVIB, where they are converted by A/D and sent to the controller through the VME bus. For the front-end power supply, VVIB provides -28 V DC power to the terminal board. The diode high selection circuit in the TMR system selects the highest -28 V DC bus for redundancy. Separate excitation source, -23 to -26 V DC, short circuit protection, provided by voltage regulator. During the discrete time period, the probe input samples at a high speed of up to 4600 samples per second. Accumulate the maximum and minimum values, and use the difference (max min) to calculate vibration and filter the results. The generated peak to peak voltage is scaled to generate engineering unit (EU) (peak to peak) displacement and EU (pk) velocity inputs from accelerometers, integrated outputs, seismic, and Velomitors for the input of the proximitor. The vibration monitoring on the vibration monitoring firmware VVIB is divided into three parts: channels 1-3: position data from the proximitor, broadband vibration data from the proximitor, accelerometer with integrated output, Velomitors, and Semimics can all be used on channels 1 to 3. When using a keyphasor probe, 1X and 2X information can be extracted from the axial vibration information viewed by the proximitor In LM applications using accelerometers, tracking filters are typically used. Channels 4-8: Position information from proximitors, broadband vibration information from proximitors, Velomitors, and Semimics can all be found on channels 4-8. When using a keyphase probe, 1X and 2X information can be extracted from the axial vibration information viewed by the proximitor. Channels 9-12:

 

 

Only location information is broadcasted on channels 9-12. Channel 13: Channel 13 supports position feedback and keyphase feedback. Broadband vibration filtering: If input channels 14 to 21 are designated as vibration channels, the broadband vibration filtering function operates at 4.6 kHz and 2.3 kHz, respectively. The FPGA that controls the A/D and multiplier circuits provides vibration input for this purpose. Gap or position filters are low-pass filters with two poles and an 8 Hz cutoff frequency. The Gap Scaling and Limit Check functions use the output of a gap filter in volts. Broadband vibration information can be reshaped or adjusted based on the FilterType configuration parameters. For Seismic and Velomitor sensor types, use low-pass, bandpass, or high-pass filter types. All other sensor types use FilterType as None. Through the Filtrlpattn parameter, low-pass filters can be configured with 2, 4, 6, or 8-pole attenuation behavior. Filtrlocautoff is a 3 dB cutoff frequency that is also adjustable. High pass filters can also be configured with 2, 4, 6, and 8 poles to improve the attenuation characteristics of the filter through the Filtrhpattn parameter. The cutoff frequency Filtrhpcutoff can be configured. Broadband filtered vibration output Vfout has minimum/maximum peak detection function. For keyphaser based speeds greater than 12 rpm, the minimum/maximum detection capture window is 160 milliseconds wide. The goal is to collect vibration data for at least two cycles to obtain accurate peak to peak calculations. The unfiltered broadband vibration output is affected by the second minimum/maximum peak detection function. Vmax and Vmin outputs are used to clamp the filtered vibration output peak to peak. Diagnostic diagnosis performs high/low (hardware) input signal limit checks and high/low system (software) limit checks. On site, software restriction checks can be changed. If one of the X or Y probe pairs exceeds its limit, a probe malfunction, alarm, or trip condition may occur. In addition, if a probe error is detected based on the DC component, the application software will avoid vibration tripping (AC component). IS200VVIBH1C features 26 probes with two TVIB board probes, with a power of -24 V dc from the -28 V dc bus; Each probe power supply is limited by current, and each sensor has a 12 mA load buffered output

The signal amplitude accuracy of the Bently Nevada 3500 vibration analysis system is 0.1%.

Frequently asked questions

What is IS200VVIBH1C?

IS200VVIBH1C is a vibration monitoring board developed by General Electronics under Mark VI.

What is the function of a component?

The vibration monitoring board processes vibration detection signals from the TVIB or DVIB terminal board.

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