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Part No.: IS215VAMBH1A
Manufacturer: General Electric
Product Type: Acoustic Monitoring Card Assembly
Series: Mark VI
The IS215VAMBH1A is an acoustic monitoring card assembly module developed by GE under Mark VI series. It has two TAMB boards that provide eighteen channels of signal conditioning and eighteen channels of acoustic monitoring. This board, along with one or two TAMB terminal boards, supports acoustic monitoring for frame 6, 7, or 9 gas turbines.
Current-limited +24 V dc and +24 V dc power supply outputs are provided by each channel. For the PCB sensors, a constant current source is attached to the SIGx line. When the signal is a logic-level low through an output on the VAMB, the input signal, CCSELx, is False. The continuous current output must be deselected until the configuration parameters are loaded, therefore the output must be False (logic-level low) upon power-up.
The VAMB program has the following features:
Any gain or offset mistake caused by initial component variations is eliminated by using the A/D compensation function. For the A/Ds it controls, the firmware has an auto-calibration capability. Each of the 18 analog channels is compared to a gold standard A/D channel in the auto-calibration feature. A standard high-precision voltage reference and the A/D common are used to calibrate the gold standard A/D channel.
The channel gain in the hardware is controlled by the configuration parameter Gain defined for each channel. This enables the amplification of low-level signals in the analog to digital conversion gear to improve resolution. There are four gain options: 1, 2, 4, and 8. The gain setup is written to the FPGA VSPA input amplifier 4x and 2x gain control registers via the channel control. Because the signal is divided by the gain factor in the firmware to result in a net gain of 1 for the signal regardless of the gain factor used, the signal level estimated by the VAMB firmware will not change with a change in the Gain parameter.
What is IS215VAMBH1A?
The IS215VAMBH1A is an acoustic monitoring card assembly module developed by GE under Mark VI series.
How to Obtain IS215VAMBH1?
World of Controls provides IS215VAMBH1A as well as other turbine control products. Contact WOC.