Category: FT8 Control System

ART246 – FT8 – How to locate “Tunables Tags” in Control Assistant

  • September 4, 2024
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Article Reference – ART246 FT8 instruments don’t have “Zero” and “Span” calibration adjustments, therefore the adjustment is done in the control software called “GAP”. This article is going to describe how to locate the adjustment addresses called “TUNABLES”, so that you can calibrate the control signal. The FT8 Electrical Schematic … Continue Reading →

ART245 – FT8 Battery charger ground faults

  • June 26, 2024
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ARTICLE REF – ART245 This is the front panel of a Hindle Power AT30 battery charger, used for 24 and 125 VDC batteries. It is common to have a positive or negative ground alarm, indicating that some wiring is touching ground in one of the distribution circuits. These can be … Continue Reading →

ART239 – FT8 Flyback Diodes

ARTICLE REF – ART239 This video is going to discuss the use of Flyback Diodes, why they are important, and how to test them. Note that these are used on Solar Turbines as well as Pratt & Whitney FT8. Subtitles available in English – Spanish – Turkish. https://vimeo.com/949327423

ART238 – FT8 Communicate with DVP driver

  • June 19, 2024
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ARTICLE REF – ART238 The DVP driver was introduced to the FT8 mainly due to issues the old Em driver which was having with the Gas Valve. When a unit shut down, the power was not automatically removed from the driver. The driver constantly sends signals to the gas fuel … Continue Reading →

ART005 – FT8 – Stroking gas fuel valve FCV1101

  • June 18, 2024
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ARTICLE REF – ART005 During commissioning of the fuel gas system the gas valves were stroked from the ICE calibration screen and found that each one stopped at 90% with a “valve failure” annunciated when the command signal reached 97%. It was expected that the valve would move the complete … Continue Reading →

ART004 – FT8 – Gas fuel valve driver fault

  • June 18, 2024
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ARTICLE REF – ART004 Some years ago there was an issue on a site where an operator got an alarm “Gas Fuel Valve”. The alarm would not reset by software resetting from the ICE display and it was decided to change the gas fuel valve. The control system was powered … Continue Reading →

ART235 – FT8 Backup overspeed TACHPAK 30 – Caution

  • April 24, 2024
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ARTICLE REF – ART235 This is the older version backup overspeed monitor which is still in service but no longer being used in new production. It has been replaced by the TACHPAK 30 which is a two channel overspeed monitor. The TACHPAK 3 has a single channel and monitors either  … Continue Reading →

ART214 – FT8 Control System Training

  • October 4, 2023
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Article Ref ART214 FT8 Control System Training  Part 1 – Saving tunables Part 2 – IGV & VSV Calibration Part 3 – Hydraulic Starter Spin Logic  https://vimeo.com/860928403?share=copy