{"id":2435,"date":"2021-12-23T16:19:00","date_gmt":"2021-12-23T16:19:00","guid":{"rendered":"https:\/\/www.axcontrol.com\/blog\/?p=2435"},"modified":"2021-12-08T12:18:48","modified_gmt":"2021-12-08T12:18:48","slug":"speedtronic-mark-vi-how-it-monitors-gas-turbines","status":"publish","type":"post","link":"https:\/\/www.axcontrol.com\/blog\/2021\/speedtronic-mark-vi-how-it-monitors-gas-turbines\/23\/12\/","title":{"rendered":"Speedtronic Mark VI: How It Monitors Gas Turbines"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img data-attachment-id=\"2436\" data-permalink=\"https:\/\/www.axcontrol.com\/blog\/2021\/speedtronic-mark-vi-how-it-monitors-gas-turbines\/23\/12\/is200aepah1a\/\" data-orig-file=\"https:\/\/www.axcontrol.com\/blog\/wp-content\/uploads\/2021\/11\/IS200AEPAH1A.jpg\" data-orig-size=\"1200,900\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"IS200AEPAH1A\" data-image-description=\"&lt;p&gt;IS200 board sold by AX control for industrial use&lt;\/p&gt;\n\" data-image-caption=\"\" data-medium-file=\"https:\/\/www.axcontrol.com\/blog\/wp-content\/uploads\/2021\/11\/IS200AEPAH1A-300x225.jpg\" data-large-file=\"https:\/\/www.axcontrol.com\/blog\/wp-content\/uploads\/2021\/11\/IS200AEPAH1A-1024x768.jpg\" decoding=\"async\" loading=\"lazy\" width=\"1024\" height=\"768\" src=\"https:\/\/www.axcontrol.com\/blog\/wp-content\/uploads\/2021\/11\/IS200AEPAH1A-1024x768.jpg\" alt=\"Mark VI circuit board. IS200AEPAH1A \n\" class=\"wp-image-2436\" srcset=\"https:\/\/www.axcontrol.com\/blog\/wp-content\/uploads\/2021\/11\/IS200AEPAH1A-1024x768.jpg 1024w, https:\/\/www.axcontrol.com\/blog\/wp-content\/uploads\/2021\/11\/IS200AEPAH1A-300x225.jpg 300w, https:\/\/www.axcontrol.com\/blog\/wp-content\/uploads\/2021\/11\/IS200AEPAH1A-768x576.jpg 768w, https:\/\/www.axcontrol.com\/blog\/wp-content\/uploads\/2021\/11\/IS200AEPAH1A.jpg 1200w\" sizes=\"(max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 1362px) 62vw, 840px\" \/><figcaption><a href=\"https:\/\/www.axcontrol.com\/automation\/ge-boards\/mark-vi-is200\/IS200AEPAH1A\">Mark VI IS200AEPAH1A <\/a><\/figcaption><\/figure>\n\n\n\n<p>Gas turbine protection systems are complex animals.&nbsp; They have many subsystems that must run at each stop and startup.&nbsp; Emergency systems back these up, kicking in when necessary.<\/p>\n\n\n\n<p>The most difficult thing about setting up control systems for gas turbine systems is their variability.&nbsp; Successful protection systems have to adjust from project to project, but that\u2019s not easy.&nbsp; A flexible-by-design approach helps.&nbsp; The modular nature of the Speedtronic Mark VI helps meet this need.&nbsp;<\/p>\n\n\n\n<p>Commonly, gas turbine failures are caused by sensor failure or wiring failure of the sensor protection system.&nbsp; These detect alarms. &nbsp; When protection is completely disabled, the turbine can trigger.&nbsp; This allows the turbine to respond to over-temperature and speeding settings.&nbsp;&nbsp;<\/p>\n\n\n\n<p>Many types of gas turbines use Speedtronic Mark VI control systems.&nbsp; But for the rest of this blog post, we\u2019re going to consider a single-cycle double-shaft mechanical drive system with a gas turbine using an axial compressor.&nbsp;&nbsp;<\/p>\n\n\n\n<p>Regulation of such a turbine occurs through start-control functions.&nbsp; Sensors monitor speed, exhaust temperature, compressor discharge pressure, and other variables; this dictates unit operating conditions.&nbsp; When a modification is needed because of environmental or load changes regulation occurs through supervision control modules within the gas turbine system.&nbsp;&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Control: From Zero to Operating Speed<\/h2>\n\n\n\n<p>Control begins when the turbine passes from \u201cspeed zero\u201d to its safe operating speed.&nbsp; This happens through proper fuel supply to initiate flame speed while minimizing the fatigue cycle down.&nbsp; Control signals to the fuel-regulating system must be appropriately sequenced.&nbsp;<\/p>\n\n\n\n<p>Device sequence should be checked as the startup begins. Successful startup hinges on turbine equipment working properly.&nbsp; Yet so many of the control logic circuits are connected to valid protection circuits and permissive conditions as well as operating control devices.&nbsp;&nbsp;<\/p>\n\n\n\n<p>The turbine control system changes the flow of fuel gas to the combustion chambers in response to the FSR, or fuel stroke reference signal. &nbsp; Operation begins with the servo-drive.&nbsp; Here, a comparison of the setpoint and feedback signal happens.&nbsp; This converts to a valve position.&nbsp;<\/p>\n\n\n\n<p>As this is happening, protective circuits and the master Speedtronic system are both working.&nbsp; Additionally, entirely mechanical systems are also in play. &nbsp; Because of this, there are two ways to stop fuel flow: the inlet of the liquid fuel valve, or the FSV, and the fuel control valve (RST).&nbsp; These independently controlled systems each offer control against damage by over-speed.&nbsp; Rotor speed is typically controlled by speed control.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Real-life Fail-Safes<\/h2>\n\n\n\n<p>In real-life applications, the Mark VI system includes an over-temperature system to protect the gas turbine from a spark.&nbsp; It operates if the temperature regulating system fails.&nbsp;&nbsp;<\/p>\n\n\n\n<p>Likewise, the exhaust temperature control system will control fuel flow when ignition temp limits are reached. This occurs under normal operating conditions.&nbsp; But if the turbine is in failure mode, the fuel flow rate can exceed control limits.&nbsp; If this happens, the area of the turbine flow rate will rise to maximum.&nbsp;<\/p>\n\n\n\n<p>The Mark VI system includes twelve thermocouples installed within the turbine exhaust chamber.&nbsp; Averaged data from these thermocouples determine latching and alarming.&nbsp;<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>Looking for a <a href=\"https:\/\/www.axcontrol.com\/automation\/ge-boards\/mark-vi-is200\">Mark VI parts supplier<\/a>?  Then we can help!  Talk to our team today. <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Gas turbine protection systems are complex animals.&nbsp; They have many subsystems that must run at each stop and startup.&nbsp; Emergency systems back these up, kicking in when necessary. The most difficult thing about setting up control systems for gas turbine systems is their variability.&nbsp; Successful protection systems have to adjust from project to project, but &hellip; <a href=\"https:\/\/www.axcontrol.com\/blog\/2021\/speedtronic-mark-vi-how-it-monitors-gas-turbines\/23\/12\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Speedtronic Mark VI: How It Monitors Gas Turbines&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false},"categories":[9],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Speedtronic Mark VI: How It Monitors Gas Turbines - AX Control, Inc.<\/title>\n<meta name=\"description\" content=\"A short description of how the Speedtronic Mark VI turbine system works with gas turbines.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.axcontrol.com\/blog\/2021\/speedtronic-mark-vi-how-it-monitors-gas-turbines\/23\/12\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Speedtronic Mark VI: How It Monitors Gas Turbines - 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AX Control sells many legacy systems, including several of the Speedtronic series like the Mark I-II, Mark IV, the Mark V, as\u2026","rel":"","context":"In &quot;Circuit Boards&quot;","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1466,"url":"https:\/\/www.axcontrol.com\/blog\/2021\/gas-turbine-controls-a-list-of-faqs\/29\/06\/","url_meta":{"origin":2435,"position":2},"title":"Gas Turbine Controls: A List of FAQs","date":"June 29, 2021","format":false,"excerpt":"Gas turbines (and gas turbine controls) are used for everything from power stations to locomotives. What do you know about gas turbine controls? Here at AX Control, we focus a lot on gas turbine control systems. GE Speedtronic components make up a good bit of our inventory. 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