{"id":31725,"date":"2025-11-18T08:48:08","date_gmt":"2025-11-18T00:48:08","guid":{"rendered":"http:\/\/60.205.138.141\/?post_type=portfolio&p=31725"},"modified":"2026-01-04T14:30:29","modified_gmt":"2026-01-04T06:30:29","slug":"sensor-is-working-normally-but-opening-closing-speed-is-measured-incorrectly-shows-zero","status":"publish","type":"portfolio","link":"https:\/\/www.handy-tech.com\/en\/\u6280\u672f\u652f\u6301\/sensor-is-working-normally-but-opening-closing-speed-is-measured-incorrectly-shows-zero","title":{"rendered":"Sensor is working normally, but opening\/closing speed is measured incorrectly \/ shows zero."},"content":{"rendered":"\n

Self-check: Is the instrument power supply abnormal?<\/h1>\n\n\n\n

First, always compare speed test results with the factory report.<\/strong>
Therefore, the motion sensor must be the same type<\/strong> and mounted in the same position<\/strong> as the one used by the circuit-breaker manufacturer. Sensors designed for different kinds of motion must never<\/strong> be swapped at will.<\/p>\n\n\n\n

\u2714 Linear-motion sensors<\/strong> (linear potentiometers, accelerometers, digital linear, laser, etc.) measure the straight-line travel of the pull-rod or similar parts.
\u2714 Rotary-motion sensors<\/strong> (rotary potentiometers, digital encoders, gyroscopes, etc.) measure the angular rotation of the crank-shaft or similar parts.<\/p>\n\n\n\n

Speed = 0?<\/strong>
On the test screen there is a \u201cSpeed Trigger\u201d item (default A1).
Whenever you change the phase under test, change the Speed Trigger to the same contact<\/strong> (e.g., if the contact leads are on B1, set Speed Trigger to B1).
Leaving it on A1 while reading B1 will give a B1 time and a stroke curve, but the calculated speed will be zero.<\/p>\n\n\n\n

Settings:<\/strong> stroke length and speed definition must exactly match<\/strong> the manufacturer\u2019s values.<\/p>\n\n\n\n

Sensor type must be selected as specified.<\/strong>
Example: if an XC355 analogue rotary sensor is used, choose \u201cAnalogue Linear\u201d in the menu; selecting \u201cGyroscope\u201d will produce an incorrect curve.<\/p>\n\n\n\n

Speed definition must follow the manufacturer\u2019s rule.<\/strong>
Most definitions are tied to the instant of contact-make or -break, so the breaker-contact test leads must be connected and the recording time must be long enough to capture the full open\/close travel curve.<\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

Self-check: Is the instrument power supply abnormal? First, always compare speed test results with the factory report.Therefore, the motion sensor<\/p>\n","protected":false},"featured_media":0,"menu_order":0,"comment_status":"open","ping_status":"closed","template":"","project-cat":[24],"class_list":["post-31725","portfolio","type-portfolio","status-publish","hentry","project-cat-hvswitchtestseries"],"cp_meta_data":{"_elementor_template_type":["wp-post"],"_elementor_version":["3.16.6"],"_wp_page_template":["default"],"_elementor_data":["[{\"id\":\"4a22bc1\",\"elType\":\"container\",\"settings\":{\"equal_height\":\"yes\",\"content_position\":\"top\",\"structure\":\"20\",\"flex_gap\":{\"size\":30,\"column\":\"30\",\"row\":\"30\",\"unit\":\"px\",\"isLinked\":true},\"margin\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"50\",\"left\":\"0\",\"isLinked\":\"\"},\"flex_direction\":\"row\",\"flex_direction_tablet\":\"column\",\"scroll_y\":-80,\"container_sticky_offset\":50},\"elements\":[{\"id\":\"a9f8c80\",\"elType\":\"container\",\"settings\":{\"_column_size\":\"66\",\"flex_gap\":{\"size\":\"30\",\"column\":\"30\",\"row\":\"30\",\"unit\":\"px\"},\"column_sticky_offset\":\"50\",\"scroll_y\":\"-80\",\"width_tablet\":{\"size\":\"100\",\"unit\":\"%\"},\"content_width\":\"full\",\"width\":{\"unit\":\"%\",\"size\":66.7,\"sizes\":[]},\"container_sticky_offset\":50},\"elements\":[{\"id\":\"d9563c7\",\"elType\":\"widget\",\"settings\":{\"ids\":[{\"id\":480,\"url\":\"http:\\\/\\\/60.205.138.141\\\/wp-content\\\/uploads\\\/2021\\\/08\\\/portfolio-9.jpg\"},{\"id\":476,\"url\":\"http:\\\/\\\/60.205.138.141\\\/wp-content\\\/uploads\\\/2021\\\/08\\\/portfolio-5.jpg\"},{\"id\":477,\"url\":\"http:\\\/\\\/60.205.138.141\\\/wp-content\\\/uploads\\\/2021\\\/08\\\/portfolio-6.jpg\"},{\"id\":478,\"url\":\"http:\\\/\\\/60.205.138.141\\\/wp-content\\\/uploads\\\/2021\\\/08\\\/portfolio-7.jpg\"}],\"ids_size\":\"full\",\"spacing\":\"30\",\"columns\":{\"unit\":\"px\",\"size\":1,\"sizes\":[]},\"scroll_y\":-80,\"sync_parent_id\":\"wd_6571bf6dcb637\"},\"elements\":[],\"widgetType\":\"wd_images_gallery\"}],\"isInner\":true},{\"id\":\"3343de8\",\"elType\":\"container\",\"settings\":{\"_column_size\":\"33\",\"column_sticky\":\"sticky-column\",\"column_sticky_offset\":\"150\",\"scroll_y\":\"-80\",\"width_tablet\":{\"size\":\"100\",\"unit\":\"%\"},\"content_width\":\"full\",\"width\":{\"unit\":\"%\",\"size\":33.7,\"sizes\":[]},\"flex_gap\":{\"column\":\"0\",\"row\":\"0\",\"isLinked\":true,\"unit\":\"px\",\"size\":0},\"container_sticky\":\"yes\",\"container_sticky_offset\":\"150\"},\"elements\":[{\"id\":\"ffa0fa2\",\"elType\":\"widget\",\"settings\":{\"subtitle\":\"\",\"after_title\":\"\",\"image_size\":\"custom\",\"title\":\"Sticky Sidebar\",\"font_container\":\"tag:h4|font_size:46|text_align:left\",\"use_theme_fonts\":\"yes\",\"align\":\"left\",\"size\":\"extra-large\",\"scroll_y\":\"-80\",\"text_typography_typography\":\"custom\",\"text_typography_font_family\":\"Poppins\",\"text_typography_font_size\":{\"unit\":\"px\",\"size\":16,\"sizes\":[]},\"text_typography_font_weight\":\"600\"},\"elements\":[],\"widgetType\":\"wd_title\"},{\"id\":\"e65b1a5\",\"elType\":\"widget\",\"settings\":{\"text\":\"

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