{"id":215,"date":"2015-05-28T18:19:25","date_gmt":"2015-05-28T18:19:25","guid":{"rendered":"http:\/\/www.mroelectric.com\/blog\/?p=215"},"modified":"2024-03-26T11:47:16","modified_gmt":"2024-03-26T15:47:16","slug":"commander-sk-trip-codes","status":"publish","type":"post","link":"https:\/\/www.mroelectric.com\/blog\/commander-sk-trip-codes\/","title":{"rendered":"Emerson Commander SK Advanced User Guide &#038; Manual"},"content":{"rendered":"<p>Struggling with <a href=\"https:\/\/www.mroelectric.com\/blog\/category\/troubleshooting-and-repair\/\">troubleshooting and repair<\/a>? Keep your equipment running smoothly by using the following guide to diagnose any trip codes. The following are some of the common errors you might encounter:<\/p>\n<h2>Emerson Commander SK Fault &amp; Trip Codes by <a href=\"https:\/\/www.mroelectric.com\/control-techniques\/1\">Control Techniques<\/a><\/h2>\n<table  class=\" table table-hover\" >\n<tbody>\n<tr>\n<td><b>Trip Code<\/b><\/td>\n<td><b>Condition<\/b><\/td>\n<td><b>Possible Cause<\/b><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">UU<\/span><\/td>\n<td><span style=\"font-weight: 400;\">DC Bus under voltage<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Low AC Supply Voltage<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Low DC Bus voltage when supplied by an external DC power supply<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">OU<\/span><\/td>\n<td><span style=\"font-weight: 400;\">DC Bus over voltage<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Deceleration rate set too fast for the inertia of the machine<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Mechanical load driving the motor<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">OI.AC**<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Drive output instantaneous over current<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Insufficient ramp times<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Phase to phase or phase to ground short circuit on the drives output<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Drive requires autotuning to the motor<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Motor or motor connections changed, re-autotune drive to motor<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">OI.br**<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Braking Resistor instantaneous over current<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Excessive current in braking resistor<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Braking resistor value to small<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">O.SPd<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Over Speed<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Excessive motor speed (typically caused by a mechanical load driving the motor<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">tunE<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Autotune stopped before completion<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Run command removed before autotune compelte<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">It.br<\/span><\/td>\n<td><span style=\"font-weight: 400;\">I2t on Braking Resistor<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Excessive braking resistor energy<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">lt.AC<\/span><\/td>\n<td><span style=\"font-weight: 400;\">l2t on drive output current<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Excessive Mechanical load<\/span><\/p>\n<p><span style=\"font-weight: 400;\">High impedance phase to phase or phase to ground short circuit at drive output<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Drive requires re-autotuning to motor<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">O.ht1<\/span><\/td>\n<td><span style=\"font-weight: 400;\">IGBT over heat based on dries thermal model<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Over heat software thermal module<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">O.ht2<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Over heat based on drives heatsink<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Heatsink temperature exceeds maximum allowable<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">th<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Motor thermistor trip<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Excessive motor temperature<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">O.Ld1*<\/span><\/td>\n<td><span style=\"font-weight: 400;\">User +24v or digital output overload<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Excessive load or short circuit on +24v output<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">cL1<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Analogue input 1 current mode, current loss<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Input current less than 3mA when 4-20 or 20-4mA modes selected<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">SCL<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Serial communication loss time-out<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Loss of communication when drive is under remote control<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EEF<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Internal Drive EEPROM trip<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Possible loss of parameter values<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">PH<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Input phase imbalance or input phase loss<\/span><\/td>\n<td><span style=\"font-weight: 400;\">One of the input phases has become disconnected from the drive (applies to 200\/400v three phase drives only, not dual rated drives.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">rS<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Failure to measure motors stator resistance<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Motor too small for drive<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Motor cable disconnected during measurement<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">C.Err<\/span><\/td>\n<td><span style=\"font-weight: 400;\">SmartStick data error<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Bad connection or memory corrupt within SmartStick<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">C.dAt<\/span><\/td>\n<td><span style=\"font-weight: 400;\">SmartStick data does not exist<\/span><\/td>\n<td><span style=\"font-weight: 400;\">New\/empty SmartStick being read<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">C.Acc<\/span><\/td>\n<td><span style=\"font-weight: 400;\">SmartStick read\/write error fail<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Bad connection or faulty SmartStick<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">C.rtg<\/span><\/td>\n<td><span style=\"font-weight: 400;\">SmartStick\/drive rating change<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Already programmed SmartStick read by a drive of a different rating<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">O.cL<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Overload on current loop input<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Input current exceeds 25mA<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">HFxx trip<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Hardware faults<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Internal drive hardware fault<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>HF01 to HF03<br \/>\nNot used<br \/>\nHF04<br \/>\nLow DC bus at power up- may indicate an AC Input or pre-charge problem<br \/>\nHF05<br \/>\nNo internal handshake signal from second processor (DSP) at start up<br \/>\nHF06<br \/>\nUnexpected interrupt<br \/>\nHF07<br \/>\nWatchdog failure<br \/>\nHF08<br \/>\nInterrupt crash (code overrun)<br \/>\nHF09 to HF10<br \/>\nNot used<br \/>\nHF11<br \/>\nAccess to the EEPROM failed- tried to read stored parameter data but failed<br \/>\nHF12 to HF19<br \/>\nNot used<br \/>\nHF20<br \/>\nPower stage &#8211; code error Tried to read power board and read back erroneous<br \/>\nHF21<br \/>\nPower stage &#8211; unrecognized frame size<br \/>\nHF22<br \/>\nOvercurrent detection at power up- possible output short or bridge failure<br \/>\nHF23<br \/>\nDSP software overrun<br \/>\nHF24<br \/>\nNot Used<br \/>\nHF25<br \/>\nDSP Communications failure- communication from main to 2nd processor<br \/>\nHF26<br \/>\nSoft start relay failed to close; or soft start monitor failed; or braking<br \/>\nIGBT short circuit at power up<br \/>\nHF27<br \/>\nPower stage thermistor fault<br \/>\nHF28<br \/>\nPower circuit thermistor 2 or 3 fault Internal fan fault on size 3 only<br \/>\nHF29<br \/>\nFan failure (current too high &#8211; only on drives with a fan) see note below<br \/>\nHF30<br \/>\nNot used<br \/>\nHF31<br \/>\nInternal Cap Bank Fan failure- check for fan rotation\/blockage Size 4 and up<br \/>\nHF32<br \/>\nPower circuit temperature feedback multiplexer failure<\/p>\n<p><span style=\"font-weight: 400;\">Looking for more <\/span><a href=\"https:\/\/www.mroelectric.com\/blog\/category\/manufacturers\/control-techniques\/\"><span style=\"font-weight: 400;\">information about Control Techniques equipment<\/span><\/a><span style=\"font-weight: 400;\">? Read on here.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Shopping for new or refurbished <\/span><a href=\"https:\/\/www.mroelectric.com\/control-techniques\/1\"><span style=\"font-weight: 400;\">Control Techniques parts<\/span><\/a><span style=\"font-weight: 400;\">? Shop for the parts you\u2019re looking for here, or find out more about how MRO Electric can <\/span><a href=\"https:\/\/www.mroelectric.com\/repair\"><span style=\"font-weight: 400;\">help you repair your equipment<\/span><\/a><span style=\"font-weight: 400;\">.\u00a0<\/span><\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"h-experiencing-trip-codes-on-your-commander-sk\">Experiencing Trip Codes on Your Commander SK?<\/h2>\n\n\n\n<p>Trip codes can be puzzling, but MRO Electric has the solution. Whether you need in-depth guides to understand your Commander SK drive&#8217;s codes or require immediate repair service, we&#8217;re here to support you in restoring your system&#8217;s efficiency swiftly.<\/p>\n\n\n\n<div class=\"btn-wrapper center\"><a href=\"https:\/\/www.mroelectric.com\/repair\/control-techniques\" class=\"btn-custom md blue\">Explore Our Control Techniques Repair Services<\/a><\/div>\n\n\n\n<div class=\"btn-wrapper center mb-2\"><a href=\"https:\/\/www.mroelectric.com\/control-techniques\/1\" class=\"btn-custom sm blue\">Shop New or Refurbished Control Techniques Parts<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Struggling with troubleshooting and repair? Keep your equipment running smoothly by using the following guide to diagnose any trip codes. The following are some of the common errors you might encounter: Emerson Commander SK Fault &amp; Trip Codes by Control Techniques Trip Code Condition Possible Cause UU DC Bus under voltage Low AC Supply Voltage [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":5626,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"ngg_post_thumbnail":0,"footnotes":""},"categories":[97,12],"tags":[145,11],"class_list":["post-215","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-control-techniques","category-troubleshooting-and-repair","tag-commander-drives","tag-trip-codes"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.3.1 (Yoast SEO v25.3.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Emerson Commander SK Fault &amp; Trip Codes - Advanced User Guide<\/title>\n<meta name=\"description\" content=\"Use this comprehensive Emerson Commander SK Fault Codes guide to help troubleshoot common issues. 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