Motors & Motor Controls http://ecmweb.com/taxonomy/term/19881/more en Transporter Tool Safety http://ecmweb.com/forums/electrical-equipment-systems/motors-motor-controls/transporter-tool-safety <div class="node-body forum-body"><p>Hey guys,</p> <p>I need&nbsp;some advice&nbsp;for safety of my working tools stored in my transporter. Is there some kind of box system&nbsp;available to help me store things in my overfilled&nbsp;car? Does anyone have any recommendations?</p> <p>Thanks!<br /> Klaus</p> </div> http://ecmweb.com/forums/electrical-equipment-systems/motors-motor-controls/transporter-tool-safety#comments Motors & Motor Controls Wed, 12 Apr 2017 09:32:08 +0000 147101 at http://ecmweb.com Replace a Motor Control http://ecmweb.com/forums/electrical-equipment-systems/motors-motor-controls/replace-motor-control <div class="node-body forum-body"><p>I have acquired an old plate roll that has no motor controls. The primary motor is a 15 HP,&nbsp;460VAC,&nbsp;21.3A,&nbsp;1,150 RPM, Westinghouse &quot;Life Line&quot; (it is dual voltage, but my building is wired 460V). There is a reference to a Rotor Circuit @ 240V&nbsp;32.5A. I don&#39;t know what that is.</p> <p>I need to find a way to drive this. Can someone describe the control mechanisms required? My electrical experience is limited so if I could get a specific component list that would be very helpful.</p> <p>Thank you!</p> </div> http://ecmweb.com/forums/electrical-equipment-systems/motors-motor-controls/replace-motor-control#comments Motors & Motor Controls Mon, 27 Feb 2017 15:34:42 +0000 145751 at http://ecmweb.com AC vs DC Motors in Industrial Applications http://ecmweb.com/forums/electrical-equipment-systems/motors-motor-controls/ac-vs-dc-motors-industrial-applications <div class="node-body forum-body"><p><span>I do a lot of electrical MCC and PLC designs for wood mills and mines, and we almost&nbsp;always use 600V AC premium-efficiency motors. My boss came up to me today and he was apparently told that he should switch out his AC fan motor for his home furnace out to DC, because the current consumption would be 1/3 with the DC motor. So my boss then comes to ask me why won&#39;t we use DC motors in an industrial setting instead of all these AC motors?</span></p> </div><p><a href="http://ecmweb.com/forums/electrical-equipment-systems/motors-motor-controls/ac-vs-dc-motors-industrial-applications" target="_blank">read more</a></p> http://ecmweb.com/forums/electrical-equipment-systems/motors-motor-controls/ac-vs-dc-motors-industrial-applications#comments Motors & Motor Controls Sat, 04 Feb 2017 01:10:55 +0000 144991 at http://ecmweb.com Burning of Thermal Protection http://ecmweb.com/forums/electrical-equipment-systems/motors-motor-controls/burning-thermal-protection <div class="node-body forum-body"><p>I am currently doing investigations at a company where the thermal overload of the motor burns through on two of the three phases. The motor is not damaged and the overcurrent protection does not trip. Measurements show that all three phases are present so it is not that the motor runs on two phases. The unit&#39;s&nbsp;contacts melt completely. We do not have an idea what can cause this kind of damage.&nbsp;It is a high current, but very short and fast. When working on a generator&nbsp;we do not seem to have the problem. It is only when connected to the power grid.</p> </div><p><a href="http://ecmweb.com/forums/electrical-equipment-systems/motors-motor-controls/burning-thermal-protection" target="_blank">read more</a></p> http://ecmweb.com/forums/electrical-equipment-systems/motors-motor-controls/burning-thermal-protection#comments Motors & Motor Controls Sun, 22 Jan 2017 11:55:59 +0000 144671 at http://ecmweb.com Error Light on Industrial Press http://ecmweb.com/forums/electrical-equipment-systems/motors-motor-controls/error-light-industrial-press <div class="node-body forum-body"><p>Hello all,</p> </div><p><a href="http://ecmweb.com/forums/electrical-equipment-systems/motors-motor-controls/error-light-industrial-press" target="_blank">read more</a></p> http://ecmweb.com/forums/electrical-equipment-systems/motors-motor-controls/error-light-industrial-press#comments Motors & Motor Controls Thu, 13 Oct 2016 18:49:28 +0000 141281 at http://ecmweb.com VFD FAULTS http://ecmweb.com/forums/electrical-equipment-systems/motors-motor-controls/vfd-faults <div class="node-body forum-body"><p>I have a Powerflex 40 that is giving me a fault code 71, which is NET ADAPTOR LOSS, quite frequently. &nbsp;It does seem happen at relatively simular&nbsp;times of the day, although nothing else in the same MCC seems to be affected. &nbsp;Does anyone have any experience with this and what have you found to be the culprit? &nbsp;Also another thing that seemed odd was when the drive faults and I reset the drive on the HIM and start again, the HIM shows amps being drawn but no hertz. &nbsp;Power has to be cycled for the motor to start. &nbsp;</p> </div> http://ecmweb.com/forums/electrical-equipment-systems/motors-motor-controls/vfd-faults#comments Motors & Motor Controls Sun, 11 Sep 2016 05:51:50 +0000 139861 at http://ecmweb.com Motor Protection Fuse Size http://ecmweb.com/forums/electrical-equipment-systems/motors-motor-controls/motor-protection-fuse-size <div class="node-body forum-body"><p>Hi there! I&#39;m looking for some advice.</p> <p>I&nbsp;want to know if a fuse rating of 12R, 2.54kV&nbsp;can be used for a motor rated&nbsp;2.4kV,&nbsp;60 Hz, 3-phase,&nbsp;462kW,&nbsp;620 Hp,&nbsp;130A. Is the mentioned fuse size&nbsp;suitable for the motor? The existing fuse was 12R, 5.08kV&nbsp;max. How does my suggested fuse&nbsp;differ?</p> <p>Thank you.</p> </div> http://ecmweb.com/forums/electrical-equipment-systems/motors-motor-controls/motor-protection-fuse-size#comments Motors & Motor Controls Wed, 03 Aug 2016 08:36:34 +0000 138531 at http://ecmweb.com Motor Controller for Submersible Pump http://ecmweb.com/forums/electrical-equipment-systems/motors-motor-controls/motor-controller-submersible-pump <div class="node-body forum-body"><p>Which is a more suitable motor controller for a 30 HP&nbsp;submersible pump;&nbsp;wye-delta&nbsp;or autotransformer? Which is more advantageous? Can anyone let me see a sample schematic diagram for autotransformer controller, with auto/manual selector? I&#39;d&nbsp;like to integrate the deep&nbsp;well level and&nbsp;water tank level switch for the pump auto mode, and want to know where to connect the level switch terminals.</p> </div><p><a href="http://ecmweb.com/forums/electrical-equipment-systems/motors-motor-controls/motor-controller-submersible-pump" target="_blank">read more</a></p> http://ecmweb.com/forums/electrical-equipment-systems/motors-motor-controls/motor-controller-submersible-pump#comments Motors & Motor Controls Wed, 13 Jul 2016 06:34:42 +0000 137721 at http://ecmweb.com wye delta control computation http://ecmweb.com/forums/electrical-equipment-systems/motors-motor-controls/wye-delta-control-computation <div class="node-body forum-body"><p>I have two&nbsp;motors: one is rated 30 hp&nbsp;and the other&nbsp;25 hp. They are both submersible pumps. They have six leads, wye to delta or whatsoever. All I&nbsp;want to do is to make a wye-delta control. But my problem is I don&#39;t&nbsp;know how to make it. I mean the computation from main breaker to sub breaker, wire size to be used in breaker to contactor and from overload to motor. Can you please help me?</p> </div> http://ecmweb.com/forums/electrical-equipment-systems/motors-motor-controls/wye-delta-control-computation#comments Motors & Motor Controls Sat, 16 Apr 2016 15:06:00 +0000 134531 at http://ecmweb.com VFD Overcurrent at Acceleration Error http://ecmweb.com/forums/electrical-equipment-systems/motors-motor-controls/vfd-overcurrent-acceleration-error <div class="node-body forum-body"><p>Can someone&nbsp;help me?</p> <p>I have a problem in a VFD&nbsp;(delta2000). It always errors with OCA (OVER CURRENT AT ACCELERATION). We already adjusted the acceleration time and decceleration time but nothing happened.&nbsp;The motor has&nbsp;a rotary encoder. I&#39;m&nbsp;wondering if&nbsp;the rotary encoder is the causing this problem.</p> </div> http://ecmweb.com/forums/electrical-equipment-systems/motors-motor-controls/vfd-overcurrent-acceleration-error#comments Motors & Motor Controls Tue, 16 Feb 2016 07:37:55 +0000 132451 at http://ecmweb.com