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Finished Plugins for Download / Re: A new Huanyang VFD plugin
« on: February 03, 2013, 05:55:09 PM »
Thank you for your info. As you probably and tell I am a newbie to VFD world and also kind of a newbie to Mach 3. Recently I sent the sellers of the unit I bought ( 3KW motor and VFD) some questions regarding cooling and disconnecting from power when not in use. On cooling the questions were what the flow rate was needed for the motor and could ethylene glycol be used in the coolant. The answer i got for the flow rate was "enough to keep the motor from burning up" and on the ethylene glycol was on the first answer no it would melt the plastic in the motor then on the second answer yes you con use ethylene glycol. On the subject of disconnecting, in their manual the state and I quote "do not use the electromagnetic contactor as the on/off button of power supply for the inverter" and in another place "no fuse breaker" could be used. The question I ask them was why a contactor could not be used to remove power from the VFD system WHEN NOT IN USE. My scheme was to have a 10 amp 3 phase breaker in the panel and a 3 pole relay controlled by a toggle switch for disconnecting the power when not in use. Could someone enlighten me as to what their thinking is!!! By the way I am a retired electrician and have an assoc. EE and am lucky enough to have 3 phase power in my wood shop at home. Not trying to be smart, I just can not see there concern.