Lynne | 12/03/2014 23:56:37 |
117 forum posts 32 photos | Are there digital inv. mfg. that do not have speed control etc ? I have a Raglan which has speed control built in, but I wish to fit a 3 phase motor. Regards Lynne
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Thor 🇳🇴 | 13/03/2014 05:25:52 |
![]() 1766 forum posts 46 photos | Ehm.. Lynne, why not just use the inverter fixed at 50Hz? You don't have to use the "speed control" of the inverter. Thor |
john kennedy 1 | 13/03/2014 06:20:31 |
![]() 214 forum posts 24 photos | How is the 'speed control built in'. If its mechanical then Thor has the answer. If its electrical then I doubt it. You can of course use a Variable Frequency Drive (inverter?) and wire the electrical speed control, For/Off/Rev and E stop as if it were the pendant control. Loads on the net about it.Do a search for 'wiring a VFD.
Edited By john kennedy 1 on 13/03/2014 06:21:48 |
David Jupp | 13/03/2014 08:21:11 |
978 forum posts 26 photos | They do exist without speed control, but may be difficult to find. As previously mentioned, you are not forced to use the speed control - I run my drill via an inverter, frequency is set at 50Hz and the options for frequency control are not connected or configured. Speed ramps are set for start up, to limit start up current. |
Neil Wyatt | 13/03/2014 13:13:32 |
![]() 19226 forum posts 749 photos 86 articles | Try Transwave at right - they sell static converters that will do the job you want without the cost or complexity of an inverter. Neil |
Lynne | 13/03/2014 22:15:47 |
117 forum posts 32 photos | Thanks to everyone who has responded to my enquiry. The Raglan has a mechanical variable speed control. I did appreciate that I could simply leave the inverter on a 50Hz setting, but why pay for a facilities that one is never going to use. My understanding is that the digital inverter produces 3phase which is very close to the real thing, as opposed to the static(capacitor reliant) inverter, and I want the digital version. Regards Lynne |
Michael Gilligan | 13/03/2014 23:01:34 |
![]() 23121 forum posts 1360 photos | Posted by Lynne on 13/03/2014 22:15:47:
Thanks to everyone who has responded to my enquiry. The Raglan has a mechanical variable speed control. I did appreciate that I could simply leave the inverter on a 50Hz setting, but why pay for a facilities that one is never going to use. My understanding is that the digital inverter produces 3phase which is very close to the real thing, as opposed to the static(capacitor reliant) inverter, and I want the digital version. Regards Lynne . Lynne, I stand to be corrected, but; I suspect that, due to the strange economics of mass-production, you may find it cheaper to buy the variable speed inverter ... MichaelG. |
Russell Eberhardt | 14/03/2014 10:13:41 |
![]() 2785 forum posts 87 photos | Posted by Neil Wyatt on 13/03/2014 13:13:32:
Try Transwave at right - they sell static converters that will do the job you want without the cost or complexity of an inverter. Neil Their cheapest static converter seems to be £290 depending on the motor size you can buy several digital inverters for that price! One advantage of keeping the mechanical speed control is that the motor cooling will work better. Running a 3 phase motor at low speed can result in overheating if you're not careful with your choices. Russell. |
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