Chrissaf Posted July 11, 2020 Share Posted July 11, 2020 does anyone no if the hornby hm 2000 control should make my dmus motor hum loudly thanks geoff Link to comment Share on other sites More sharing options...
Chrissaf Posted July 11, 2020 Share Posted July 11, 2020 TIP: As a newbie poster on the forum, just be aware that the 'Blue Button with the White Arrow' is not a 'Reply to this post' button. If you want to reply to any of the posts, scroll down and write your reply in the reply text box at the bottom of the page and click the Green 'Reply' button..See also – further TIPs on how to get the best user experience from this forum.https://www.hornby.com/uk-en/forum/tips-on-using-the-forum/. Link to comment Share on other sites More sharing options...
96RAF Posted July 11, 2020 Share Posted July 11, 2020 Are they coreless motors? Link to comment Share on other sites More sharing options...
JJ73 Posted July 12, 2020 Share Posted July 12, 2020 I've got the H & M 2000 - It shouldn't make it Hum on it but Hornby's new Basic Controller (R7229) will!!! Link to comment Share on other sites More sharing options...
96RAF Posted July 12, 2020 Share Posted July 12, 2020 There are various models of HM2000 with different internals, the newer design being more integrated circuit based than the original, which is essentially old tech based.Early model has a large ‘kettle’ lead supllying the power and no mains switch.An interim model has the same lead with a mains switch above it.The newer model has a smaller figure 8 mains cable and a mains switch. The HM2000 type may affect how it handles the various motor types such as coreless. More expert folk will be able to explain why. Link to comment Share on other sites More sharing options...
ColinB Posted July 12, 2020 Share Posted July 12, 2020 Could it be that the latest version of HM2000 has gone to pulse width (PWM) modulation output. It is much cheaper to make a PWM controller with modern components and I think that they consume less power, so perhaps they changed the design. Link to comment Share on other sites More sharing options...
Rog RJ Posted July 12, 2020 Share Posted July 12, 2020 The OP isn't connecting to the AC terminals, is he? His previous post was about burning motor smell? Link to comment Share on other sites More sharing options...
Chrissaf Posted July 12, 2020 Share Posted July 12, 2020 Just to follow up on Rog's post. The highlighted terminals should be the only terminals that are connected to track./media/tinymce_upload/6b0c09aee93c574f9fa2e96cdbeeb46d.JPG Link to comment Share on other sites More sharing options...
GWR 14xx Tank Posted July 12, 2020 Share Posted July 12, 2020 If the model of the H&M 2000 you are talking about has PWM (Pulse Width Modulation) I suggest you read this thread, which is to do with what PWM is, and what effects it can have on locomotives. Near the bottom of page 16, to page 17. https://www.hornby.com/uk-en/forum/post/view/topic_id/10670/?p=16 Thanks to Chris who has made the link clickable below. I imagine the sounds from locomotives on a PWM controller would be pretty similar, be it a DMU like you mentioned, or a Steam loco - they all have pretty similar motors anyway - there shouldn't be that much difference in noise. 14xx Tank Link to comment Share on other sites More sharing options...
Chrissaf Posted July 12, 2020 Share Posted July 12, 2020 GWRs link clickable:https://www.hornby.com/uk-en/forum/post/view/topic_id/10670/?p=17 Link to comment Share on other sites More sharing options...
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