Forum sponsored by:

Wiring diagram

New switch

Search for: in Thread Title in

John Anderson 3	14/09/2016 16:55:12
6 forum posts 6 photos	Hi I previously posted a switch which I thought to be a santon I was wrong it is a Diamond H switch so I am hoping someone out there can help me with a wiring diagram to connect it with a Crompton Parkinson motor with terminals A, Z, AZ & T, Edited By John Anderson 3 on 14/09/2016 16:59:42 Edited By John Anderson 3 on 14/09/2016 17:01:07
john fletcher 1	14/09/2016 17:53:31
893 forum posts	I am not familiar with your make of switch, but if you form a truth table of open and closed pairs of terminal then you are part the way there. zero and one, open/closed . Mark each terminal some way or other dobs of paint or coloured nail varnish. With an ohmmeter or a buzzer continuity tester you can sort it out. The switch is 4 positons type so you are looking for vertical OFF, left forward and to the right reverse, I know its easier with a bit of experience. There looks to be sufficient number of terminals and once you have it sorted then follow the Dewhirst/Myford wiring arrangement. One thing I would like to point out ,that the switch on its own doesn't give any No-Volt release which is a good safety feature, a proper motor starter fitted with RED and GREEN pushes do.John
frank brown	15/09/2016 08:43:17
436 forum posts 5 photos	Further to John's reply, those black links look like a give a way, could be L & N inputs. If they are, then they feed the motor via a reversing action to one winding. Frank

All Topics | Latest Posts

Please login to post a reply.

Magazine Locator

Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!

Find Model Engineer & Model Engineers' Workshop

You can unsubscribe at anytime. View our privacy policy at www.mortons.co.uk/privacy

Latest Forum Posts

hemingway ball turner
04/07/2025 14:40:26
*Oct 2023: FORUM MIGRATION TIMELINE*
05/10/2023 07:57:11
Making ER11 collet chuck
05/10/2023 07:56:24
What did you do today? 2023
05/10/2023 07:25:01
Orrery
05/10/2023 06:00:41
Wera hand-tools
05/10/2023 05:47:07
New member
05/10/2023 04:40:11
Problems with external pot on at1 vfd
05/10/2023 00:06:32
Drain plug
04/10/2023 23:36:17
digi phase converter for 10 machines.....
04/10/2023 23:13:48
More Latest Posts...
View All Topics

Support Our Partners

Shopping Partners

Subscription Offer

Latest "For Sale" Ads

Reeves** - Rebuilt Royal Scot by Martin Evans
by John Broughton
£300.00
BRITANNIA 5" GAUGE James Perrier
by Jon Seabright 1
£2,500.00
Drill Grinder - for restoration
by Nigel Graham 2
£0.00
WARCO WM18 MILLING MACHINE
by Alex Chudley
£1,200.00
MYFORD SUPER 7 LATHE
by Alex Chudley
£2,000.00
More "For Sale" Ads...

Latest "Wanted" Ads

D1-3 backplate
by Michael Horley
Price Not Specified
fixed steady for a Colchester bantam mark1 800
by George Jervis
Price Not Specified
lbsc pansy
by JACK SIDEBOTHAM
Price Not Specified
Pratt Burnerd multifit chuck key.
by Tim Riome
Price Not Specified
BANDSAW BLADE WELDER
by HUGH
Price Not Specified
More "Wanted" Ads...

Get In Touch!

Do you want to contact the Model Engineer and Model Engineers' Workshop team?

You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.

Click THIS LINK for full contact details.

For subscription issues please see THIS LINK.

Digital Back Issues