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| Need Wiring Help For 12 Volt Motor |
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| philf:
Snub, I suspect that the connection diagram you posted for your relay is wrong! From the Picker website (and in common with most other similar relays): So, in the diagram you posted the Armature and Normally Open Contact connections are swapped over. You need to connect the relay as follows: I hope this helps. Cheers. Phil. |
| 75Plus:
I have been watching this thread and decided to throw in my 2 cents. Steve's' circuit is spot on and the explanation is easy to follow. There are just a few comments I would like to make. 1. Most relay contacts are labeled NC, NO and COM (common ). In this case the motor armature is connected to the common terminals but the relay coil is also called an armature in some designs. 2. In the first schematic the joy stick is shown in the on position while the relay is shown de-energized which can be a bit confusing. 3. A suggestion: Using a DPDT switch the speed controller can be switched in or out of the circuit which would eliminate the need for a second joy stick. 4. It may be wise to add limit switches on both ends of the travel to protect the drive. |
| DMIOM:
--- Quote from: 75Plus on December 15, 2014, 10:46:05 AM ---.....3. A suggestion: Using a DPDT switch the speed controller can be switched in or out of the circuit which would eliminate the need for a second joy stick...... --- End quote --- except that then raises the issue of which joystick to use - latching or non-latching? - unless Sub is going to make his own gates. and .... The circuits above have the motor power routed through the joystick contacts. I can't recall the specs for the switches being posted but I suspect they're more likely to to be signal-rated than significant-current-carrying? - in which case you may need an extra relay (and maybe a couple of steering diodes). And .... re my earlier suggestion (#28) of a user interface, if you have the option of making your own gates, then there's a simple way I've just thought of to use just the one joystick - if your gate is "+" then mount it 45 degrees round so you get an "x" gate :doh: so you could still have up/right (unlatched) = high speed right, down/right (unlatched) = low speed right, etc. Dave |
| bertie_bassett:
ahh yes id put the N/O and N/c round the wrong way.. :palm: looks like you've got it pretty much sorted now though :) one thing im not sure will work with the above diagrams though, is the use of the pwm to power the relay coil. im not sure the relay will like that? |
| snub:
--- Quote from: philf on December 15, 2014, 05:23:23 AM ---Snub, I suspect that the connection diagram you posted for your relay is wrong! From the Picker website (and in common with most other similar relays): So, in the diagram you posted the Armature and Normally Open Contact connections are swapped over. You need to connect the relay as follows: Phil. --- End quote --- You are absolutely correct. I screwed up. Again. I think I must have used up all my brain cells. My lack of proper knowledge of the nomenclature caused me to think that terminals 3 and 4 were the armature. Terminals 1 and 5 and terminals 2 and 6 have continuity with no power to the coil. Terminals 3 and 5 and terminals 4 and 6 have continuity when power is applied to the coil. |
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