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Post by andyhigham on Feb 18, 2022 6:39:36 GMT
Should go nicely with the names I currently have on locos
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lesstoneuk
Part of the e-furniture
Retired Omnibus navigation & velocity adjustment technician
Posts: 373
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Post by lesstoneuk on May 20, 2022 13:12:54 GMT
Hi everyone OK, I need some input on a subject. Having bought and paid for two 80amp (60amp continuous) speed controllers from China, I'm wondering if... To keep the continuous amp consumption lower, if I could run the two speed controllers off one potentiometer.
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Post by steamer5 on May 20, 2022 21:17:59 GMT
Hi Les, Probably not that helpful, but the 4QD ones do that. Maybe check out there website to see if you can find anything helpful for the controllers you have.
Cheers Kerrin
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JonL
Elder Statesman
WWSME (Wiltshire)
Posts: 2,909
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Post by JonL on May 21, 2022 7:23:25 GMT
You can get two potentiometers ganged together which would isolate them from each other.
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lesstoneuk
Part of the e-furniture
Retired Omnibus navigation & velocity adjustment technician
Posts: 373
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Post by lesstoneuk on May 22, 2022 7:28:33 GMT
You can get two potentiometers ganged together which would isolate them from each other. Found the double pots online but while doing the searching I realised that there will be 10 wires for the fly lead plus another 4 for the 12 tag dpdt, plus 2 for the horn. That's a 16 core cable. The connection to the dash is no problem, aviation plugs n sockets cover that. This is getting over complicated me thinks. So much for simplifying the set-up.
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jackrae
Elder Statesman
Posts: 1,333
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Post by jackrae on May 22, 2022 9:24:34 GMT
You could use D25 computer cables. If you can drop the lead count to 15, as some of your circuits may use a common line, you could use a 15-way VGA cable (the one that fits into the blue socket on a computer)
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jackrae
Elder Statesman
Posts: 1,333
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Post by jackrae on May 22, 2022 12:03:42 GMT
Hi everyone OK, I need some input on a subject. Having bought and paid for two 80amp (60amp continuous) speed controllers from China, I'm wondering if... To keep the continuous amp consumption lower, if I could run the two speed controllers off one potentiometer. Are you trying to parallel the two controller outputs so that you effectively have 1 controller rated at 120amps. If so I doubt you'll find they're happy to be connected like that. Or do you mean you want to drive two motors on the same loco using two independent controllers and hope they output identical voltages so that the motors run at the same speed ? Unless you're running a large train system 60 amps at 24 volts from 1 controller should be ample
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lesstoneuk
Part of the e-furniture
Retired Omnibus navigation & velocity adjustment technician
Posts: 373
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Post by lesstoneuk on May 22, 2022 15:54:20 GMT
Hi everyone OK, I need some input on a subject. Having bought and paid for two 80amp (60amp continuous) speed controllers from China, I'm wondering if... To keep the continuous amp consumption lower, if I could run the two speed controllers off one potentiometer. Are you trying to parallel the two controller outputs so that you effectively have 1 controller rated at 120amps. If so I doubt you'll find they're happy to be connected like that. Or do you mean you want to drive two motors on the same loco using two independent controllers and hope they output identical voltages so that the motors run at the same speed ? Unless you're running a large train system 60 amps at 24 volts from 1 controller should be ample No, to lessen the ampage drawn for running, I want to run each bogie from its own dedicated controller. So instead of one controller running 4 x 150w motors, I want one controller running 2 x 150w motors... Twice. Each bogie would be separate from the other.
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JonL
Elder Statesman
WWSME (Wiltshire)
Posts: 2,909
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Post by JonL on May 23, 2022 14:22:22 GMT
The DPDT switch could be onboard much closer as a DPDT relay, this would mean less voltage drop too.That takes the wires for that down to two (gnd and live)
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