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06-09-2017, 05:46 AM | #11 |
Gone Wild
Join Date: Sep 2015
Location: Cincinnati, Ohio
Posts: 1,354
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Re: Diode and Resistor Size
If I'm not mistaken Dave @ Revolution has also stated that the controller has a resistor internally.
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06-09-2017, 05:50 AM | #12 |
Gone Wild
Join Date: Aug 2015
Location: summer-north,winter-south
Posts: 588
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Re: Diode and Resistor Size
That was my gut feeling, but hey I've been wrong plenty of times.
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06-09-2017, 06:43 AM | #13 |
MOD of all BS!
Join Date: Sep 2011
Location: Florida
Posts: 17,477
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Re: Diode and Resistor Size
David would know....
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06-09-2017, 09:15 AM | #14 | |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,419
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Re: Diode and Resistor Size
Quote:
This excludes the SR controls for series carts which still does need the external resistor and diode installed. And Yes, Cruiser. You need both of these items in your system. The resistor to prevent excessive controller strain and wear and the diode to protect the whole cart from voltage spikes. These things are so important that the SR control will not start up if it detects no precharge resistor resulting in the LED flash code 1 green and 6 red |
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06-09-2017, 09:42 AM | #15 |
Gone Wild
Join Date: Sep 2012
Location: Charlotte, NC
Posts: 9,329
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Re: Diode and Resistor Size
There is definitely no generic answer to the question about resistor and diode being needed.
As Scottyb stated, unless the manufacturer explicitly states either one of those devices is not needed externally, they should be included. It is also important to understand that even if the controller has an internal diode on the Solenoid activation circuit, it is only effectively as long as the Controller is on the "cold" side of the activation. If someone does a custom wiring instead of using the wiring diagram provided, it is possible to render the Controller diode ineffective at protecting the switching circuit. |
06-09-2017, 09:45 AM | #16 |
Gone Wild
Join Date: Aug 2015
Location: summer-north,winter-south
Posts: 588
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Re: Diode and Resistor Size
Thanks to you both for taking the time and effort to explain it.
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06-09-2017, 09:56 AM | #17 | |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,419
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Re: Diode and Resistor Size
Quote:
True true. There as so many ways to skin this cat ~ The (-) side of the activation circuit can be connected to B- (a constant source)or control J1 blk. If connected to J1 blk the program option for relay off at zero throttle exists. This is the recommended solenoid control. In all SR diagrams the (+) side of the solenoid activation comes from the key switch (battery source) through a foot pedal switch to the solenoid Sepex is a little more complicated Notice the title of the now aged Alltrax document I posted is "lessons learned" about solenoid size, pre charge resistors, and voltage spike suppression |
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06-10-2017, 10:32 AM | #18 | |
Not Yet Wild
Join Date: Apr 2017
Location: Western KY
Posts: 23
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Re: Diode and Resistor Size
That's some good information. Makes me feel even better about installing your 400A solenoid and reversing contactor.
Quote:
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06-10-2017, 11:31 AM | #19 |
Crazy Wild
Join Date: Jun 2015
Location: Carolina Lowcountry
Posts: 796
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Re: Diode and Resistor Size
Guys this is all great info I'm sure, but I really don't see how it has anything to do with my post.
I was simply asking if the resistor and diode I cited can be used on HD solenoids. If somebody could tell me yes or no, that they will or will not work ,I would appreciate it. Thanks,Muddog |
06-10-2017, 11:46 AM | #20 | |
MOD of all BS!
Join Date: Sep 2011
Location: Florida
Posts: 17,477
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Re: Diode and Resistor Size
Quote:
Pre-Charge resistor needs to be 470 ohnm 10W Diode needs to be 3 amps (Usually they are 1 amp on 200's and 3 amp on 400's) |
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