Reversing contractor question

YamahaCRN35

If any of the smart guys on here would like to take a swing at this I'd, appreciate it. I'm trying to get my head wrapped around the white rodgers twin 6post Solenoids. Any help diagrams or explanations would be great. Thanks

BGW

__________________
This advertising will not be shown in this way to registered members.
Register your free account today and become a member on Buggies Gone Wild Golf Cart Forum

DaveTM

This doesn't specifically address the White Rodgers brand, but I purchased a set of ScottyB's reversing contactors http://www.cartsunlimited.net/Reversing_Contactors.html for my EZ-GO TXT 48-V (Actually I bot the Super Duty) and tossed the old weak F\R switch in the dump pile about a year and a half ago. These new reversing contactors are so much nicer and so much more dependable than the old rotary style, if you don't replace yours soon...you be kicking yourself later as to why.

Click the link and I think all of the explanations are right there.

Andy4639

This is the one I use.
It's simple to use and you just add the F/R contactor.

YamahaCRN35

Yeah. That's the sw202 style. I use that one a lot and it is way better. Just trying to learn about the white Rodgers style ones

Andy4639

You talking this one? Looks the same on both ends.Look at last sentence under the picture it takes two of them.



586 Style SPDT
•24, 36 & 48 Volt Coils
•Water resistant
• Double-make or double-break contacts
Capable of handling high and low current
•Rated load—making & breaking 200 Amps
•Inrush Current 600 Amps
•Temperature Range -40˚F to 150˚F
• Terminations ◦Contacts: 5/16"-24 UNF-2A thread
◦Coil: #10-32 UNF-2A thread

• Recommended Mounting ◦Vertical plane with coil terminals up

• Hardware Torque Specification ◦Contact Terminal: 60 inch-lbs., max
◦Coil Terminal: 12-18 inch lbs.
◦Water Resistant

•It takes two of these contactors to reverse a Series or PM motor.

DaveTM

[quote=Andy4639;1168416]You talking this one? Looks the same on both ends.Look at last sentence under the picture it takes two of them.

[/COLOR]

Yeah....it takes two of 'em....but they have to be put together with heavy copper plates bent just right.

YamahaCRN35

Obviously my post has been severely misunderstood. I know what they are and what they look like, I've seen them and worked on them. Just wanting to fully understand how they work. I appreciate the input though.

Sergio

The little terminals are the coil connections, the BIG ones on the coil side are the Normally Open Contacts and the BIG ones on the other side are the Normally Closed Contacts.

You do need to make 4 "jumper" wires to connect the 2 solenoids in order to work as a reversing contactor.

The SW202 is easier to setup, but although they sometimes advertise them as 400amps, they are in fact only 250amps as configured from factory.

The best you can do with these WR586 is to wire them for 200amp in forward and 100amp in reverse contactor.

Sergio

I drew a quick diagram to show how I would use 2 of those contactors to make a FNR contactor, but a little information first.

Most contactors, including both the SW20x series and the WR586 series, have greater current carrying capacity on the Normally Open than they do on the Normally Closed contacts.

That is because the Normally Closed contacts are pressed together by a spring and the Normally Open Contacts (when closed) are pressed together by the powerful magnetic coil plunger.

Since most Golf Carts should have a main solenoid, the Reversing Contactor does not need to operate as a ON/OFF switch, it only needs to provide a means to change the motor direction.

The way it is drawn, both Solenoids must close for the motor to go in the Forward direction. It will have a rating of 200amps in Forward.

When in Reverse, both solenoids are OFF and the current rating is only 100 amps.

If you wire it like the SW202, only 1 solenoid at the time is ON, so the current always passes through a Normally Closed Contact and that limits the maximum current.

The DPDT switch has a Center OFF position so the main solenoid does not get power when the FNR switch is in the Neutral position.

Attached Images

WR586_reversing_contactor.jpg (116.7 KB, 0 views)

timmyjane

How does either version have a high enough amperage rating to work without failure with a controller upgrade?