Industrial Overhead Door Control wiring

[Minuteman]

A customer just installed two, used, Overhead Door openers on his shop building. The motor control is "old school" and I am drawing a blank. The up/down/stop control has a 5 conductor cable to it. I figured out 3 of them.

Up and Down have a N.O. contact, and the stop has a N.C.

I can make the up/down work, but not the stop. The customer thinks that UP should be pressed once and the contact on the opener should hold until the limit switch is made. But, right now, UP or DOWN have to be held the whole time. (Release and the motor stops). I believe it is because I don't have the STOP wired in properly.

On the Diagram:

UP = C31 - C4
Down = LS4 - C4

Any help?

 

[hockeyoligist2]

I'm having a hard time with the drawing. I can't find any way that the LS's would hold in the contacts. Maybe because I stayed too long at the VFW last night! Many of the industrial overhead doors are designed so that someone has to keep the buttons pushed in to avoid accidents. The limit switches are to keep someone from going up or down too far.

 

[zbang]

Same here. Most, if not all, of the roll-up doors I've seen will only move when the button is held. The stop button seems redundant.

 

[HighWirey]

Think I would go directly to the fountainhead . . .
www.overheaddoor.com

You may even find the guy who drew up that confusing 1991 drawing.

Best Wishes

 

[billsnuff]

it looks to me as if e1 thru e2 should control the coils for up and down and the c's should be the holding contacts, just a guess. LS's should open the holding contacts..............again, just a guess:-?

 

[bth0mas20]

overhead door

overhead door

all the overhead door we have on site require you to hold the up and down button to keep it moving. We have a couple that are older and will maintain contacts and go out on limits. They have problally been modified though with an extra relay.

 

[Minuteman]

I did not get a chance to go by there today.

http://overheaddoor.com was NO HELP at all!

The limit switches must be connected internally on the board though, as they are part of the circuit. Customer is adamant that the Up be momentary - held by contacts.

 

[Rampage_Rick]

It's difficult to figure out without seeing how the rest of the terminal block is wired.

This is my first time trying to draw ladder logic in ASCII...

Momentary to open and close:

<--- [/]STOP ---+---+--- []UP ---+--- [/]LS-UP --- (/)DN --- ()UP --->
                |   +--- ()UP ---+
                |
                +---+--- []DN ---+--- [/]LS-DN --- (/)UP --- ()DN --->
                    +--- ()DN ---+

From this I'd suggest wiring the terminal block as such:
Connect C2 and C4
Connect C31 and LS3
Connect LS2 and E2
Connect C32 and LS4
Connect LS1 and E1
Connect the Stop switch between C and C2/C4
Connect the Up switch between C2/C4 and C31
Connect the Down switch between C2/C4 and C32

I'm working on the assumption that LS2/LS3 is fully open and LS1/LS4 is fully closed,
and that the guy who designed this used those stubby golf-ball sized crayons.

 

[Minuteman]

Hey, thanks Rick!

Yes, I would think the designer rode to school on the short bus.

 

[480sparky]

The OHDs I've installed will go up without being held, but not down... that must be held in.

 

[Rampage_Rick]

Momentary to open, press and hold to close:

<--- [/]STOP ---+---+--- []UP ---+--- [/]LS-UP --- (/)DN --- ()UP --->
                |   +--- ()UP ---+
                |
                +--- []DN --- [/]LS-DN --- (/)UP --- ()DN --->

Connect C31 and LS3
Connect LS2 and E2
Connect LS1 and E1
Connect the Stop switch between C and C2
Connect the Up switch between C2 and C31
Connect the Down switch between C2 and LS4

 

[cadpoint]

<--- [/]STOP ---+---+--- []UP ---+--- [/]LS-UP --- (/)DN --- ()UP --->
                |   +--- ()UP ---+
                |
                +---+--- []DN ---+--- [/]LS-DN --- (/)UP --- ()DN --->

Connect C31 and LS3
Connect LS2 and E2
Connect LS1 and E1
Connect the Stop switch between C and C2
Connect the Up switch between C2 and C31
Connect the Down switch between C2 and LS4

I'll get back to U on that ... , AH, B- on Drafting, "A-" on Logic or was that strike 2 ?? ?

OH personal CPU was 81', Pretty good Year ... Depends I reckon ...

 

[Rampage_Rick]

B- ???

I guess I lost marks for not showing the rails. Next time I'll draw it in MS Paint... :grin:

Drag 'n Drop is soooo much easier...

 

[billsnuff]

ind overhead door wiring

ind overhead door wiring

C to the stop and from the stop to up and down
A1 and B2 to up and down

working on the other two...........

 

[billsnuff]

this thing still has me out in left field..........both coils have a neutral or -
need to supply hot or + to a1 or b2 (up & down) if a1 is up then circuit is energized by a1-e2 contacts with e1-b2 contacts keeping the down circuit open...........e2 then series thru ls2 (nc) to ls3 to c31 (now closed) to c4...but i don't know how c4 get to neut or -..........once the door reaches the upper limit it opens and drops out holding contacts............the other two wires are staring me in the face but for the life of me i can't see them yet......

does any of this make any sense to anyone :-?

 

[billsnuff]

c to stop
stop to up and down
e2 to up
e1 to down

series c31 c2 ls2 and ls3 - parallel c31 & ls3 on up ( c and e1)
series c32 c4 ls1 and ls4 - parallel c32 & ls4 on down (c and e2)

connect ls2 to e1 and ls4 to e1

five wires: c - e2 - e1 - c31 - c32

Holding contacts both up and down............:smile:

 

[ronaldrc]

I got bored again

I don't know up from down
So if this don't work interchange LS3 and LS4







http://home.comcast.net/~ronaldrc/wsb/Garage_Door.jpg

Ronald

 

[ronaldrc]

I got bored again

I don't know up from down
So if this don't work interchange LS3 and LS4

http://home.comcast.net/~ronaldrc/wsb/Garage_Door.jpg



Ronald

Thanks for the tip Roger