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Timer Wiring

stroked93

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Dec 27, 2007
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Omaha Nebraska
This is not garage related, however I know you guys can help. I need to build a reset-able timer that will turn on a regular 120 volt outlet every 30 minutes. I have been racking my brain for weeks and just lack the knowledge. I operate a warehouse for a CAT dealer. I want a reminder light to turn on every 30 minutes to alert the staff we need to run parts out to the shop. press button or turn timer to shut off and restart 30 minutes again. I will ship a Nice CATERPILLAR care package to the member who comes up with the used solution! Please help.
 
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3rdgen

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London Ont
Look into Allen Bradley count down relays you would have to make a little control cabinet but wouldn't be too hard to have a light and push button to reset it .
 
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stroked93

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There is WiFi, looked at these timers but they shut off after a predetermined duration. I need my beacon to blink until somebody turns it off. and restart the 30 minutes at that point. so the deliveries will not be on a set schedule.

IS there wifi available?

If so how about a programmable WiFi outlet?

Not sure if it has the ability to do the exact programming u want but its worth a look.

https://www.amazon.com/gp/aw/d/B00Z...=M0JNPVRCB6AC1FBXPXD2&dpPl=1&dpID=71MryIYm5YL
 
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stroked93

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not to over simplify the issue. but I want to know if the lights blinking the shop is waiting. if its off we have taken them their parts.
 

happy2rv

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Huntsville, AL
There are many ways to accomplish this. As suggested, probably the simplest is a mechanical timer switching a relay such that when the time is up the relay switches the load on until it's reset. However, it wouldn't be too hard to do this with automation. It would be fairly easy to set up an arduino or raspberry pi to do this. Using a raspberry pi you could easily add network connectivity and the ability to expand functionality. For instance, if the light hasn't been reset within a certain time frame e-mail someone or take some other automated action. You could also add web interface or another switch to allow the shop to trigger an action if desired.

This wouldn't be a terribly complicated thing to set up for someone familiar with the pi. However it would take a fair amount of work, time, and testing to make a polished user friendly product that does it without tinkering and knowledge of how it works behind the scene such that you could just plug it in and go without any setup or fiddling.
 

cybrdyke

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You can reverse wire a spring wound count down timer so that the light blinks when it's off and then wont blink when it starts counting down from 30 minutes....until it gets to zero and then starts blinking again.
CD
 
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stroked93

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ard

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One of these:

http://www.macromatic.com/search?q=THR-3836U

You want to use the 'WATCHDOG' mode. (this is a common term- kind of like a deadman switch- it runs and activates if someone fails to reset it in time. In your case if someone resets it (having delivered the parts) before the 30 minutes, the light wouldnt come on, but the timer would reset for another 30 min)

You will have a 'reset' button- each time someone hits it, the timer restarts for 30 minutes.

You would connect a light to the output that says NC (light would be on, then you hit the timer light goes off and timer runs 30 mintes- comes on, time to deliver and hit reset)

http://www.macromatic.com/uploads/files/pdf/instruction_sheets/901-0000-295.pdf

Need a box, a cord to plug it in, a panel mount red or green button and a cord out with a receptacle for the light....

I like this because there is a single button to operate it- nobody sets timers, etc.

Source: http://www.ebay.com/itm/Encapsulate...bcbe2be&pid=100005&rk=6&rkt=6&sd=121749943157 you can also order zoro direct, not on fleabay
 
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stroked93

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Outstanding. We have a winner! PM me your address. I will also post a picture after its built. Thanks everyone for your ideas.


One of these:



http://www.macromatic.com/search?q=THR-3836U

You want to use the 'WATCHDOG' mode. (this is a common term- kind fo light a deadman switch- it runs and activates if someone fails to reset it. In you case if some reset (and delveired parts) before the 30 minutes, the light wouldnt come on, but the timer would reset fo another 30 min)

You will have a 'reset' button- each time someone hits it, the timer restarts for 30 minutes.

You would connect a light to the output that says NC (light would be on, then you hit the timer light goes off and timer runs 30 mintes- comes on, time to deliver and hit reset)

http://www.macromatic.com/uploads/files/pdf/instruction_sheets/901-0000-295.pdf

Need a box, a cord to plug it in, a panel mount red or green button and a cord out with a receptacle for the light....

I like this because there is a single button to operate it- nobody sets timers, etc.

Source: http://www.ebay.com/itm/Encapsulate...bcbe2be&pid=100005&rk=6&rkt=6&sd=121749943157 you can also order zoro direct, not on fleabay
 

mm08822

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Jan 13, 2012
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5,848
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NJ
One of these:

http://www.macromatic.com/search?q=THR-3836U

You want to use the 'wacthdog' mode.

You will have a 'reset' button- each time someone hits it, the timer restarts for 30 minutes.

You would connect a light to the output that says NC (light would be on, then you hit the timer light goes off and timer runs 30 mintes- comes on, time to deliver and hit reset)

http://www.macromatic.com/uploads/files/pdf/instruction_sheets/901-0000-295.pdf


Need a box, a cord to plug it in, a panel mount red or green button and a cord out with a receptacle for the light....

Mine also flashes as requested.......
 

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matt_i

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SE Michigan
Using straight up industrial components it would need 3 timers, 2 for the "flasher" for time-bulb-on, time-bulb-off and then the 30 min timer. There are industrial signalling lights that use capacitative delay to perform that function but the EMI can cause other weird stuff to happen.

Based on the complexity of the flasher it would probably be worth it to change voltages and use a 12vdc ladder and an automotive turn signal relay as a purchased part. The 30 min timer could also be a 120vac powered item (as that's likely a lot more common than a 12vdc x 30 min timer-on-delay element) but then put the dry contacts into the 12v ladder.

The 21EP68 (WW Grainger) timer module is not cheap at $57.00....however its nice to have multi-voltage and AC/DC input capability.

Just for comparison a low-load "LED" flasher is around $11
https://www.amazon.com/dp/B01KZJDGIS/?tag=atomicindus08-20
 
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mm08822

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Using straight up industrial components it would need 3 timers, 2 for the "flasher" for time-bulb-on, time-bulb-off and then the 30 min timer. There are industrial signalling lights that use capacitative delay to perform that function but the EMI can cause other weird stuff to happen.

Based on the complexity of the flasher it would probably be worth it to change voltages and use a 12vdc ladder and an automotive turn signal relay as a purchased part. The 30 min timer could also be a 120vac powered item (as that's likely a lot more common than a 12vdc x 30 min timer-on-delay element) but then put the dry contacts into the 12v ladder.

The 21EP68 (WW Grainger) timer module is not cheap at $57.00....however its nice to have multi-voltage and AC/DC input capability.

Just for comparison a low-load "LED" flasher is around $11
https://www.amazon.com/dp/B01KZJDGIS/?tag=atomicindus08-20


If you keep the on and off times the same, you only need 2 timers. This can all be done with 120vac. No need to involve a dc power supply.

If there was no flash requirement, it is then a single on delay timer set at 30 mins that gets reset with a nc pb.
 

CJ7VFR

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Central New Jersey
Odd question, but if your employees can't remember to run parts out to the shop every so often as part of their regular routine, how are you going to get them to remember to shut the light off on the timer when they do?

Even if you put in the light, and it works, what happens if they run parts into the shop and then forget to shut off the light? Someone will think that parts need to go to the shop only to find out that someone already did that.

You can't really remove the human factor from this situation, and after awhile I bet workers will start to screw with the light just for fun!

Jim
 
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stroked93

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Omaha Nebraska
you are quite right.

Odd question, but if your employees can't remember to run parts out to the shop every so often as part of their regular routine, how are you going to get them to remember to shut the light off on the timer when they do?

Even if you put in the light, and it works, what happens if they run parts into the shop and then forget to shut off the light? Someone will think that parts need to go to the shop only to find out that someone already did that.

You can't really remove the human factor from this situation, and after awhile I bet workers will start to screw with the light just for fun!

Jim
 

nh_yota

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Mar 10, 2015
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Location
Seacoast New Hampshire
Odd question, but if your employees can't remember to run parts out to the shop every so often as part of their regular routine, how are you going to get them to remember to shut the light off on the timer when they do?

Even if you put in the light, and it works, what happens if they run parts into the shop and then forget to shut off the light? Someone will think that parts need to go to the shop only to find out that someone already did that.

You can't really remove the human factor from this situation, and after awhile I bet workers will start to screw with the light just for fun!

Jim

It's 2017 and you need a light bulb to manage inventory?
 
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stroked93

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362
Location
Omaha Nebraska
Thank you all for your time on this. I ordered the parts to assemble it on Friday and will post results. Love this forum.
 
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stroked93

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Dec 27, 2007
Messages
362
Location
Omaha Nebraska
The light and timer works as described. And so so far have resolved my issues. Not so much dumb or lazy employees as I have a great group of folks. My warehouse is not quite large enough to have people dedicated to each individual task that needs done. so the 9 of them share duties. You get busy and just flat do not know how long its been since someone else went. So i plugged a blinking beacon into the timer now if its still blinking the parts havent went. Thanks again.
 
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