switching ON a 12Vdc motor for 15 seconds every day at a specific time
switching ON a 12Vdc motor for 15 seconds every day at a specific time
(OP)
Hi guys,
My problem is that i have a motor that needs to be turned ON once, every day at a programmable time and for a duration of 10-20 seconds. The power of the motor is bellow 80W.
I have searched throught the net on Merlin Gerin, Schrack and similar catlogues but can't find any programmable time switch that can run in a pulse mode and also on 12VDC (i have a batterie that has to drive the motor and the timer). Usually they have those time switches on 230Vac but i need 12Vdc... Can somebody help me??
To conclude - the facts:
- 12Vdc power supply
- once a day at a specific programmable time to turn ON the motor
- power of the motor is bellow 80W and it is running on 12Vdc also
- duration of the pulse is between 10 and 20 seconds
- it needs to be as simple as possible (in order to be also the cheapest possible)
- it needs to be ready build - not a diy thing (maybe something similar to this: http: //www.hugo -mueller.c om/weekly- time-switc hes/muelle r-sc-08-11 -paladin-1 72-110,p,e n,1,1.html )
thank You very much for any help You can give me
best regards
sunny
:)
My problem is that i have a motor that needs to be turned ON once, every day at a programmable time and for a duration of 10-20 seconds. The power of the motor is bellow 80W.
I have searched throught the net on Merlin Gerin, Schrack and similar catlogues but can't find any programmable time switch that can run in a pulse mode and also on 12VDC (i have a batterie that has to drive the motor and the timer). Usually they have those time switches on 230Vac but i need 12Vdc... Can somebody help me??
To conclude - the facts:
- 12Vdc power supply
- once a day at a specific programmable time to turn ON the motor
- power of the motor is bellow 80W and it is running on 12Vdc also
- duration of the pulse is between 10 and 20 seconds
- it needs to be as simple as possible (in order to be also the cheapest possible)
- it needs to be ready build - not a diy thing (maybe something similar to this: http:
thank You very much for any help You can give me
best regards
sunny
:)





RE: switching ON a 12Vdc motor for 15 seconds every day at a specific time
http://www
Thanks to itsmoked for the original link.
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: switching ON a 12Vdc motor for 15 seconds every day at a specific time
we need to fix the motor control unit that is damaged now... it is using 12Vdc and the motor is also 12Vdc... also i have only a car battery to do the job....
the control unit has been modified - it is a normal 230Vac programmable time switch that you can plug into the main power outlet like in your houses, to control, for example, a water pump for your pool. The time switch has 1 minute as a shortest time you can set. So, the modification was to shorten that time even more using NE555 chip... it was working, but it was poorly made... what i would like to do is to make it with proffesional, ready made parts... like timers that can do that... the last option is to build another of these that we were using allready because they are not reliable....
i have found a timer and a turn ON delay... but the problem is to find these things running on 12Vdc... it is a real problem....
RE: switching ON a 12Vdc motor for 15 seconds every day at a specific time
0505975; Is this a one-off or a bunch of them?
Examples:http://www
http://www
http:/
http://www.factorymation.com/s.nl/it.A/id.765/.f
Keith Cress
kcress - http://www.flaminsystems.com
RE: switching ON a 12Vdc motor for 15 seconds every day at a specific time
BUT...
i can't use link no. 1 and 2 because those are timers - not clock's ... i need a regular clock that will turn the motor ON each day at exactly 6:00PM (for example) and turn it OFF 15 seconds later.... and timer can't do that... i need to adjust the time when it needs to turn ON and OFF... and the time when the motor is turned ON needs to be between 10-20 seconds adjustable... that is what i need...
so link no 3 would be good BUT it has a minimum time setting of 1 minute and i need less....
so something between the link 3 and link 4 will be just right. ... if you look at the datasheet of the link 4 device here:
http://factorymation.info/relays/821TD10H-UNI.pdf
you can see on the page no. 2 the diagram A that is telling exactly what i need....but in one device...
on diagram A you have a clock that is making an impulse and a turn on delay shortens that impulse to just 10-20 seconds...
and what i need is one device that is doing just that...
when the time comes - it turns the motor on and after 10-20 seconds it turns it off again.... and everything should run on 12Vdc.....
RE: switching ON a 12Vdc motor for 15 seconds every day at a specific time
The order number for the 12 V DC version is
6ED1 052-1MD00-0BA6
It is fun and easy to use and you can do much more than just turning a motor on/off with it.
Gunnar Englund
www.gke.org
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100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...
RE: switching ON a 12Vdc motor for 15 seconds every day at a specific time
it seems to me that LOGO is a bit complicated piece of equipment for such a simple job....
what is the price of the LOGO unit???
RE: switching ON a 12Vdc motor for 15 seconds every day at a specific time
Gunnar Englund
www.gke.org
--------------------------------------
100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...
RE: switching ON a 12Vdc motor for 15 seconds every day at a specific time
A car battery is only good for about 65Ah so if the timer is not to kill the battery all by itself, in less than a week, you need it to draw less than 300mA or 3.6 Watts.
It's pretty amazing we can't find one that has a little microcontroller, an LCD, a realtime clock, some buttons, and a heavy duty relay in a nice little box... It would probably draw less than 0.5mA.
I'm looking at a board in my hand that has everything in the list but the relay..
Keith Cress
kcress - http://www.flaminsystems.com
RE: switching ON a 12Vdc motor for 15 seconds every day at a specific time
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: switching ON a 12Vdc motor for 15 seconds every day at a specific time
i try to go cheap, ready made (if possible industrial) and reliable - i know i know... i am probably asking to much...
the interesting thing is that i have found the clocks that have but are running on 230Vac.... so i am even thinking on using a small inverter (inverter up to 20VA of power) to boost the voltage to 230Vac... this is also an option... i think that i might go with the inverter and a clock to a point of 100USD costs.... i have to check the timer prices i have found...
it is also a possible solution to use a clock that is turning on/off the bell in schools ... this one also might work on 12Vdc...
and i am thinking - a solar technologie is also running on 12Vdc and up.. i am thinking - is there not one piece of an equipment that will do the turning on/off a motor where you can use only solar cells and a car battery.... i am puzzled - very interesting that we can't find a ready made cheap solution .... i was even looking for a cheap chinese products... didn't found anything.... maybe those clocks exists but i can't find them.... that is why i turned to you guys...
@itsmoked - yes You are right - total consumption is also to be considered.... i am thinking on using a solar cells to do the job of cherging the batteries... but first i have to solve this timer thing.......
@waross - can you show me some of those - which alarm clock ??? cheap timer is usually for household and has to be optimized - i would like to have everything ready made - to have a finished thing looking proffesionally made .. not to diy things... i know how to make it diy... using NE555 and a cheap timer - but i would also like to avoid that... i am thinking that this solution might not be reliable enough - that is why i would like to go on a ready made product...
a question - how about a regular timer with a pulse mode that can run on 230Vac and power it with an inverter... can we find low wattage inverters - where - and also relatively cheap.... i am preety sure that 20VA would be enough... i found similar inverters in a car equipment - for converting car battery voltage to 230Vac for a notebook or something.... what is the consumption of that small inverter and where to find them... i can't find them small - like to mounted on a DIN rail or something... we have some dc/dc converters in our transformer stations for powering some electronic equipment - i am wondering - ther might be some dc/ac converters that are small.. any ideas...?
thanks for interest and best regards...
RE: switching ON a 12Vdc motor for 15 seconds every day at a specific time
Keith Cress
kcress - http://www.flaminsystems.com
RE: switching ON a 12Vdc motor for 15 seconds every day at a specific time
that is why i didn't want to go for the inverter but right away on a 12Vdc power supply clocks...
but those are impossible to find....
man - this is a problem...
RE: switching ON a 12Vdc motor for 15 seconds every day at a specific time
Of course, that means that someone has to write the code. If you do it yourself and don't count your time (not a very wise thing to do), then you could have that function at a very low cost.
Gunnar Englund
www.gke.org
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100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...
RE: switching ON a 12Vdc motor for 15 seconds every day at a specific time
I'll let itsmoked comment on driving the 9 Volt backup circuit from a 12 Volt source. Current will be less if you disable the display.
But I like Gunnar's solution also.
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: switching ON a 12Vdc motor for 15 seconds every day at a specific time
i am affraid that i might go after the PIC or a wallmart alarm clock afterall... those seems to be the only solutions....
if somebody has any other idea i would appreciate it - the rest of You guys that hepled here - thank You very much - You are realy great....
best regards
sunny :)
RE: switching ON a 12Vdc motor for 15 seconds every day at a specific time
I should know better than saying this: I can ask my SW guy to do the 24 h thing and put into an old rudimentary PIC if you want me to. But do not expect any support from us! Just a programmed chip and a note saying where the output pin is.
Gunnar Englund
www.gke.org
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100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...
RE: switching ON a 12Vdc motor for 15 seconds every day at a specific time
RE: switching ON a 12Vdc motor for 15 seconds every day at a specific time
Yours
Bill
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: switching ON a 12Vdc motor for 15 seconds every day at a specific time
:D
RE: switching ON a 12Vdc motor for 15 seconds every day at a specific time
Gunnar Englund
www.gke.org
--------------------------------------
100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...
RE: switching ON a 12Vdc motor for 15 seconds every day at a specific time
Keith Cress
kcress - http://www.flaminsystems.com
RE: switching ON a 12Vdc motor for 15 seconds every day at a specific time
o.k. - guys thanks for help... i know now that DIY is my only option... oh well :D
RE: switching ON a 12Vdc motor for 15 seconds every day at a specific time
it seems i've found it....
Hager seems to have such device.
on this link you can download the catalogue:
http:
and on page of the catalogue 4.10 you have a device that is called EG103V.. it is runing on 12/24V AC/DC and can be programmable to work in a pulse mode from 1s to 30min... this seems to be the thing i was looking for....
i have to contact Hager further to see if i am right....
:D
yeesss!!