Timing circuit help
Timing circuit help
(OP)
How do I make this work, and what type of timer do I need?
A part is moving down a conveyor and hits a normally open limit switch and conveys past the limit switch and travels for about 10 seconds then I want an 110v solenoid to be energized (after the 10 seconds previously stated)and then remain energized for 30 seconds and then denergize.
If another part hits the limit switch before the 30 seconds are up then it will stay energized until there is no more parts.
A part is moving down a conveyor and hits a normally open limit switch and conveys past the limit switch and travels for about 10 seconds then I want an 110v solenoid to be energized (after the 10 seconds previously stated)and then remain energized for 30 seconds and then denergize.
If another part hits the limit switch before the 30 seconds are up then it will stay energized until there is no more parts.





RE: Timing circuit help
micros ( e.g. from ATMEL for << 5 usd ) but you need to program them in assembly or "C". You can get PC compatible
from <www.jkmicro.com> for <<75 usd or from <www.bagotronics.com> for about twice of this -- both
PC compatible, programmable in any PC language.
You could add a solid state switch and program it in a few
hours.
<nbucska@pcperipherals DOT com> subj: eng-tips
RE: Timing circuit help
RE: Timing circuit help
RE: Timing circuit help
1) Time Delay ON, 1-NO, 10 sec(T10)
2) Time Delay ON, 1-NC, 30 sec(T30)
3) COntrol Relay, 1-NO(R1)
4) Limit Switch, 1-NO, 1-NC(LS)
I will try to "draw" schematic in text, hope it makes sense.
---(LS NO)---------(T30 NC)--------(R1)
I I
I I
---(R1 NO)---I I---(T10)
----(T10 NO)-----------------------(SOL)
I
I
I--(LS NC)---(T30)
When the LS makes the first time it will latch in R1 and T10 and these will stay in until T30 times out.
After 10 sec SOL will turn on and stay on until T30 times out.
If LS does NOT make in 30 sec T30 will time out and turn off T10 and R1, reseting the circuit.
There is probably a cleaner way to do it but this is a start.
Barry1961
RE: Timing circuit help
On the first rung.
LS NO and R1 NO are in parallel then T30 NC is in series then R1 and T10 coils are in parallel.
Barry1961
RE: Timing circuit help
RE: Timing circuit help
http://www.ab.com/plclogic/pico/
http://www.ab.com/manuals/cp/1760-um001b-en-p.pdf
Approx. cost $150.00 (USD)
RE: Timing circuit help
http://www.schneider-electric.ca/www/en/products/automation/html/plcio.htm
Scroll down to twido.
Regards,
TULUM