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Off Delay Timers in Series

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ER1990

Electrical
Joined
Oct 25, 2023
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1
Location
US
Timer_rtgxyb.png
Timer_Function_b2wo0r.png
Schematic_q1cvgf.png
PLC_Logic_qduc73.png


A customer of mine wants to start a sequence utilizing two timers in series once the "Wireless Controller" contact is closed. I did the logic in PLC but then the customer changed his mind when he found out how much it was going to cost for a PLC brick. So he asked if I can do a hardwire system. The sequence of operations is as follows: wireless controller contact is closed which then starts the off-delay timer #1 to energize a ball valve for 30 seconds. Once the 30 seconds is over, off-delay timer #2 needs to then start its timer for 5 seconds to energize the flush valve. I am stuck on how to make this happen with the hardwire system that's being requested. Any advice is appreciated.
 
Put the second timer in parallel with the ball valve or use a second set of contacts from the first timer.

--------------------
Ohm's law
Not just a good idea;
It's the LAW!
 
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