Internet PLC Forum

General => Technical support => Topic started by: wilfin on February 19, 2003, 03:00:59 PM

Title: Help with TOF
Post by: wilfin on February 19, 2003, 03:00:59 PM

I am trying to program a fan to cut off 10 seconds after a motor is shut off.  I am using Trilogi and do not understand how to get a timer to become an off-delay timer.  An example would be greatly appreciated.

Thanks,

William Finn

Title: Re: Help with TOF
Post by: support on February 21, 2003, 06:20:38 AM

Easy!  The following circuits turn on the fan when the "Start" button is pressed.  The fan turns on the countdown timer T1. When T1 times out, its contact will disconnect the Fan.


 ? ?Start ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? T1 ? ? ? ? ? ? ? ? ? ? ? ? ? ?Fan
|---| |----------|/|-------(OUT)
| ? ?Fan ? |
|---| |----+
|
| ? Fan ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?T1
|---| |-------------(TIM)