ChuckNorris
Jan 7, 2016, 04:16 AM
It's complicated..
I've got a switch Test/Auto/Off
In Auto mode..
I've got a fan that blows air through a heater battery to provide hot air . Everything is connected to a PLC . When I want to shut down the system , the fan will keep running for about 10 seconds to dissipate the heat from the heater battery and keep it healthy . PLC does everything automatic.
The problem comes when I want to do it without the PLC , in Test Mode ,when the PLC is disconnected, How can I keep the fan working for about 10 seconds after the heater battery stops. .
Thanks!
I've got a switch Test/Auto/Off
In Auto mode..
I've got a fan that blows air through a heater battery to provide hot air . Everything is connected to a PLC . When I want to shut down the system , the fan will keep running for about 10 seconds to dissipate the heat from the heater battery and keep it healthy . PLC does everything automatic.
The problem comes when I want to do it without the PLC , in Test Mode ,when the PLC is disconnected, How can I keep the fan working for about 10 seconds after the heater battery stops. .
Thanks!