12/1/2019 1:39 PM | |
Joined: 9/27/2006 Last visit: 9/25/2024 Posts: 12283 Rating: (2685) |
Hello M. Abzadeh; How do you write your setpoint for the furnace (we do not see your template)? If the setpoint is linked to a variable, you can change the value of the setpoint programmatically. You want the temperature of the furnace to increase by 200 C over 72 hours, the decrease at the same rate.That is a rate of 2,77 C every hour, or 0,046 C every minute, if you want a smoother ramp. For a step setpoint change every hour: Start when your temperature has reached 100 C on the first day, then check your Realtime clock for the next hour and add 2,77 C to the setpoint (if it is not required to be extremely precise, you can choose a factor of 3 C).. See smiffy's reply in this discussion: https://support.industry.siemens.com/tf//us/en/posts/real-time-clock/81797/?page=0&pageSize=10 When you reach 300 C, start decreasing the setpoint every hour by the same amount until you are back to 100 C. Hope this helps, Daniel Chartier |
Last edited by: dchartier at: 12/01/2019 14:47:20 |
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