Many customers ask how to set up a PID temperature controller for their furnaces. The following is an example of setting a PID temperature control program with a 6-segment profile, hope this can help you. If you prefer to video tutorial, please find it at the end of this article.
For a complicated temperature control profile, we strongly suggest you make the drawing as Fig.1 then make a form as table 1 to list all data in every segment.
Fig. 1 is the temperature profile that we would like to set.
According to this profile, you shall list all segments in the following Table
|Segment #||Symbol in Panel||Data to be In-put||Meaning in the program|
|1||C 01||0 (℃)||Initial Temperature|
|2||t 01||30 (min.)||Ramping time from 0 – 300℃|
Average Heating rate is 10℃ /min
|3||C 02||300 (℃)||Target temperature value to first|
heating stage ( 300℃ )
|4||t 02||10 (min.)||Soaring time at 300 oC stage|
|5||C 03||300 (℃)||Temperature value at the heating flat|
|6||t 03||130 (min.)||Second Heating time from 300 -1600℃|
The average heating rate is 10℃ /min
|7||C 04||1600 (℃)||Target temperature value to peak|
heating stage ( 1600℃ )
|8||t 04||30 (min.)||Soaring time at 1600 oC stage|
|9||C 05||1600 (℃)||Temperature value at peak heating flat|
|10||t 05||100 (min.)||Cooling time to 500℃|
The cooling rate is 11℃ /min
|11||C 06||500 (℃)||Target temperature to be cooled ( 500℃)|
|12||t 06||-121||Program end, Out-put power off. Furnace|
cooling down naturally
(t 06 = -121 is an order to stop running.
Using 4 keys of to enter data listed in the above table into the controller separately, then, you finish one temperature control program finish Please be noted that “ t xx “ is the time value for the XX segment. It can be set from 1- 9999 minutes. However, if “t xx “is set as the following values, it can be as a special order. These orders only can be used in complicated multi-temperature profile programs.
If txx = 0: Controller will be paused at xx segment (Hold)
If txx = – (1-150) Negative value is a control order, which lets the program stop running, or jump to another segment.
If txx = – (Ax30+B) , here B values is 1- 30. This indicates program will jump to the segment at B value
When A=0, only execute the segment jump function.
When A=1, the program will cut off power delay
When A=4, B=1, Program will execute a “stop “order
How To Set Up a PID Temperature Controller
If you have further questions about PID temperature controller setting , please feel free to contact us.
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