The generator winding temperature, generator hot and cold air temperature and generator exciter hot air temperature are all set to 120 deg C alarm set point. I would like to change the alarm setpoint of generator exciter hot air from 120 deg C to 85 deg C. How to add a new control constant for the generator exciter hot air temperature.

 

We would need to be able to see the sequencing or application code running in the Speedtronic to be able to tell you exactly what you need to do and how. I don't know if it's as simple as just adding a new Control Constant. How would the new Constant be used in the comparator for only the exciter hot air temperature? Would you need to have a separate process alarm?

I can tell you one thing to do if you believe all you need is a new Control Constant. Find the Control Constant that's currently being used for the function you described and navigate to it's "pin" definition. MAKE A BACK-UP OF THE .m6b FILE! Then you need to have the proper password privilege and you can add a new pin to the same "segment", filling out all of the assignment values to be the same as the Control Constant you are basically "copying" (except for the value), and then you should be able to use the new Control Constant as you deem appropriate. You will need to validate and build and download and re-boot. And then verify that it works correctly.

That's how most of us learned how to modify sequencing or application code; by finding something that was similar to what we wanted to do and "copying" it. No shame in copying in this case! In fact, copying is the best way to ensure you complete the tack properly.

Hope this helps!