Models 2510 and 2510-AT User’s Manual PID Control Concepts 4-13
9. Wait until the autotune process is complete. The unit will display messages on the
front panel to indicate autotune progress, and it will generate an SRQ if pro-
grammed to do so (see Section 7). To abort the autotune procedure, you must cycle
power.
10. Once the autotune procedure is complete, you can use the MSETtle or MOVershoot
GAIN, DERivative, and INTegral queries to request the autotune gain, derivative,
and integral constants for minimum settling or minimum overshoot as desired.
If you are satisfied with the results, you can send the following commands to trans-
fer these tuning constants to the appropriate registers for usage:
• :SOUR:TEMP:ATUN:LCON:MSET:TRANS — Accept and install MSET
constants as defaults.
• :SOUR:TEMP:ATUN:LCON:MOV:TRANS — Accept and install MOV con-
stants as defaults.
NOTE To retain these tuning constants after cycling power, be sure to save them as
power-on defaults by using the SAVESETUP selection in the main MENU.
11. If the results are not exactly what you ideally want, use the following manual PID
loop constant commands to fine tune the system using the autotune values as a
starting point:
• :SOUR:TEMP:LCON:GAIN <gain> — Set manual PID gain constant.
• :SOUR:TEMP:LCON:DER <derivative> — Set manual PID derivative
constant.
• :SOUR:TEMP:LCON:INT <integral> — Set manual PID integral constant.
Also, you can use the TAU? and LAG? queries to request the corresponding Tau and Lag
constant values.
Autotune complete
Your can program the Model 2510-AT to generate an SRQ when the autotune process is
complete by setting bit 7 in both the Operation Event Enable and Service Request Enable
registers. See Section 7 for details.
To Next Page
Loading...
Need help?
General
