FUNCTION CODE 150 CALIBRATION
ON-LINE CALIBRATION
I-E96-322A
B - 5
5. Insert the module in the MMU card cage.
6. Repeat Steps 1 through 3.
7. If the valve oscillates at any demand level, remove the HSS
module and lower the gain (dipswitch S2) to the next setting.
For example, if the gain is 13 (pole 4 is closed), change the gain
to 10 (close pole 5, open pole 4).
8. Insert the module in the MMU card cage.
9. Repeat Steps 1 and 2 to check valve operation at each
demand level. The controller gain is set when this point is
reached and smooth valve operation is obtained.
10. Record the date, time, controller gain setting and the
names of the personnel tuning the controller in the space pro-
vided in Table
. Update the controller tuning log when mak-
ing any adjustment in controller tuning.
NOTE: Do not start operating the HSS module until S3 of function
code 150 is reset to 0. A calibration cycle could start if the module is
reset and S3 is set to 1.
ON-LINE CALIBRATION
On-line calibration with function code 150 is possible when
there are other controlling valves on-line that are operating
properly. The HSS modules for those valves will compensate for
the repositioning of valve and actuator in calibration. Use a
calibration cycle time of 35 minutes or more when doing an
on-line calibration. To do an on-line calibration, refer to
and do the steps of the servo valve and
actuator calibration procedure.
