Software Release: [App: 02.09.10051.00; Config: 2.9.20024; Built in PowerVision Configuration Studio Version: 2.9.23042;
BTL: 02.09.10015.00]
Section 40
42
00-02-0939
2019-06-13
detail the method of tuning the proportional-integral-derivative control loop commonly used in PLC
programming language.
NOTE:
When selecting PID Auto Throttle as the auto throttle type the Ramp Inc Rate
and Ramp Dec Rate in the Throttle menu should be set to 0 RPM per Second so the
PID does not combat the ramp rates set in the controller. This will require the user to
manually adjust the throttle rate in manual mode.
Linear Auto Throttle:
this throttle type uses the Pressure or Level start and stop setpoints as well
as the minimum and maximum RPM setpoints to linearly/proportionally throttle the engine from start
to stop depending on pressure or level. The throttle increases or decreases depending on the
setting of the transducer type selected. The linear tie to the start/stop should be used when desiring
to decrease throttle approaching the stop setting. See figure below as an example.
Example, Linear Auto Throttle:
This example shows level with the transducer type set to Empty
with auto level start at 7ft and auto level stop at 4ft. This example also shows a maximum RPM of
1800 and a minimum RPM of 1200. As the pump starts it ramps up to 100% (maximum throttle)
then slows linearly/proportionally as the level decreases until set stop level is reached with a 0%
minimum throttle.
NOTE:
In order for linear auto throttle to work correctly the auto start/stop function
and auto throttle method need to be set to the same transducer type.
Auto Running Loaded Speed
(Medium Security): this selection is present when selecting Running
Loaded RPM as the Auto Throttle Method. This setting will set the speed at which the controller will run in
auto mode when in the Running Loaded state.
Factory set to 2000 RPM.
Pressure Transducer
(Medium Security): This selection is only present when selecting Pressure Transducer
in the Auto Start / Stop Function or Auto Throttle Method.
Start Pressure
(Medium Security): This selection is present when selecting Pressure Transducer as
the Auto Start / Stop Function. When the pressure reaches this set point, an auto start will occur.
Factory set to 0 psi
Stop Pressure
(Medium Security): This selection is present when selecting Pressure Transducer as
the Auto Start / Stop Function. When the pressure reaches this set point, an auto stop will occur.
Factory set to 0 psi
START/STOP LEVEL
LINEAR AUTO THROTTLE (LEVEL)
M
IN
/M
A
X
R
PM
1800 RPM
1200 RPM
1300 RPM
1400 RPM
1500 RPM
1600 RPM
1700 RPM
4.5'
4ft
7ft
6.5'
6'
5.5'
5'
