Baker Hughes Apollo 3 - Page 150

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Table 38: PID Speed Control Mode Parameters (cont'd.)
Parameter
Description
Source1
The channel supplying the current to compare
against the Setpoint. By default, this is the
downhole tool Intake Pressure channel.
Pump Speed Ctrl
Speed control output (i.e. drive frequency
commanded by Apollo at this time). It will
reflect the PID output if 055 Drive Mode
is “PID Speed Ctrl” and Trigger 159 “Run
SpdCtrl PID” is SET. This is NOT a
parameter to be edited. It is a channel
(Chan 076 Pump Speed Ctrl) included on
this screen for information purposes.
Run SpdCtrl PID
Trigger 159 “Run SpdCtrl PID” is used to
control when the PID should be run if M055
Drive Mode is set to PID. If T159 is CLEAR,
(not SET), the PID will not be run and the
Manual Frequency setting for the current
system mode will be used as the output.
Select this trigger to access its Trigger Info
screen to adjust as needed. By default, the
PID will be run whenever the drive is running
and has reached the Start Frequency.
Low Clamp
Minimum drive speed that the PID control will
output. Leave at the default 0 to use the drive
Minimum Frequency.
High Clamp
Maximum drive speed that the PID control will
output. Leave at the default 0 to use the drive
Maximum Frequency.
Mtr PID Rev.Act
Parameter that describes the PID’s output
relationship to the control value. A PID is
forward acting if increasing the speed of the
drive increases the control value (i.e. running
the drive faster creates more downhole
current). A PID is reverse acting if increasing
the speed of the drive decreases the control
value (i.e. running the drive faster decreases
the fluid level in a tank that is being pumped
out of). Change as needed to match the
relationship between the pump speed and the
Source1 variable.