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26
Part Two
CONTROL MENU
(continued)
MENU ITEM
SOFTWARE
NAME ITEM
DESCRIPTION
ITEM RANGE
DEFAULT
VALUE
Kc OFFSET
Kc OFFSET
WARNING:
The
Kc OFFSET
sets the pressure control
PID
variable.
DO NOT CHANGE THIS VALUE
UNLESS YOU HAVE A THOROUGH
UNDERSTANDING OF PID CONTROL
LOOPS. CONTACT TSI FOR ASSISTANCE
PRIOR TO CHANGING ANY VALUES.
Contact TSI for assistance in determining your
control problem and for instructions on how to
change a value. Incorrectly changing a value will
result in poor or non-existent control.
The
Kc OFFSET
item changes the gain control coefficient of
the secondary control loop (pressure control loop). The pressure
control loop is very slow when compared to the primary flow
control loop. This menu item should not be changed unless
problems with the pressure control loop can be established
(confirm problem is not with primary flow control loop).
When this item is entered, a value for Kc is indicated on the
display. Decreasing Kc
will slow the pressure control loop
down, while increasing Kc will increase the pressure control
loop speed.
Kc = 0–1000
The range of values is
very large. Poor control
will occur if values are
more than twice or less
than ½ the default value
Kc = 200