Flowserve Logix 3200IQ Digital Positioner - Manual (Page 10)

Flowserve Corporation 1350 N. Mountain Springs Parkway 1978 Foreman Dr.
Flow Control Division Springville, Utah 84663-3004 Cookville, TN 38501
www.flowserve.com Phone: 801 489 2233 Phone: 931 432 4021
FCD AXAIM3200-00 9/04 Page: 10 of 32
© 2004, Flowserve Corporation, Printed in USA
Automax Logix 3200IQ Digital Positioner
Installation, Operation and Maintenance Instructions
Auto Tune
This switch controls whether the positioner will auto tune
itself every time the QUICK-CAL button is pressed or use
preset tuning parameters.
On – On enables an auto tune feature that will
automatically determine the positioner gain settings
based on the current position of the adjustable GAIN
switch setting and response parameters measured
during the last QUICK-CAL. The GAIN switch is live,
meaning the settings can be adjusted at any time by
changing the rotary switch position. (Note that there is a
small black arrow indicating the selection. The slot in
the switch is NOT the indicator.)
Figure 13: Adjustable GAIN Switch
If the adjustable GAIN selector switch is set to “E”
with the auto tune switch on, a Flowserve standard
response tuning set will be calculated and used based
on response parameters measured during the last
QUICK-CAL.
If the adjustable GAIN selector switch is set to “D”, “C”,
“B”, or “A” with the auto tune switch on, progressively
lower gain settings will be used based on response
parameters measured during the last QUICK-CAL.
If the adjustable GAIN selector switch is set to “F”,
“G”, or “H” with the auto tune switch on, progressively
higher gain settings will be calculated and used based
on response parameters measured during the last
QUICK-CAL.
Off – Off forces the positioner to use one of the factory
preset tuning sets determined by the adjustable GAIN
selector switch. Settings “A” through “H” are progress-
ively higher gain predefined tuning sets. The GAIN
selector switch is live and can be adjusted at any time
to modify the tuning parameters.
NOTE: “E” is the default adjustable GAIN selector
switch setting for all actuator sizes. Raising or
lowering the gain setting is a function of the
positioner/valve response to the control signal,
and is not actuator size dependent.
Configuration Switches
Enabled – By selecting Enabled, the Logix 3200IQ
will read all of the configuration switches each time a
QUICK-CAL is performed to determine the configuration.
Disabled – Selecting Disabled retains the last
configuration in memory (from the last successful
calibration) before the switch was set to Disabled.
With this setting a QUICK-CAL only zeros and spans
the positioner.
Stability Switch
This switch adjusts the position control algorithm of
the positioner for use with low-friction control valves
or high-friction automated valves.
Low-Friction Valves – Placing the switch to the
left optimizes the response for low-friction, high-
performance control valves. This setting provides
for optimum response times when used with most
low-friction control valves.
High-Friction Valves – Placing the switch to the right
optimizes the response for valves and actuators with
high friction levels. This setting slightly slows the
response and will normally stop limit cycling that can
occur on high-friction valves.
Description of Cal DIP Switch Settings
The eighth DIP switch selects between two calibration
options. The function of the Cal DIP switch is described
below.
Auto – Select Auto if the valve/actuator assembly has
an internal stop in the open position. In Auto mode the
positioner will fully close the valve and register the 0%
position and then open the valve to the stop to register
the 100% position when performing a self-calibration.
See detailed instructions in the next section on how to
perform an auto positioner calibration.
Jog – Select Jog if the valve/actuator assembly has no
physical calibration stop in the open position. In the
Jog mode the positioner will fully close the valve for the
0% position and then wait for the user to set the open
position using the Jog buttons labeled with the up and
down arrows. See the detailed instructions in the next
section on how to perform a manual calibration using
the Jog buttons.
WARNING: During the QUICK-CAL operation the
valve may stroke unexpectedly. Notify proper
personnel that the valve will stroke and make
sure the valve is properly isolated.
A
GAIN
B
C
D
E
F
G
H