Flowserve 3200MD - Manual (Page 16)

User Instructions - Digital Positioner 3200MD LGENIM0059-09 12/13
16
Off Off forces the positioner to use one of the factory
preset tuning sets determined by the rotary “Gain” selector
switch. Settings “A” through “H” are progressively higher
gain predefi ned tuning sets. The Gain selector switch can be
adjusted at any time to modify the tuning parameters.
!
NOTE: With Autotune on “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.
Spare Switch
If special features have been purchased they may be controlled
by this switch. See special documentation for more details.
Stability Switch
This switch adjusts the position control algorithm of the positioner
for use with low-friction control valves or high-friction automated
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.
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.
!
NOTE: This option is more effective on advanced units with the
optional pressure sensors installed.
7.4 Setup of the Cal Dip-Switch for the
Quick Calibration Operating Mode.
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 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.
7.5 QUICK-CAL Operation
The QUICK-CAL button is used to locally initiate a calibration of the
positioner. Pressing and holding the QUICK-CAL button for ap-
proximately 3 seconds will initiate the calibration. A QUICK-CAL can
be aborted at any time by briefl y pressing the QUICK-CAL button and
the previous settings will be retained.
If the Quick calibration switch (be careful not to confuse with the
QUICK-CAL button) is set to Auto and the valve/actuator assem-
bly has the necessary internal stops the calibration will complete
automatically. While the calibration is in progress you will notice a
series of different lights fl ashing indicating the calibration progress.
When the lights return to a sequence that starts with a green light
the calibration is complete. (See the table X for an explanation of the
various light sequences) The initial calibration of extremely large
or very small actuators may require several calibration attempts.
The positioner adapts to the actuator performance and begins each
calibration where the last attempt ended. On an initial installation it
is recommended that after the fi rst successful calibration that one
more calibration be completed for optimum performance.
If the Quick ca libration switch is set to Jog, the calibration will
initially close the valve then cause a small jump in the valve
position. The jog calibration process will only allow the user to
manually set the span; zero position is automatically always set
at the seat. If an elevated zero is needed a handheld or other PC
based confi guration software is required.
When performing a jog calibration the LED‘s will fl ash in a
sequence of Y-G-Y-R (yellow-green-yellow-red) which indicates
that the user must use the jog keys to manually position the
valve to approximately 100%. When the valve is approximately
100% open press both the and  buttons simultaneously to
proceed to the next step. The valve will then stroke and then wait
while fl ashing the Y-G-Y-R sequence again, allowing the user to
adjust the valve position a second time to exactly 100% using the
jog buttons. When the stem is properly positioned press both
the and  buttons simultaneously again to register the 100%
position and proceed. No more user actions are required while
the calibration process is completed. When the lights return to a
sequence that starts with a green light the calibration is com-
plete. (See the appendix for an explanation of the various light
sequences)
!
NOTE: The Quick-Cal function on performs a stroke calibra-
tion and auto-tunes the positioner. It does not perform a
pressure calibration or friction calibration which are neces-
sary to utilize the full Pro diagnostics features.