Logix
®
Digital Positioners FCD LGENIM0110-0 05/16
flowserve.com
30
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 complete.
The jog calibration process will only allow the user to set
the span. If an elevated zero is needed a handheld or
ValveSight
®
DTM are required.
21.4.2 Tuning Options
Quick-Cal Custom Gains
-
This is typically the fastest way
to achieve ideal gains. Set the Auto Tune Configuration
Switch to On and the Selectable GAIN Switch to “E”. Then
perform a Quick-Cal. During the Quick-Cal, custom tuning
parameters will be determined based on measured
response parameters. The gains can then be fine-tuned by
adjusting the Selectable GAIN Switch. Selecting “D” “C” or
“B” will progressively provide a more stable response.
Selecting “F” through “J” will progressively provide a more
active response. In most cases
selecting “E” will give the
best results. This is the default setting for all actuator
sizes. Raising or lowering the Selectable GAIN Switch
setting is a function of the positioner/valve response to the
control signal, and is not actuator size dependent.
Standard Preset Gains - If standard, preset gains are
desired, set the Auto Tune Configuration Switch to Off.
After performing a Quick-Cal, use the Selectable GAIN
switch to the desired level
(“B” – “J”). The standard, preset
gain settings are not affected by Quick-Cal.
It may be necessary to set the gain switch BEFORE the
Quick Cal. Very fast stroking valves may need to be at
lower gains and very slow stroking valves may need to be
at higher gains.
Custom Manual Gains - To set gains manually, set the
selectable GAIN switch to “A”. Changing the switch from
“B” to “A” will write the standard “B” settings into the “A”
parameters, allowing a starting point for modification.
Similarly, changing the switch from “J” to “A” will write the
standard “J” settings into the “A” parameters. Custom
tuning values can then be entered using the Display Menu,
a Handheld or ValveSight
®
DTM. With the Selectable
GAIN Switch set to “A”, the tuning will not be modified
during a Quick-Cal.
21.4.3 Aborting a Quick-Cal
The Quick-Cal can be aborted at any time by briefly
pressing the
◄ BACK button. In this case, the previous
settings will be retained.
21.4.4 On Line Stroke Calibration Adjustments
At times an adjustment to the calibration is desired, but the
process cannot be interrupted. The stroke calibration can
be adjusted with minimal valve movement. Contact your
local Field Service Technician for more information.
21.5 Analog Output (AO) Calibration
The Analog Output (position feedback) function of the
Multi-Function Card can be configured calibrated using the
DTM or LCD. Ensure the card is installed, the positioner
recognizes the card, and it is configured to be an AO.
The DTM AO calibration wizard is found here:
Configuration / Card Slot 1 (or 2) / Multi-Function Card /
Analog Output Calibration.
22
POSITIONER FUNCTIONS
The following features can be performed using the local
interface. Additional features are offered with the use of a
Handheld or DTM.
NOTE:
In order to prevent unintentional adjustments of
the configuration, tuning, or control of the valve, the
Tamper Lock feature may be used. This is set in the DTM
and disables the buttons and menus except for the ability to
view the status of the positioner. The positioner can be
unlocked from the DTM.
22.1 Live Manual Tuning (Adjusting the
Gain)
Use the Selectable GAIN Switch to adjust the gain at any
time during operation. This adjustment takes effect
immediately.
For faster response select settings above “E”
(F-J). For more stable response,
select settings below “E”
(B-D). See
Error! Reference source not found.
.
22.2 Local Control Of Valve Position
To manually adjust the position of the valve regardless of
the input command (analog or digital), press and hold the
▲Up, ▼Down and ◄ BACK buttons for about 3 seconds.
The ▲Up, ▼down buttons can then be used to position the
valve. While in this mode the LED‘s will flash a GRRY
(green-red-red-yellow) sequence. To exit the local control
mode and return to normal
operation, briefly press the ►
ACCEPT/QUICK-CAL button.
CAUTION:
When operating using local control of the
valve, the valve will not respond to external commands.
Notify proper personnel that the valve will not respond to
remote command changes, and make sure the valve is
properly isolated.
22.3 Command Source Reset
Performing a command source reset will reset the
command source to analog if it has been inadvertently left
in digital mode. This is done while holding down both the
▲Up and ▼Down buttons, and briefly pressing the
►ACCEPT/QUICK-CAL button.
22.4 Factory Reset
