Flowserve 3400IQ - Manual (Page 13)

Logix 3400IQ Digital Positioner FCD LGENIM3403-00 – 11/07
L
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on of the Logix 3400IQ digital positioner is done almost exclusively in the transducer block
w.
the
be viewed or modified. Check the Periodic Update box to
rizes basic configuration of a Logix 3400IQ digital positioner on a 25 square-inch
Table 1: Q Digital P ters
ogix 3400IQ Digital Positioner Configuration
onfigurati C
(FVPTB).
pen the transducer block (FVPTB) window by double-clicking its tag in the main NI Configurator windo O
The FVPTB MODE_BLK: TARGET parameter must be set to OOS in order to do any configuration.
Due to the large number of parameters in the FVPTB configuration is easiest under the Custom tab. Use
ustom Config button to select parameters to C
ensure that the data being viewed is current.
he following table summa T
actuator and linear valve.
Logix 3400I ositioner Parame
Parameter
Default
Value Function
MODE_BLK:TARGET OOS Determines the mode of the function block
FINAL_VALUE No default positioner before characterization, Command going to
soft stops or MPC.
FINAL_VALUE_CUTOFF_HI 110% This will saturate the actuator in an open position if
FINAL_VALUE becomes greater than the cutoff value.
FINAL_VALUE_CUTOFF_LO 1%
r. The new
This will saturate the actuator in a close position if
FINAL_VALUE becomes less than the cutoff value.
This is the same has the Minimum Position Cutoff
feature of the Logix 1200 digital positione
terminology matches FF terminology
FINAL_POSITION_VALUE Dynamic Actual stem position in percent of stroke
FINAL_VALUE_RANGE to -
10% e
d to display the final value.
110% The high and low range limit values, the engineering
units code and the number of digits to the right of th
decimal point to be use
DAC_PERCENT Dynamic DAC output in percent
CONTROL_FLAGS
dip switch
Used to tell positioner type of actuator and
characterization to use. Note: Must match
settings.
GAIN_UPPER 2 Maximum proportional gain used.
GAIN_LOWER 1 Minimum proportional gain used.
GAIN_MULT 0.05 change between GAIN_UPPER and
.
Adjust the rate of
GAIN_LOWER
IGAIN 10 Integral gain.
IL_OFFSET 30-70% null position DAC value to hold spool in a
SOFTSTOP_HIGH 110% Software upper stroke limit
SOFTSTOP_LOW -10% Software lower stroke limit
PRESS_UNITS expressed in. Psi Units pressure sensors reading are
TEMP_UNITS Deg F Units temperature is expressed in.
To set the FVPTB in OOS mode, double-click on MODE_BLK: TARGET, in the pop up box check the OOS
box. Click the Write button. With the block mode is set to OOS (MODE_BLK: ACTUAL = OOS), editing
arameters is now permitted. To change or edit a parameter, double-click on the va
the
lue, and make the
hanges in the Edit box. Remember to click the Write button to apply the change.
p
c
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