Flowserve Logix 3200IQ - Page 7

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Logix 3200IQ Digital Positioner FCD LGENTB0058-03 – 01/11
flowserve.com
Signatures
The Logix 3200IQ positioner is designed to assure that data is easily
gathered, stored and compared to historical valve data so the user
can determine the performance of critical valves.
With SoftTools software a user-defined signature ramp (Figure 2) or
step response test can be generated with a Logix 3200IQ positioner.
Signatures can be saved and cataloged (and later retrieved) for
comparison (Figure 3) with a more recent signature.
SoftTools software allows a user to easily overlay valve signatures
and compare current performance with past performance over
a particular time period. This allows the user to determine if
degradation has occurred over time on critical valves. It also allows
the user to compare historical data and determine if a valve needs
to be pulled for maintenance. User-defined steps (large or small)
can be tested and stored—large steps for speed and small steps for
resolution and precision. Internal sensors allow the user to test the
response and health of the valve at any time.
Positioner Performance
Static performance and accuracy measures such as hysteresis,
deadband, linearity, and repeatability can be obtained with the Logix
3200IQ positioner. These values can be graphically depicted, stored
and later retrieved for comparative analysis (Figure 4).
Third Party Configuration Devices
While no handheld device or software is required to commission
and calibrate the Logix IQ, a Fisher-Rosemount
®
HART 275/375
can also be used to perform configurations and calibration. The
Logix IQ is “AMS
™
Aware”, and has complete configuration, alarm
and calibration functionality with this software platform. Unique in
the AMS
™
Suite of HART instrumentation is the ease of calibration
of the Logix IQ. Since the Logix IQ self-calibrates, there is no need
for a calibration “wizard” or a script to guide the user through
this operation. AMS simply initiates the QUICK-CAL on the Logix
IQ, then awaits confirmation from the Logix IQ that calibration is
complete. Most positioners on the market today require a script or
“wizard” that resides on a handheld device or PC-based software
to perform a calibration because their on-board microprocessors
require it.
SoftTools, Signatures and Performance Testing
Figure 2 – Ramp Open Test
Figure 3 – Signature Comparison
Figure 4 – Performance Test