GE Baker Hughes Masoneilan SVI FF, Installation And Operation Manual

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* Specifications are subject to change without notice
Table 11 Operational Specifications*
Accuracy
±
0.5% (typical
±
0. 10% or less) Full Span
Hysteresis and Deadband
±
0.3% Full Span
Repeatability
±
0.3% Full Span
Conformity/Linearity
±
0.5% Full Span
Start-Up Drift Less than 0.02% in first hour
Long Term Drift Less than 0.003% per month
Position Travel Limits Rotary: 18 - 140°
Reciprocating: 0.25” - 4“(6 mm - 100 mm); Extended mounting: > 4"
(100 mm)
Note
: Above 4” (100 mm) consult factory for mounting
instructions.
Flow Characteristics
Applied in addition to the control valve’s inherent
characteristic. Linear
Equal Percentage (of 50:1 or 30:1)
Camflex
Quick Opening (inverse of 50:1 equal percentage)
User Configurable
Tight Shut Off (0 -20% of input)
Position Auto Tune
SVI FF performs automatic determination of the opti-
mal valve position control parameters. In addition to P,
I, D, the position algorithm uses damping, symmetry
for exhaust and fill time constants, dead zone and
magnitude characterization parameters. Auto Tune is
optimized for 5% step changes with negligible over-
shoot. After the Auto Tune process is completed, you
can further adjust the positioner tuning parameters to
more conservative or to more responsive values. Proportional gain: 0 to 5, displayed as 0 to 5000
Integral time: 0 to 100 seconds - displayed as 0 to 1000 (1/10s)
Derivative time: 0 to 200 milliseconds
Dead Zone: 0 to
±
5% (0 to 10% deadband)
Padj:
±
3000 (depends on P)
Beta (non-linear gain factor): -9 to +9
Stroking Time: 0 to 250 seconds
Position compensation coefficient: 1 to 20
Boost: 0 to 20