GE BAKER HUGHES Masoneilan SVi 1000, Quick Start Manual

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Table 8: Operational Specifications
Accuracy +/- 1.0% (typical or less) Full Span
Hysteresis and Deadband +/- 0.3% Full Span
Repeatability +/- 0.3% Full Span
Conformity +/- 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” - 2.5“ (6 mm - 64
mm)
Note: Above 2.5” (64 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
SVi1000 performs automatic determination
of the optimal valve position control param-
eters. In addition to P, I, D, the position algo-
rithm uses damping, symmetry for exhaust
and fill time constants, dead zone and mag-
nitude characterization parameters. Auto
Tune is optimized for 5% step changes with
negligible overshoot. After the Auto Tune
process is completed, the user can further
adjust the positioner tuning parameters to
more conservative or to more responsive
values.
Proportional gain: 0 to 5000
Integral time: 0 to 100 seconds - dis-
played as 0 to 1000 (1/10s)
Derivative time: 0 to 200 ms
Dead Zone: 0 to +/-5% (0 to 10% dead-
band)
Padj: +/- 3000 (depends on P)
Beta (non-linear gain factor): -9 to +9
Position compensation coefficient: 1 to
20
Boost: 0 to 20
Stroking Time 0 to 250 seconds
Full open position adjustment 60 to 100% of actual travel
Start Up Time (from no power) Less than 500 ms