Table of Contents
Advertisement
Accuracy
Hysteresis and Deadband
Repeatability
Conformity
Start-Up Drift
Long Term Drift
Position Travel Limits
Flow Characteristics
Applied in addition to the control valve's
inherent characteristic.
Tight Shut Off
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.
Stroking Time
Full open position adjustment
Start Up Time (from no power)
66 | =BHGE
Table 8: Operational Specifications
© 2019 Baker Hughes, a GE company, LLC. All rights reserved.
+/- 1.0% (typical or less) Full Span
+/- 0.3% Full Span
+/- 0.3% Full Span
+/- 0.5% Full Span
Less than 0.02% in first hour
Less than 0.003% per month
Rotary: 18 - 140°
Reciprocating: 0.25" - 2.5" (6 mm - 64
mm)
Note: Above 2.5" (64 mm) consult factory for
mounting instructions.
Linear
Equal Percentage (of 50:1 or 30:1)
Camflex
Quick Opening (inverse of 50:1 equal
percentage)
User Configurable
0 -20% of input
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
0 to 250 seconds
60 to 100% of actual travel
Less than 500 ms
Advertisement
Table of Contents
