© 2017 Baker Hughes, a GE company, LLC. All rights reserved.70 | BHGETable 8 Operational SpecificationsAccuracy +/- 1.0% (typical or less) Full SpanHysteresis and Deadband +/- 0.3% Full SpanRepeatability +/- 0.3% Full SpanConformity +/- 0.5% Full SpanStart-Up Drift Less than 0.02% in first hourLong Term Drift Less than 0.003% per monthPosition 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.Tight Shut Off 0 -20% of inputFlow CharacteristicsApplied in addition to the con-trol valve’s inherentcharacteristic.LinearEqual Percentage (of 50:1 or 30:1)CamflexQuick Opening (inverse of 50:1 equal percentage)User ConfigurablePosition Auto TuneSVi1000 performs automaticdetermination of the optimalvalve position control parame-ters. In addition to P, I, D, theposition algorithm uses damp-ing, symmetry for exhaust andfill time constants, dead zoneand magnitude characterizationparameters. Auto Tune is opti-mized for 5% step changes withnegligible overshoot. After theAuto Tune process is completed,the user can further adjust thepositioner tuning parameters tomore conservative or to moreresponsive values.Proportional gain: 0 to 5000Integral time: 0 to 100 seconds - displayed as 0 to 1000 (1/10s)Derivative time: 0 to 200 msDead Zone: 0 to +/-5% (0 to 10% deadband)Padj: +/- 3000 (depends on P)Beta (non-linear gain factor): -9 to +9Position compensation coefficient: 1 to 20Boost: 0 to 20Stroking Time 0 to 250 secondsFull open position adjustment 60 to 100% of actual travelStart Up Time (from no power) Less than 500 ms
