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Magnetic Field Influence
Negligible at 100 A/m (EN61000-4-8)
CE MARK certified to EN50081-2 and EN50082-2
Table 11: Environmental Specifications (Continued)
Table 12: Operational Specifications
Power interruption without reset
<100ms
Accuracy
+/- 0.5% Full Span
Hysteresis and Deadband
+/- 0.3% Full Span
Repeatability
+/- 0.3% 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” - 8“ (6 mm - 203mm)
Note: Above 8” (203 mm) consult factory for mounting
instructions.
Flow Characteristics
Applied in addition to the control valve’s inher-
ent characteristic.
Linear
Equal Percentage (of 50:1 or 30:1)
Camflex Quick Opening (inverse of 50:1 equal percentage)
Customer Configurable
Tight shutoff - Yes (0-20% of Input)
Auto Tune
SVI3 performs automatic determination of the
optimal valve positioner control parameters. In
addition to P, I, D, the position algorithm uses
damping, symmetry for exhaust and fill time
constants, dead zone and magnitude charac-
terization parameters. Auto Tune is optimized
for 5% step changes with negligible over-
shoot. After the Auto Tune process is com-
pleted, you can further adjust the positioner
tuning parameters to more conservative or to
more responsive values.
• Proportional gain: 0 to 4, displayed as 0 to 4000
• 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
• Stroke Rate Limiting: 0 to 250 seconds
• Position compensation coefficient: 1 to 20
• Boost Scale Factor: 0 to 2
• Offset Scale Factor: 0 to 2
Full open position adjustment
60 to 100% of actual stop
Start Up Time (from no power)
Less than 150 ms
Minimum current to maintain HART
®
3.2 mA
