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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)
Minimum current to maintain HART
®
HART
Command#3 Mapping
Power Supply
Compliance Voltage Rating
Minimum Current Signal to Start Up
Minimum Input Span for Split Range
Operation
Upper Range Value for Split Range
Operation
Lower Range Value for Split Range
Operation
Wire Size
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Table 7: Operational Specifications (Continued)
®
Table 8: Input Signal and Power, Specifications
Proportional gain: 0 to 5000
Integral time: 0 to 100 seconds - displayed as
0 to 1000 (1/10s)
Derivative time: 0 to 200 ms
Dead Zone: 0 to +/-5% (0 to 10% deadband)
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
3.4 mA
®
HART
4-20 mA input signal
PV= Valve Position, 0-100%
SV = Actuator Pressure, configured eng. units
TV = Reserved
QV = Reserved
Loop powered from 4-20 mA control signal
9.0 V at 20 mA, 11.0 V at 4.0 mA
3.2 mA
5 mA
8 mA to 20 mA
4 mA to 14 mA
12/28 AWG
.
Masoneilan SVi1000 Positioner Quick Start Guide =| 67
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