Masoneilan SVI II AP Installation and Maintenance ... - GE Energy
Masoneilan SVI II AP Installation and Maintenance ... - GE Energy
Masoneilan SVI II AP Installation and Maintenance ... - GE Energy
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Operational Overview<br />
Introduction<br />
Advanced <strong>and</strong> Online Diagnostics<br />
Contact <strong>Masoneilan</strong><br />
The <strong>SVI</strong> <strong>II</strong> <strong>AP</strong> offers various levels of control valve diagnostics. Up to five pressure<br />
sensors that detect circuit board temperature, loop current, <strong>and</strong> reference voltage, are<br />
available for diagnostics.<br />
For more details on the use of ValVue software, refer to the ValVue User’s Guide.<br />
Contact the factory or your local representative to obtain licensing information.<br />
For the most recent software visit our <strong>SVI</strong> <strong>II</strong> <strong>AP</strong> web site at: www.ge-energy.com.<br />
Operational Overview<br />
The <strong>SVI</strong> <strong>II</strong> <strong>AP</strong> is a smart electro-pneumatic positioner that receives a<br />
4 - 20 mA electrical position setpoint signal from the controller <strong>and</strong> compares the<br />
position setpoint input signal to the valve position feedback sensor. The difference<br />
between the position setpoint <strong>and</strong> position feedback is analyzed by the position control<br />
algorithm that sets a servo signal for the I/P converter. The output pressure of the I/P is<br />
amplified by a pneumatic relay that drives the actuator. Once the error between the<br />
setpoint <strong>and</strong> the valve position feedback is within range, no other correction is applied<br />
to the servo signal in order to maintain valve position.<br />
The local explosion proof LCD/Buttons (if equipped) display provides configuration or<br />
calibration mode in all operating environments. The limit switch⁄transmitter options<br />
board provides contact outputs that are software configurable, <strong>and</strong> an analog (4 - 20<br />
mA) position feedback.<br />
<strong>SVI</strong> <strong>II</strong> <strong>AP</strong> Features<br />
The <strong>SVI</strong> <strong>II</strong> <strong>AP</strong> Digital Valve Positioner (see Figure 1 on page 17) is suitable for<br />
installation indoors or outdoors, <strong>and</strong> in a corrosive industrial or marine environment <strong>and</strong><br />
is equipped with the following features:<br />
Extreme Accuracy<br />
Extreme Reliability<br />
Extreme Digital Precision<br />
Automated Valve Commissioning<br />
Precise, Quick, Responsive Control of Valve Position<br />
Valve Position Autotuning<br />
One Model for Rotary or Reciprocating Valves<br />
Local Operation⁄calibration⁄configuration with Optional Flameproof Push Buttons<br />
<strong>and</strong> LCD Digital Display<br />
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