Masoneilan SVI II AP Installation and Maintenance Manual =| 71© 2017 Baker Hughes, a GE company, LLC. All rights reserved.The GE DPI620 is approved for Intrinsically Safe use in Hazardous Areas in accordance withSVI II AP approvals. See “HART® Communications with Intrinsic Safety” on page 123 and“Wiring an SVI II AP” on page 105 for additional information concerning this device.ValVueValVue combines the power of the PC with the features of the SVI II AP for ease of use andautomation of positioner operation and full access to all data. ValVue is downloaded from thewebsite (https://www.geoilandgas.com/file-download-search) and is recommended for set up,service and maintenance where a PC or laptop is permitted. See “Configuring and Calibratingwith ValVue” on page 103 for further information.Pushbuttons and Local DisplayThis section covers the optional local interface consisting of the LCD alphanumeric displayand pushbuttons. Operation of the SVI II AP Digital Valve Positioner as a local device iscontrolled through the optional device-mounted pushbuttons and digital display, shown inFigure 33 on page 72. Using the display you can read the input signal, valve position, andactuator pressure. The display sequences from one variable to the next every 1.5 seconds.Using the pushbuttons you can exit from operating mode at any time and step through amenu structure to perform a wide range of manual operation, calibration, configuration, andmonitoring functions that are described later in this section. ValVue is used to perform alldiagnostics functions. The pushbuttons do not support diagnostics functions.The SVI II AP has two operational modes: Normal (normal operating mode) and Manual(manual operating mode) and two setup modes, Configuration and Calibration. The SVI II APalso has two modes for handling of faults and power-up: Reset and Failsafe. Whencommissioning or checking a control valve with SVI II AP fully installed the following steps arerecommended:1. Change mode to Manual mode.2. Examine and adjust all Configuration items.3. Enter Calibration mode.4. Run Stops to automatically calibrate stroke.5. Run Auto Tune to set dynamic response.6. Examine the device status.7. Introduce manual set point changes to verify dynamic performance.
