Variable Geometry Diffuser (Vgd) Setpoints Screen; Figure 14 - Variable Geometry Diffuser Setpoints Screen - York OPTIVIEW YD Series Manual

Control center centrifugal liquid chillers
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SECTION 2 – OPTIVIEW CONTROL CENTER

VARIABLE GEOMETRY DIFFUSER (VGD) SETPOINTS SCREEN

FIGURE 14 - VARIABLE GEOMETRY DIFFUSER SETPOINTS SCREEN

The Variable Geometry Diffuser setpoints for VGD 1
and 2 are maintained on this screen. All setpoints re-
quire a login access level of Service unless otherwise
noted.
DISPLAY ONLY
VGD 1
Stall Detector Voltage
Displays the Stall Detector output voltage (x.xxVDC),
as received by the Microboard.
PRV Position
Displays the position of the Pre-Rotation Vanes over
the range of 0% (fully closed) to 100% (fully open).
Displayed as XXX until calibration procedure is per-
formed by Service Technician.
VGD Position
Displays the position of the VGD over the range of 0%
(fully closed) to 100% (fully open). Displayed as XXX
until calibration procedure is performed by Service
Technician.
VGD Opening (LED)
Illuminates when an open signal is being applied to the
VGD.
52
VGD Closing (LED)
Illuminates when a close signal is being applied to the
VGD.
VGD 2
Stall Detector Voltage
Displays the Stall Detector output voltage (x.xxVDC),
as received by the Microboard.
PRV Position
Displays the position of the Pre-rotation vanes over
the range of 0% (fully closed) to 100% (fully open).
Displayed as XXX until calibration procedure is per-
formed by Service Technician.
VGD Position
Displays the position of the VGD over the range of 0%
(fully closed) to 100% (fully open). Displayed as XXX
until calibration procedure is performed by Service
Technician.
VGD Opening (LED)
Illuminates when an open signal is being applied to the
VGD.
VGD Closing (LED)
Illuminates when a close signal is being applied to the
VGD.
FORM 160.79-O3
ISSUE DATE: 11/09/2018
LD27853
JOHNSON CONTROLS

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