Johnson Controls YORK YK MaxE, Operation Manual

Page: 54 / 184

JOHNSON CONTROLS
54
FORM 160.54-O1
optiView Control Center
fig. 12a
VariaBLe geoMetrY diffUser sCreeN
LD10704
oVerVieW
(This feature applies to Software version
C.MLM.01.10.xxx (and later) or C.OPT.01.10.302
(and later))
This screen displays information pertinent to the VGD
operation. Also, the VGD can be manually controlled
from this screen.
dispLaY oNLY
Stall Detector Voltage
Displays the Stall Detector output voltage (x.xxVdc),
as received by the Microboard.
Pre-rotation Vanes Position
Displays the position of the Pre-rotation vanes over the
range of 0% (fully closed) to 100% (fully open). Dis-
played as XXX until calibration procedure is performed
by Service Technician.
VgD Limit Switch
(Software version C.MLM.01.14.xxx (and later) or
C.OPT.01.14.306 (and later))
Displays the status of the VGD Limit Switch. Displayed
as “Closed” when the switch is closed. This would be
when the VGD is in the fully closed position. Otherwise,
displayed as “Open”
Diffuser gap Close (LED)
Illuminates when a close signal is being applied to the
VGD.
Diffuser gap Open (LED)
Illuminates when an open signal is being applied to the
VGD.
Surge Detected (LED)
Illuminates for 5 seconds each time a surge is de-
tected.
VgD Count
Displays the number of times the Stall Detector Board
output voltage goes above the High Limit setpoint. The
count can be cleared with in ADMIN access level us-
ing the VGD Cycle Count key on the VGD Setpoints
Screen.
VgD Time
( __Days __Hrs __Min __Sec)
Displays the accumulated time the Stall Detector Board
output voltage is greater than the High Limit Setpoint
while the chiller is running.
Control Status
Displays the current state of the VGD control. The states
are: Stall Waiting, Stall Reacting, Probing, Surge React-
ing, Surge Waiting, Hot Gas Override.