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YORK INTERNATIONAL
38
FORM 160.55-O1 (604)
VSD TUNING SCREEN
OVERVIEW
This screen displays a cutaway view of the chiller com-
pres sor, revealing the pre-rotation vanes and pro vides
the capability of manually controlling the pre-rotation
vanes. Animation of the pre-rotation vanes indicates
the pre-rotation vane position. In addition, this screen
al lows manual control of the fre quen cy com mand be ing
sent to the Variable Speed Drive.
Re quires a login access level of
SERVICE. Service Technicians re fer
to YORK Service Manual 160.55-M1
for operation instructions and ex pla -
na tion of all programmable setpoints
and displayed values.
DISPLAY ONLY
Output Frequency
Displays the Output Frequency reported by the Vari able
Speed Drive.
Temperature Differential
Displays the differential between the Leaving Chilled
Liquid Temperature and Setpoint.
Delta P/P
Displays a value based on the pressure differential
be tween the Evaporator and Condenser pressures.
[(Condenser – Evaporator) / Evaporator]
Pre-Rotation Vanes Control Mode
Indicates whether the vanes are under manual or au to -
mat ic control.
[Pre-Rotation Vanes] Open (LED)
Indicates whether the vanes are in the process of
opening.
[Pre-Rotation Vanes] Close (LED)
Indicates whether the vanes are in the process of
closing.
Pre-Rotation Vane Position
This value displays the present position of the pre-ro-
ta tion vanes as a percentage between 0 and 100%.
[VSD] Command Frequency
Displays the frequency value being sent to the Adap tive
Capacity Control.
[VSD] Frequency Control Mode (Manual / Auto)
Displays the present state of the command frequency
control.
00477VIP
FIG. 14
OptiView Control Center