York YST Operation Manual page 32

SECTION 2 - OPTIVIEW CONTROL CENTER INTRODUCTION
high Speed Thrust bearing proximity
differential
Displays the distance between the high-speed thrust
collar and the tip of the proximity probe. This mea-
surement takes into account the reference position es-
tablished at the time of compressor manufacture. This
is only displayed when the "Compressor Thrust Probe"
is set for "Position" on the Operations Screen.
high Speed Thrust Solenoid
(led - Style e-r22 only)
Indicates whether the solenoid is presently energized.
vane Motor Switch (led)
Indicates whether the vanes are completely closed.
oil return Solenoid (led)
Indicates whether the solenoid is presently energized.
The liquid injection solenoid (if supplied) is also ener-
gized when this LED is on.
vent line Solenoid (led - Style e-r22)
Indicates whether the solenoid is presently energized.
pre-rotation vanes position
This value displays the present position of the pre-rota-
tion vanes as a percentage between 0 and 100%.
hot gas bypass valve position
This value displays the present position control signal
sent to the analog output controlling the hot gas by-
pass valve.
oil pump drive Command frequency
(variable Speed oil pump only)
The value displays the present frequency at which the
oil pump is being commanded to run.
oil Cooling valve (led)
Illuminates when the digital output controlling the so-
lenoid valve or electric actuator in the compressor oil
cooler liquid inlet line is energized to allow cooling
liquid into the cooler.
horizontal vibration
Displays the movement of the Compressor Casing. It
is measured by an Accelerometer installed at approxi-
mately 45º from the vertical center on the right side
of the Rotor Support when facing the shaft end of the
32
Compressor. The Accelerometer signal is converted to
a 4-20 mA signal by a Transmitter in the Turbine Box
and connected to the Frick Analog I/O Board in the
Control Center. This text and data field only appear if
MSSP18-Compressor Vibration Sensors is set for En-
abled on Configuration Screen 1.
vertical vibration
Displays the movement of the Compressor Casing. It
is measured by an Accelerometer installed at approxi-
mately 45º from the vertical center on the left side of
the Rotor Support when facing the shaft end of the
Compressor. The Accelerometer signal is converted to
a 4-20 mA signal by a Transmitter in the Turbine Box
and connected to the Frick Analog I/O Board in the
Control Center. This text and data field only appear if
MSSP18-Compressor Vibration Sensors is set for En-
abled on Configuration Screen 1.
high Speed Thrust bearing limit Switch
(led)
Displays the present postion of the High Speed Thrust
Bearing Limit Switch. Extinguished when closed. This
is the normal position This is only displayed when the
"Compressor Thrust Probe" is set for"Switch" on the
Operations Screen.
prograMMable
Fault Acknowledge
Access Level Required: SERVICE
This key allows clearing of the High Speed Thrust
Bearing Limit Switch safety shutdown.
navigaTion
home
Access Level Required: VIEW
Causes an instant return to the Home Screen.
proximity probe Calibration
Access Level Required: SERVICE
Only available if the chiller is stopped. Moves to the
sub-screen allowing calibration of the High Speed
Thrust Bearing Proximity Probe sensor. This key is
only displayed when the "Compressor Thrust Probe" is
set for "Position" on the Operations Screen.
FORM 160.67-O1
ISSUE DATE: 4/1/2015
JOHNSON CONTROLS