York YZ MODEL A - FIGURE 13 - Magnetic Bearing Controller (MBC) Screen

JOHNSON CONTROLS
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SECTION 3 - OPTIVIEW™ CONTROL CENTER FUNCTIONS AND NAVIGATION
FORM 161.01-OM1
ISSUE DATE: 6/8/2018
3
FIGURE 13 - MAGNETIC BEARING CONTROLLER (MBC) SCREEN
LD26735
DISPLAY ONLY FIELDS
DISPLAY ONLY FIELDS
FIELD/LED NAME DESCRIPTION
MBC Motor Speed Indicates the compressor motor rotational speed.
MBC Levitated Contact LED
Illuminates when the Levitated Contact switch closes to provide a proof of levita-
tion to the controller.
MBC Levitated LED Illuminates when the MBC is levitating the shaft.
MBC Fault LED Illuminates when an MBC Fault is active.
MBC Config Status Displays what conguration the MBC has been initialized for.
MBC Heatsink Temperature Displays the MBC Heatsink Temperature in °F or °C.
J Bearing Temperature Displays the J Bearing Temperature in °F or °C.
K Bearing Temperature Displays the K Bearing Temperature in °F or °C.
H1 Bearing Temperature Displays the H1 Thrust Bearing Temperature in °F or °C.
H2 Bearing Temperature Displays the H2 Thrust Bearing Temperature in °F or °C.
Avg Pos
Displays a running 1 second average position of the Radial Bearing J in the
X and Y axis. H Thrust Bearing and the Radial Bearing K in the X and Y axis
expressed in Mils.
Sync Orbit
Displays the synchronous orbit of the radial bearing J in the X and Y axis, Thrust
Bearing H and the Radial Bearing K in the X and Y axis expressed in Mils
This screen displays the orientation of the magnetic
bearing axes relative to the compressor driveline. Per-
tinent parameters transmitted to the control panel from
the Magnetic Bearing Controller (MBC) are displayed
on this screen. Many parameters are shown in the dia-
gram in the locations they represent. The left end of the
motor shaft graphic represents the low stage Impeller
End Bearing. The right end of the motor shaft graphic
represents the Opposite End Bearing.