Figure 12 - Magnetic Bearing Controller Details Screen - York YMC2 Operation And Maintenance

FORM 160.84-OM1
ISSUE DATE: 9/21/2017
MAGNETIC BEARING CONTROLLER DETAILS SCREEN

FIGURE 12 - MAGNETIC BEARING CONTROLLER DETAILS SCREEN

OVERVIEW
This screen displays the orientation of the magnetic
bearing axes relative to the compressor driveline simi-
lar to the MBC Screen. Additional pertinent param-
eters transmitted to the control panel from the Mag-
netic Bearing Controller (MBC) are displayed on this
screen. Many parameters are shown in the diagram in
the locations they represent. The left end of the mo-
tor shaft graphic represents the low stage (single stage)
Impeller End Bearing. The right end of the motor shaft
graphic represents the Opposite End Bearing.
DISPLAY ONLY
Z1 Temperature
Displays the temperature measured at the impeller end
bearing assembly.
A13 Unbalance / B13 Unbalance
Magnitude of motion at 1x rotation in each of two vec-
tors at the 1-stage impeller end.
A24 Unbalance / B24 Unbalance
Magnitude of motion at 1x rotation in each of two vec-
tors at the opposite 1-stage impeller end.
JOHNSON CONTROLS
SECTION 3 - OPTIVIEW™ CONTROL CENTER FUNCTIONS AND NAVIGATION
Z2 Temperature
Displays the temperature measured at the opposite im-
peller end bearing assembly.
Z12 Vibration
Displays the vibration amplitude for specific frequen-
cies measured axially by the position sensors.
Magnetic bearing currents as described for the MBC
Screen are repeated on this screen:
• W1 (Current)
• V1 (Current)
• Z1 (Current)
• V3 (Current)
• W3 (Current)
• W2 (Current)
• V2 (Current)
• Z2 (Current)
• V4 (Current)
• W4 (Current)
LD17924a
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