Johnson Controls YORK YVAM 0350, Operation & Maintenance Manual

Page: 42 / 162

Magnetic bearing controller screen
Figure 17: Magnetic bearing controller screen
This screen displays the orientation of the magnetic bearing axes relative to the compressor
driveline. Pertinent parameters transmitted to the control panel from the Magnetic 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 motor shaft graphic represents the low stage (single
stage) impeller end bearing. The right end of the motor shaft graphic represents the opposite end
bearing.
Table 22: Display only fields
Field/LED name Description
V13 Position Displays the shaft position in micrometers from center along the radial axis designated “V”
for the Impeller End Bearing.
W13 Position Displays the shaft position in micrometers from center along the radial axis designated “W”
for the Impeller End Bearing.
W1 (Current) Displays the magnetizing current to the upper bearing on the radial axis designated “W” for
the Impeller End.
W3 (Current) Displays the magnetizing current to the lower bearing on the radial axis designated “W” for
the Impeller End.
V1 (Current) Displays the magnetizing current to the upper bearing on the radial axis designated “V” for
the Impeller End.
V3 (Current) Displays the magnetizing current to the lower bearing on the radial axis designated “V” for
the Impeller End.
Z1 (Current) Displays the magnetizing current to the axial bearing at the Impeller End.
V24 Position Displays the shaft position in micrometers from center along the radial axis designated “V”
for the Opposite Impeller End Bearing.
W24 Position Displays the shaft position in micrometers from center along the radial axis designated “W”
for the Opposite Impeller End Bearing.
W2 (Current) Displays the magnetizing current to the upper bearing on the radial axis designated “W” for
the Opposite Impeller End.
W4 (Current) Displays the magnetizing current to the lower bearing on the radial axis designated “W” for
the Opposite Impeller End.
V2 (Current) Displays the magnetizing current to the upper bearing on the radial axis designated “V” for
the Opposite Impeller End.
YVAM Control Center 42