7.5 Alarm Detection Capabilities
77
Power Supply Unit
INSTRUCTION MANUAL
7
Table 7-7 Table of Warnings
Alarm
Code
LCD Display Causes Protective Action
81 81=MB:SELFCHECK X1
Results of magnetic bearing
sensor self-diagnostics are
abnormal.
Operation is possible
(detected during power
supply self-diagnostics).
82 82=MB:SELFCHECK Y1
83 83=MB:SELFCHECK X2
84 84=MB:SELFCHECK Y2
85 85=MB:SELFCHECK Z
86 86=MB:VIB. WARN. X1
Vibrations of the magnetic
bearing become temporarily
excessive.
Operation continued.
87 87=MB:VIB. WARN. Y1
88 88=MB:VIB. WARN. X2
89 89=MB:VIB. WARN. Y2
90 90=MB:VIB. WARN. Z
91 91=MB:BAL. WARN. AXIS1 Rotor is slightly out of balance.
92 92=MB:BAL. WARN. AXIS2
94 94=MB:AIR RASH B Atmospheric penetration.
99 99=MAINTENANCE TIME
Maintenance call timer reaches
its set time.
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