Appendices
52
Alarm
Number
Alarm type
Description
were detected
0x80000
Phase angle
The measured phase angle between
corresponding voltage and current channels was
not in the range: 0 <=
<=
/2
0x100000
Current phase fault
The ordering of the current phases was different
to that of the voltage phases or the angle between
two phases was not 120º
0x200000
Data acquisition
fault
Division by zero was attempted during data
acquisition
0x400000
Range error
An illegal value was detected for one or more of
the following quantities during data acquisition:
Calibration constants, balance values, admittance,
estimated physical parameters
0x800000
Frequency range
(CHECK MOTOR and LEARN only). The measured
frequency differed from the nominal value. During
the learning period, AMU learns the motor only at
the dominant frequency. In inverter driven
systems, it is important to set the nominal
frequency to this dominant frequency otherwise,
AMU may never complete the learning period.
This condition is relaxed during normal monitoring
(IMPROVE and UPDATE) where unlearned
frequencies are updated automatically
0x1000000
Frequency tolerance Illegal value for the mean frequency (IMPROVE,
UPDATE and
MONITOR)
0x2000000 Noisy data
The estimated admittance is inconsistent with the
measured RMS values for voltage and current.
This usually indicates excessive noise in the data
Summary of Contents for AMT Toolkit
Page 2: ......
Page 34: ...Equipment Faults Diagnosis and Reporting 32...
Page 70: ...Appendices 68 7 6 2 Running AMU Learn...
Page 71: ...Appendices 69 7 6 3 Running AMU MONITOR IMPROVE UPDATE...
Page 72: ...Appendices 70 7 6 4 Running AMU Alarm conditions...
Page 73: ...Appendices 71...
Page 74: ...Appendices 72...
