Mitsubishi Electric MELDAS 60 Series, Parameter Manual

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1. List of Alarms
1.3 Servo spindle Alarms
I - 17
Alarm No. Name Meaning
40 Detector selection
unit switching error An error was detected in the motor switching signals that were
received from the detector selection unit, while controlling one drive
unit and two motors.
41 Detector selection
unit communication
error An error was detected in the communication with the detector
selection unit, while controlling one drive unit and two motors.
42
Feedback error 1 An error was detected in the feedback signals of the pulse motor end
detector in a servo system, or in PLG's feedback signals in a spindle
system.
43 Feedback error 2 Excessive difference was detected in position data between the
motor end detector and the machine end detector in a servo system.
In a spindle system, an error was detected in the encoder feedback
signals.
44 Inappropriate coil
selected for C axis When using a coil changeover motor, C-axis was controlled while the
high-speed coil was selected.
45
Fan stop A cooling fan built in the drive unit stopped, and the loads on the unit
exceeded the specified value.
46 Motor overheat Thermal protection function of the motor or in the detector, has
started its operation.
47
Regenerative
resistor overheat Thermal protection function of the regenerative resistor, has started
its operation.
48 Motor side detector:
CPU error 2 A CPU error was detected in the linear scale of a linear servo
system.
49
Motor side detector:
Overspeed The specified max. speed was detected in the linear scale of the
linear servo system.
4A Motor side detector:
Absolute position
data error An error was detected in the absolute position detection circuit in the
linear scale of a linear servo system.
4B
Motor side detector:
Relative position
data error An error was detected in the relative position detection circuit in the
linear scale of a linear servo system.
4C Current error at
magnetic pole
detection A current error was detected in the IPM spindle motor when the
initial magnetic pole was being formed.
4E NC command mode
error The mode outside the specification was input in spindle control mode
selection.
4F
Instantaneous
power interruption The power was momentarily interrupted.
50 Overload 1 Overload detection level became over 100%. The motor or the drive
unit is overloaded.
51 Overload 2 Current command of more than 95% of the unit's max. current was
being continuously given for longer than 1 second in a servo system.
In a spindle system, the load over the continuous rating was being
applied for longer than 30 minutes.
52
Excessive error 1 A difference between the actual and theoretical motor positions
during servo ON exceeded the setting value in a servo system. In a
spindle system, a difference between the position command and
position feedback exceeded the setting value.