1. LIST OF ALARMS
1.3 Servo Alarms
I - 19
Alarm No. Name Meaning
73
Over regeneration Over-regeneration detection level became over 100%. The
regenerative resistor is overloaded.
74
Regenerative
resistor overheat
Thermal protection function of the regenerative resistor, has started
its operation.
75
Overvoltage PN bus voltage in main circuit exceeded the allowable value.
76
External emergency
stop setting error
As for the external emergency stop settings, the setting on the rotary
switch and the parameter setting are mismatched.
77
Power module
overheat
Thermal protection function in the power module has started its
operation.
7F
Drive unit power
supply restart
request
A mismatch of program mode selection was detected. Turn the drive
unit power ON again.
80
Detector converting
unit 1: Connection
error
A connection error was detected between the analog output linear
scale and the unit MDS-B-HR that is used in a linear servo system.
81
Detector converting
unit 1:
Communication
error
A communication error was detected between the serial output linear
scale and the unit MDS-B-HR that is used in a linear servo system.
83
Detector converting
unit 1: Judgment
error
Judgment of the linear scale analog frequency failed in the unit
MDS-B-HR that is used in a linear servo system.
84
Detector converting
unit 1: CPU error
A CPU error was detected in the unit MDS-B-HR that is used in a
linear servo system.
85
Detector converting
unit 1: Data error
A data error was detected in the unit MDS-B-HR that is used in a
linear servo system.
86
Detector converting
unit 1: Magnetic pole
error
An error was detected in the magnetic pole of the unit MDS-B-HR
that is used in a linear servo system.
88
Watchdog The system does not operate correctly.
89
Detector converting
unit 2: Connection
error
A connection error was detected between the analog output linear
scale and the unit MDS-B-HR in a servo system. In a spindle
system, the initial communication with MDS-B-PJEX failed.
8A
Detector converting
unit 2:
Communication
error
An error was detected in the communication with the serial output
linear scale of the unit MDS-B-HR in a servo system. In a spindle
system, an error was detected in the communication with
MDS-B-PJEX.
8B
Detector converting
unit 2: Automatic
tuning error
An abnormal signal was detected from PLG in automatic PLG tuning.
8C
Detector converting
unit 2: Judgment
error
The detector type outside the specification was designated in
MDS-B-PJEX.
8D
Detector converting
unit 2: CPU error
A CPU error was detected in the unit MDS-B-HR in a servo system,
or in the unit MDS-B-PJEX in a spindle system.
8E
Detector converting
unit 2: Data error
A data error was detected in the unit MDS-B-HR.
