Yaskawa Sigma Mini - Manual (Page 105)

2.7Designing a Protective Sequence
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The following table provides details of the alarm displays.
Alarm Display and Alarm Code Output
Alarm
Servo
Alarm
Alarm Type Alarm Description
Alarm
Display
Alarm
(ALM)
Output
Alarm Type Alarm Description
OFF
Parameter
error
An absolute encoder error occurred or parameter is
faulty.
OFF
Overcurrent Overcurrent flowed thorough the main circuit.
Servopack overheated.
OFF
Position
error pulse
overflow
The number of pulses in error counter has exceeded
the preset value.
OFF
Overspeed Motor speed has exceeded the maximum allowable
speed.
OFF
Overload Motor and Servopack are overloaded.
OFF
Encoder
error
An error occurred in the number of feedback pulses
from the Encoder.
OFF
Overrun
Disconnec-
tion of en-
coder signal
line
Overrun occurred due to motor or encoder signal
wiring faults.
Encoder signal line is disconnected.
Unde-
Digital
Operator
transmis-
Communication error occurred between Digital Oper-
ator and Servopack.
Unde-
fined
transmis-
sion error
ON
No error ---
ON:Output transistor is ON
OFF: Output transistor is OFF
* : Displays an alarm category number.
For details, refer to Appendix D List of Alarm Displays.
When the servo alarm (ALM) is output, eliminate the cause of the alarm and set the following
/ALMRST input signal at high level (+24 V) to reset the alarm state.
→ Input /ALMRST CN1-*1
Alarm Reset For Speed/Torque
Control and
Position Control
This signal is used to reset the servo alarm state.
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