Relationship Between Alarm Display And Alarm Code Output - YASKAWA SGM series User Manual

4) Relationship between Alarm Display and Alarm Code Output

Alarm Display and Alarm Code Output:
Alarm Code Output
Alarm Alarm
Display
ALO1 ALO2 ALO3
¢
○
○
¢
○
○
○
¢
¢
¢
○ : Output transistor is ON
¢ : Output transistor is OFF
* : Displays an alarm category number.
For details, refer to Appendix E List of Alarm Displays.
Servo
Alarm
(ALM) (ALM)
Alarm Type Alarm Type
Out-
put
User
constant
¢ ¢ ¢
error
Overcurrent Overcurrent flowed thorough
¢ ¢ ¢
Position
error pulse
○ ¢ ¢
overflow
Overvoltage Main circuit DC voltage has
¢ ¢
○
Overspeed
¢ ¢
○
Overload
○ ○ ¢
Overrun
Disconnec-
tion of PG
¢ ○ ¢
signal line
Absolute
encoder er-
¢ ¢ ¢
ror
Power loss
alarm
¢ ¢
○
Digital
Operator
transmis- transmis-
Undefined Undefined
sion error
No error
¢ ¢ ○
3.7 Forming a Protective Sequence
Alarm Description Alarm Description
An absolute encoder error oc-
curred or user constant is
faulty.
the main circuit.
Servopack overheated.
The number of pulses in error
counter has exceeded the
preset value.
exceeded approximately
420 V.
Motor speed has exceeded
the maximum allowable
speed.
Motor and Servopack are
overloaded.
Overrun occurred due to mo-
tor or encoder signal wiring
faults.
Encoder signal line is discon-
nected.
Absolute encoder is faulty.
After power was turned OFF,
power was turned ON again
within power holding time.
Power loss occurred during
operation.
Communication error oc-
curred between Digital Opera-
tor and Servopack. tor and Servopack.
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