YASKAWA JUSP-MD D01A Series User Manual page 302

Alarm Number:
Alarm Name
(Alarm Description)
The surrounding air temperature
is too high.
The overload alarm has been
reset by turning OFF the power
too many times.
A.7A0:
Heat Sink Overheated
Excessive load or operation
(Detected when the
beyond the regenerative energy
SERVOPACK's heat
processing capacity.
sink temperature
exceeds 100°C.)
Incorrect installation orientation
of the SERVOPACK or/and
insufficient space around the
SERVOPACK.
A fault occurred in the SERVO-
PACK.
A.7AB:
Built-in Fan in The fan inside the SERVOPACK
SERVOPACK stopped.
Stopped
Alarm occurred when the control
power supply to the absolute
encoder was turned ON for the
first time.
The encoder cable disconnected,
and connected again.
A.810:
Encoder Backup Error
The power from both the control
power supply (+5 V) from the
(Only when an absolute
multi-winding drive unit and the
encoder is connected.)
battery power supply is not being
(Detected on the encoder
supplied.
side.)
An absolute encoder fault
occurred.
A fault occurred in the multi-
winding drive unit.
A.820:
An encoder fault occurred.
Encoder Checksum
Error
(Detected on the encoder
side.)
A fault occurred in the multi-
winding drive unit.
Cause Investigative Actions
Check the surrounding air tempera-
ture using a thermostat.
Check the alarm history display
(Fn000) to see if the overload alarm
was reported.
Check the accumulated load ratio
(Un009) to see the load during oper-
ation, and the regenerative load
ratio (Un00A) to see the regenera-
tive energy processing capacity.
Check the installation conditions of
the SERVOPACK.
−
Check for foreign matter or debris
inside the SERVOPACK.
Check to see if the control power
supply was turned ON for the first
time.
Check to see if the control power
supply was turned ON for the first
time.
Check the encoder connector bat-
tery or the connector contact status.
−
−
−
−
9.1 Alarm Displays
(cont'd)
Corrective Actions
Decrease the surrounding air tem-
perature by improving the installa-
tion conditions of the SERVOPACK.
Change the method for resetting the
alarm.
Reconsider the load and operating
conditions.
Install the SERVOPACK correctly
as specified.
The SERVOPACK may be faulty.
Replace the SERVOPACK.
Remove foreign matter or debris
from the SERVOPACK. If the
alarm still occurs, the SERVO-
PACK may be faulty. Replace the
SERVOPACK.
Set up the encoder (Fn008).
Confirm the connection and set up
the encoder (Fn008).
Replace the battery or take similar
measures to supply power to the
encoder, and set up the encoder
(Fn008).
If the alarm cannot be reset by set-
ting up the encoder again, replace
the servomotor.
The multi-winding drive unit may
be faulty. Replace the multi-wind-
ing drive unit.
• Absolute encoder
Set up the encoder again using
Fn008. If the alarm still occurs,
the servomotor may be faulty.
Replace the servomotor.
• Absolute encoder that shows val-
ues for a single rotation or incre-
mental encoder
The servomotor may be faulty.
Replace the servomotor.
The multi-winding drive unit may
be faulty. Replace the multi-wind-
ing drive unit.
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