Yaskawa Junma Series SERVOPACK - Manual (Page 78)

6.1 Alarm Indicator Lights
E-77
English
Overcurr-
ent Power was
turned ON. Phases U, V, and W in the ser-
vomotor are wired to the wrong
terminals. Check and correct the servomo-
tor wiring.
The ground wire is caught on
other terminals.
• A short circuit occurred
between ground and U, V, or
W of the servomotor main
circuit cable.
• A short circuit occurred
between phase U, V, or W of
the servomotor main circuit
cable.
Correct the servomotor circuits
or cable. Replace the servomo-
tor.
Note: Before turning ON the
power supply, make sure
that the circuit is correctly
grounded without a short
circuit.
The Regenerative Unit is wired
incorrectly. Check and correct the wiring.
A short circuit occurred between
ground and U, V, or W of the
SERVOPACK. Replace the SERVOPACK.
• A short circuit occurred
between ground and U, V, or
W of the servomotor.
• A short circuit occurred
between phase U, V, or W of
the servomotor.
Replace the servomotor.
The load is excessive or beyond
the capacity of regeneration
processing. Reconsider and correct the load
and operating conditions.
The installation conditions of the
SERVOPACK are not suitable
(the SERVOPACK is influenced
by the mounting direction,
mounting space, or ambient
heat). Reconsider the installation con-
ditions so that the ambient tem-
perature will be 55
°C or less.
The servomotor is operating in
excess of the rated output. Reduce the load.
The built-in cooling fan of the
SERVOPACK stopped operat-
ing. Replace the cooling fan.
The SERVOPACK and servo-
motor capacities do not match
each other. Refer to the catalog and select
the proper combination of SER-
VOPACK and servomotor
capacities.
A SERVOPACK fault occurred. Replace the SERVOPACK.
The servomotor burned out. Check the balance of the
resistance between servomotor
phases. If there is any
unbalance, replace the servo-
motor.
Alarm
Display
Alarm
Name
Conditions at
Alarm Occur-
rence
Cause Corrective Action
AL1
AL2
AL3