YASKAWA NX100 - Page 138

8.3 Alarm Message List
8-34
1554 OVER CUR-
RENT (SERVO2)
--- A ground fault along the motor
power line, interphase short-circuit-
ing, motor error, or SERVOPACK
error is suspected.
• Turn the power OFF then back ON.
• Check if a ground fault has not occurred in
the U-, V-, and W-phase of motor power
line, or short circuit has not occurred
between these phases.
• Turn the power off and naturally cool down
the manipulator. If the error does not occur
again after natural cooling, review the
manipulator motion conditions (such as
influence by external force and load condi-
tion) and ambient operating temperature.
• Replace the motor and SERVOPACK.
1555 ENCODER
BACK-UP
ERROR
(SERVO2)
--- The voltage drop of encoder
backup battery is suspected.
• Turn the power OFF then back ON.
• Check the connection and voltage of the
encoder backup battery.
• Correct the encoder connection.
• Replace the motor and SERVOPACK.
1556 ENCODER
INTERNAL DATA
ERROR
(SERVO2)
--- Serial encoder memory error
occurred.
• Turn the power OFF then back ON.
• Replace the motor and SERVOPACK.
1557 ENCODER
ABSOLUTE
ERROR
(SERVO2)
--- Serial encoder internal parameter
error occurred.
• Turn the power OFF then back ON.
• Correct the encoder connection.
• Replace the motor and SERVOPACK.
1558 ENCODER
SPEED ERROR
(SERVO2)
--- When the power turned ON, the
motor speed may have exceeded
the threshold speed.
• Turn the power OFF then back ON.
• Replace the motor and SERVOPACK.
1559 COMMUNICA-
TION GATE
ARRAY ERROR
(SERVO2)
--- The MECHATROLINK communica-
tion ASIC error occurred.
• Turn the power OFF then back ON.
• Replace the SERVOPACK.
1560 SYSTEM
ERROR
(SERVO2)
--- The internal program error occurred
in the SERVOPACK.
• Turn the power OFF then back ON.
• Replace the SERVOPACK.
1561 BROKEN PG
LINE(A-, B-
PHASE)
(SERVO2)
--- The A-phase or B-phase of encoder
is disconnected.
• Turn the power OFF then back ON.
• Correct the encoder connection.
• Check for noise.
• Replace the motor and SERVOPACK.
1562 BROKEN PG
LINE(C-PHASE)
(SERVO2)
--- The C-phase of encoder is discon-
nected.
• Turn the power OFF then back ON.
• Correct the encoder connection.
• Check for noise.
• Replace the motor and SERVOPACK.
1563 ENCODER
MULTI-RETURN
LIMIT SETTING
ERROR
(SERVO2)
--- A clearance or setup of the abso-
lute encoder multi-turn quantity
could not be performed correctly.
• Turn the power OFF then back ON.
• Replace the motor and SERVOPACK.
1564 COMMUNICA-
TION ERROR
(ENCODER)
(SERVO2)
--- A communication error occurred
between encoder and SERVO-
PACK.
• Turn the power OFF then back ON.
• Correct the encoder connection.
• Check for noise.
• Replace the motor and SERVOPACK.
1565 ENCODER
PARAMETER
ERROR
(SERVO2)
--
- The encoder parameter error
occurred.
• Turn the power OFF then back ON.
• Replace the motor and SERVOPACK.
Alarm Message List
Alarm
Number
Message
Sub
Code
Cause Remedy