YASKAWA SIGMA-7 Series User Manual

6.1 Alarm Displays
6.1.2 Troubleshooting Alarms
6
Maintenance
6-21
A.861:
Motor Over-
heated
The surrounding tem-
perature around the
Servomotor is too
high.
Measure the surround-
ing temperature around
the Servomotor.
Reduce the surrounding
air temperature of the
Servomotor to 40°C or
less.
–
The motor load is
greater than the rated
load.
Check the load with the
accumulated load ratio
on the Motion Monitor
Tab Page on the Sig-
maWin+.
Operate the Servo Drive
so that the motor load
remains within the speci-
fied range.
*1
A failure occurred in
the Serial Converter
Unit.
–
Turn the power supply to
the SERVOPACK OFF and
ON again. If the alarm still
occurs, the Serial Con-
verter Unit may be faulty.
Replace the Serial Con-
verter Unit.
–
A failure occurred in
the SERVOPACK.
–
Turn the power supply to
the SERVOPACK OFF and
ON again. If the alarm still
occurs, the SERVOPACK
may be faulty. Replace the
SERVOPACK.
–
A.862:
Overheat Alarm
The surrounding tem-
perature is too high.
Check the surrounding
temperature using a
thermometer.
Lower the surrounding
temperature by improving
the installation conditions
of the Linear Servomotor
or the machine.
–
The overheat protec-
tion input signal line is
disconnected or
short-circuited.
Check the input voltage
with the overheat pro-
tection input information
on the Motion Monitor
Tab Page on the Sig-
maWin+.
Repair the line for the
overheat protection input
signal.
–
An overload alarm
was reset by turning
OFF the power sup-
ply too many times.
Check the alarm display
to see if there is an
overload alarm.
Change the method for
resetting the alarm.
–
Operation was per-
formed under an
excessive load.
Use the accumulated
load ratio to check the
load during operation.
Reconsider the load and
operating conditions.
–
A failure occurred in
the SERVOPACK.
–
The SERVOPACK may be
faulty. Replace the
SERVOPACK.
–
The temperature
detection circuit in the
Linear Servomotor is
faulty or the sensor
attached to the
machine is faulty.
–
The temperature detec-
tion circuit in the Linear
Servomotor may be faulty
or the sensor attached to
the machine may be
faulty. Replace the Linear
Servomotor or repair the
sensor attached to the
machine.
–
A.890:
Encoder Scale
Error
A failure occurred in
the linear encoder.
–
The linear encoder may
be faulty. Replace the lin-
ear encoder.
–
A.891:
Encoder Module
Error
A failure occurred in
the linear encoder.
–
Turn the power supply to
the SERVOPACK OFF and
ON again. If the alarm still
occurs, the linear encoder
may be faulty. Replace the
linear encoder.
–
Continued on next page.
Continued from previous page.
Alarm Number:
Alarm Name
Possible Cause Confirmation Correction Reference

YASKAWA SIGMA-7 Series Specifications

General

Encoder Resolution	24-bit absolute encoder
Pollution Degree	2
Cooling Method	Natural cooling or forced air cooling
Control Method	Vector control
Communication Protocols	EtherCAT, MECHATROLINK-III
Input Voltage	AC 200 V, AC 400 V
Rated Output	Varies by model
Safety Function	STO (Safe Torque Off), SS1 (Safe Stop 1), SS2 (Safe Stop 2), SLS (Safely Limited Speed), SBC (Safe Brake Control)
Power Supply Voltage	AC 200 V, AC 400 V
Rated Output Current	Varies by model
Protection Functions	Overload, overvoltage, undervoltage, overheat, short circuit
Operating Temperature	0°C to 55°C
Storage Temperature	-20°C to 65°C
Vibration Resistance	5.9 m/s² at 10 Hz to 55 Hz
Ambient Humidity	5% to 95% RH (non-condensing)
Altitude	Up to 1000 m
Installation	Panel mounted