YASKAWA SIGMA-7 Series User Manual

4.3 Alarms Related to Synchronized Stopping
4-6
4.3 Alarms Related to Synchronized Stopping
If an alarm without valid position data occurs, the servo will be turned OFF for the synchronized
stopping axis and synchronized stopping will not be performed.
The alarms without valid position data are given in the following table.
Alarm
Number
Alarm Name Alarm Meaning
A.810 Encoder Backup Alarm
The power supplies to the encoder all failed and the position
data was lost.
A.820 Encoder Checksum Alarm
There is an error in the checksum results for encoder mem-
ory.
A.840 Encoder Data Alarm There is an internal data error in the encoder.
A.850 Encoder Overspeed
The encoder was operating at high speed when the power
was turned ON.
A.890 Encoder Scale Error A failure occurred in the linear encoder.
A.891 Encoder Module Error An error occurred in the linear encoder.
A.C90 Encoder Communications Error
Communications between the encoder and SERVOPACK is
not possible.
A.C91
Encoder Communications Posi-
tion Data Acceleration Rate Error
An error occurred in calculating the position data of the
encoder.
A.C92
Encoder Communications Timer
Error
An error occurred in the communications timer between the
encoder and SERVOPACK.

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