Yaskawa Σ-V Series AC Servo Drives Rotational Motor Analog Voltage Reference - Manual (Page 262)

9.1 Alarm Displays
9-3
9
Trou
blesh
ooting
A.511
Overspeed of Encoder
Output Pulse Rate
The pulse output speed upper limit of the set
encoder output pulse (Pn212) is exceeded.
Gr.1 Available
A.520 Vibration Alarm
Incorrect vibration at the motor speed was
detected.
Gr.1 Available
A.521 Autotuning Alarm
Vibration was detected while performing tun-
ing-less function.
Gr.1 Available
A.710 Overload: High Load
The servomotor was operating for several sec-
onds to several tens of seconds under a torque
largely exceeding ratings.
Gr.2 Available
A.720 Overload: Low Load
The servomotor was operating continuously
under a torque exceeding ratings.
Gr.1 Available
A.7A0 Heat Sink Overheated
The heat sink of the SERVOPACK exceeded
90
° C.
Gr.2 Available
A.810 Encoder Backup Error
The power supplies to the encoder all failed and
position data was lost.
Gr.1 N/A
A.820 Encoder Checksum Error
The checksum results of encoder memory is
incorrect.
Gr.1 N/A
A.830
Absolute Encoder Battery
Error
The battery voltage was lower than the specified
value after the control power supply was turned
ON.
Gr.1 Available
A.840 Encoder Data Error Data in the encoder is incorrect. Gr.1 N/A
A.850 Encoder Overspeed
The encoder was rotating at high speed when
the power was turned ON.
Gr.1 N/A
A.860 Encoder Overheated The internal temperature of encoder is too high. Gr.1 N/A
A.b10
*1 Speed Reference A/D Error
The A/D converter for speed reference input is
faulty.
Gr.2 Available
A.b11
*1
Speed Reference A/D Data
Error
A/D conversion data of speed reference input is
incorrect.
Gr.2 Available
A.b20 *1
Reference Torque Input Read
Error
The A/D converter for torque reference input is
faulty.
Gr.2 Available
A.b31 Current Detection Error 1
The current detection circuit for phase U is
faulty.
Gr.1 N/A
A.b32 Current Detection Error 2
The current detection circuit for phase V is
faulty.
Gr.1 N/A
A.b33 Current Detection Error 3 The detection circuit for the current is faulty. Gr.1 N/A
A.bF0 System Alarm 0
"Internal program error 0" of the SERVOPACK
occurred.
Gr.1 N/A
A.bF1 System Alarm 1
"Internal program error 1" of the SERVOPACK
occurred.
Gr.1 N/A
A.bF2 System Alarm 2
"Internal program error 2" of the SERVOPACK
occurred.
Gr.1 N/A
A.bF3 System Alarm 3
"Internal program error 3" of the SERVOPACK
occurred.
Gr.1 N/A
A.bF4 System Alarm 4
"Internal program error 4" of the SERVOPACK
occurred.
Gr.1 N/A
A.C10 Servo Overrun Detected The servomotor ran out of control. Gr.1 Available
A.C80
Absolute Encoder Clear Error
and Multiturn Limit Setting
Error
The multiturn for the absolute encoder was not
properly cleared or set.
Gr.1 N/A
A.C90
Encoder Communications
Error
Communications between the SERVOPACK
and the encoder is not possible.
Gr.1 N/A
∗1. This alarm will occur only for a SERVOPACK for analog voltage references.
(cont’d)
Alarm
Number
Alarm Name Meaning
Servo-
motor
Stopping
Method
Alarm
Reset