Yaskawa Large Capacity Sigma II Series User Manual
Page 377
8 Inspection, Maintenance, and Troubleshooting
8.2.3 Alarm Display Table
8-38
Note: OFF: Output transistor is OFF (high). ON: Output transistor is ON (low).
* 1. These alarms are not reset for the alarm reset signal (/ALM-RST). Eliminate the cause of the
alarm and then turn OFF the power supply to reset the alarms.
* 2. For the SERVOPACK with a capacity of 6.0 kW or higher, alarm 40 indicates main circuit DC
voltage is excessively high or low.
A.81
OFF
OFF
OFF
OFF
Encoder Backup Error
∗1
All the power supplies for the absolute
encoder have failed and position data was
cleared.
A.82
Encoder Checksum Error
∗1
The checksum results of encoder memory is
abnormal.
A.83
Absolute Encoder Battery
Error
Battery voltage for the absolute encoder has
dropped.
A.84
Encoder Data Error
∗1
Data in the encoder is abnormal.
A.85
Encoder Overspeed
The encoder was rotating at high speed when
the power was turned ON.
A.86
Encoder Overheated
The internal temperature of encoder is too
high.
A.b1
Reference Speed Input Read
Error
The A/D converter for reference speed input
is faulty.
A.b2
Reference Torque Input Read
Error
The A/D converter for reference torque input
is faulty.
A.bF
System Alarm
∗1
A system error occurred in the SERVO-
PACK.
A.C1
ON
OFF
ON
OFF
Servo Overrun Detected
The servomotor ran out of control.
A.C8
Absolute Encoder Clear
Error and Multiturn Limit
Setting Error
∗1
The multiturn for the absolute encoder was
not properly cleared or set.
A.C9
Encoder Communications
Error
∗1
Communications between SERVOPACK and
encoder is not possible.
A.CA
Encoder Parameter Error
∗1
Encoder parameters are faulty.
A.Cb
Encoder Echoback Error
∗1
Contents of communications with encoder is
incorrect.
A.CC
Multiturn Limit Disagree-
ment
Different multiturn limits have been set in the
encoder and SERVOPACK.
A.d0
ON
ON
OFF
OFF
Position Error Pulse Over-
flow
Position error pulse exceeded parameter
(Pn505).
A.E7
OFF
ON
ON
OFF
Option Unit Detection Error
Option unit detection fails.
A.F1
OFF
ON
OFF
OFF
Power Line Open Phase
One phase is not connected in the main power
supply.
CPF00
Not specified
Digital Operator Transmis-
sion Error
Digital Operator (JUSP-OP02A-2) fails to
communicate with SERVOPACK (e.g., CPU
error).
CPF01
A.- -
OFF
OFF
OFF
ON
Not an error
Normal operation status
Table 8.5 Alarm Display Table (cont’d)
Alarm
Display
Alarm Code Outputs
ALM Output
Alarm Name
Meaning
ALO1
ALO2
ALO3