YASKAWA SGDA series User Manual

APPLICATIONS OF Σ-SERIES PRODUCTS
3.8.5 Using an Absolute Encodercont.
156
8) Alarm Display
When a 12-bit absolute encoder is used, the following alarms are detected and dis-
played.
List of Alarms
Alarm Type Meaning
Digital
Operator
Display
PAO Serial
Data
PSO Serial
Data
Backup Alarm
Indicates that backup
voltage drop was
detected. (This alarm
helps maintain reliability of
rotation count data.)
CR
ALM81.
CR
ALARMOA
BACK
Battery Alarm
Indicates that backup
voltage drop was
detected. (This alarm
warns of battery
replacement and
disconnection.)
CR
ALM83.
CR
ALARMOD
BATT
Checksum
Error
Indicates that an error
was detected in memory
data check.
CR
ALM82.
CR
ALARMOB
CHEC
Overspeed
Indicates that the motor
was running at a speed
exceeding 400 r/min when
the encoder was turned
ON.
CR
ALM85.
CR
ALARMOP
OVER
Absolute Error
Indicates that an error
was detected in sensor
check inside the encoder.
CR
ALM84.
CR
ALARMOH
ABSO
Backup/Battery
Combination
Alarm
CR
ALM81.
CR
ALARMOE
BACK
(BATT)
The SEN signal can be used to output alarm information from PAO and PSO as se-
rial data. (This function is not available if the Servopack is turned OFF by the exter-
nal circuit when an alarm occurs.)
SEN Signal
“H” “H”
“L”:
“H”
“L”
Error detection
Digital
Operator
Display
or
Absolute encoder alarm
(Details unknown)
Absolute encoder alarm
(Alarm type identified)
PAO Serial
Data
Incremental pulse
CR
ALM80.
CR
ALARMO
*
CR
ALM8
*
.
PSO Serial
Data
P¦jjjjj,
jjjj
CR
and so on
H¦jjjjj,
jjjj
CR
(Undefined)
CR
ALARMO
*
****
(Undefined)
3

YASKAWA SGDA series Specifications

General

Brand	YASKAWA
Model	SGDA series
Category	Servo Drives
Language	English