YASKAWA SGM-A3 User Manual page 171

APPLICATIONS OF Σ-SERIES PRODUCTS
3.8.5 Using an Absolute Encoder cont.
3
158
8) Alarm Display
When a 12-bit absolute encoder is used, the following alarms are detected and dis-
played.
List of Alarms
Alarm Type
Indicates that backup
voltage drop was
detected. (This alarm
Backup Alarm
helps maintain reliability of
rotation count data.)
Indicates that backup
voltage drop was
detected. (This alarm
Battery Alarm
warns of battery
replacement and
disconnection.)
Indicates that an error
Checksum
was detected in memory
Error
data check.
Indicates that the motor
was running at a speed
Overspeed exceeding 400 r/min when
the encoder was turned
ON.
Indicates that an error
Absolute Error was detected in sensor
check inside the encoder.
Backup/Battery
Combination
Alarm
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 control power is turned
OFF by the external circuit when an alarm occurs.)
SEN Signal
"H"
Digital
Operator
or
Display
PAO Serial
Data
Incremental pulse
P¦jjjjj,
PSO Serial
jjjj CR
Data
Digital
Meaning Operator
Display
"L":
Error detection
"H"
Absolute encoder alarm
(Details unknown)
ALM80.
H¦jjjjj,
(Undefined)
jjjj CR
and so on
PAO Serial PSO Serial
Data Data
ALARMOA
CR
ALM81. BACK
ALARMOD
BATT
CR
ALM83.
ALARMOB
CR CHEC
ALM82.
ALARMOP
CR
ALM85.
OVER
ALARMOH
CR
ALM84.
ABSO
ALARMOE
BACK
CR
ALM81.
(BATT)
"L"
"H"
Absolute encoder alarm
(Alarm type identified)
ALM8
ALARMO
*
*
CR
CR
ALARMO
*
(Undefined)
****
CR
CR
CR
CR
CR
CR
CR
.
CR