Yaskawa SGDB User Manual
Page 576
LIST OF ALARM DISPLAYS
570
Alarm Display
Alarm
Di l
Alarm Output
Alarm Name
Meaning
Remarks
Display
on Digital
Alarm Code Output
ALM
Out-
g
on Digital
Operator
ALO1
ALO2
ALO3
Out-
put
A.00
OFF
OFF
OFF
OFF
Absolute data
error
Absolute data fails to be re-
ceived, or received absolute
data is abnormal.
For absolute en-
coder only
A.02
OFF
OFF
OFF
OFF
Parameter
breakdown
Checksum results of parame-
ters are abnormal.
A.04
OFF
OFF
OFF
OFF
Parameter set-
ting error
The parameter setting is outside
the allowable setting range.
A.10
ON
OFF
OFF
OFF
Overcurrent
An overcurrent flowed through
the power transistor.
A.30
ON
ON
OFF
OFF
Detection of re-
generative er-
ror
Regenerative circuit is faulty
A.31
ON
ON
OFF
OFF
Position error
pulse overflow
Position error pulse has ex-
ceeded the value set in parame-
ter Cn-1E (overflow).
A.40
OFF
OFF
ON
OFF
Main circuit
voltage error
detection
Main circuit voltage is abnormal
A.51
ON
OFF
ON
OFF
Overspeed
Rotation speed of the motor has
exceeded detection level
Detection level =
Maximum rotation
speed x 1.1 or x1.2
A.71
ON
ON
ON
OFF
Overloaded
(high load)
The motor was running for sev-
eral seconds to several tens of
seconds under a torque largely
exceeding ratings.
A.72
ON
ON
ON
OFF
Overloaded
(low load)
The motor was running continu-
ously under a torque largely ex-
ceeding ratings
A.80
OFF
OFF
OFF
OFF
Absolute en-
coder error
The number of pulses per abso-
lute encoder revolution is abnor-
mal.
For absolute en-
coder only
A.81
OFF
OFF
OFF
OFF
Absolute en-
coder backup
error
All three power supplies for the
absolute encoder (+5 V, battery
and internal capacitor) have
failed.
For 12 bit absolute
encoder only
A.82
OFF
OFF
OFF
OFF
Absolute en-
coder check-
sum error
The checksum results of abso-
lute encoder memory is abnor-
mal.
For 12 bit absolute
encoder only
TERMS
Checksum
An automatic check function for a set of data such as parameters. It stores the sum of pa-
rameter data, recalculates the sum at specific timing, and then checks whether the stored
value matches the recalculated value. This function is a simple method of checking whether
a set of data is correct.
D