5-7
Display
Cause of error
Error detection
function
Alarm code
Display
Cause of error
Error detection
function
ALO3
ALO2
ALO1
OFF
OFF
ON
Low voltage
Main circuit DC voltage below the allowable
range.
ON
OFF
ON
Overspeed
Servomotor rotation speed exceeded the
maximum speed.
ON
ON
ON
Overload
Output torque exceeded 245% of rated
torque.
ON
ON
ON
Overload
Output torque continued at 120% to 245%
of rated torque.
ON
ON
ON
Dynamic brake over-
load
Regenerative energy exceeded the dynam-
ic brake resistance during dynamic brake
operation.
ON
ON
ON
Inrush resistance
overload
Inrush current exceeded the inrush resis-
tance during power supply inrush.
ON
ON
ON
Overheat
Abnormal temperature rise detected in radi-
ation shield. (Applicable to drivers
100/200 V, up to 1 kW with external ther-
mostat.)
OFF
OFF
OFF
Backup error (ABS)
Encoder backup power supply dropped.
OFF
OFF
OFF
Checksum error
(ABS)
Checksum error for encoder memory data.
OFF
OFF
OFF
Battery error (ABS)
Encoder battery voltage dropped (to 2.7 V
or lower).
OFF
OFF
OFF
Absolute error (ABS)
Encoder internal data error
OFF
OFF
OFF
Overspeed error
(ABS)
Servomotor rotation speed exceeded 200 r/
min when encoder power was turned ON.
OFF
OFF
OFF
Encoder overheating
(ABS)
Abnormal encoder temperature rise de-
tected.
OFF
OFF
OFF
Speed command in-
put reading error
The A/D end signal was not output from the
A/D converter within a fixed time.
OFF
OFF
OFF
Torque command in-
put reading error
The A/D end signal was not output from the
A/D converter within a fixed time.
OFF
OFF
OFF
System error
A control circuit system error was detected.
ON
OFF
ON
Runaway detected.
The Servomotor runs out of control.
ON
OFF
ON
Multi-turn data error
(ABS)
Absolute encoder setup was incorrect.
ON
OFF
ON
Encoder communica-
tions error
No communication between encoder and
Servo Driver.
ON
OFF
ON
Encoder parameter
error
Encoder parameters are corrupted.
ON
OFF
ON
Encoder data error
Data from the encoder is corrupted.
ON
OFF
ON
Multi-turn limit dis-
crepancy
The multi-turn limits for the encoder and the
Servo Driver do not conform.
ON
ON
OFF
Deviation counter
overflow
Deviation counter’s residual pulses exceed-
ed the deviation counter overflow level set
in Pn505.
ON
ON
OFF
Motor-load deviation
over Level
The Motor-load Deviation Over Level was
exceeded for fully closed and semiclosed
encoders.
Troubleshooting
Chapter 5
AUDIN - 7 bis rue de Tinqueux - 51100 Reims - France - Tel : 03.26.04.20.21 - Fax : 03.26.04.28.20 - Web : http: www.audin.fr - Email : [email protected]
