Delta ASD-A2-0121 Series User Manual page 620

Chapter 10 Troubleshooting
Display Alarm Name
Encoder clearing
AL07E
procedure error
Servo drive
outputs
AL083
excessive
current
Regeneration
AL085
setting error
Input voltage is
AL086
too high
The servo drive
does not
connect to
AL095
external
regenerative
resistor
DSP Firmware
AL099
Upgrade
STO function is
AL500
enabled
STO_A loss
(signal loss or
AL501
signal error)
STO_B loss
(signal loss or
AL502
signal error)
STO self-
AL503
diagnostic error
Alarm Description
Number of attempts to clear the encoder
exceeds the maximum.
When the output current from servo
drive exceeds the setting level, AL083
will be triggered to protect IGBT. This
could avoid IGBT to be burned out
because of the excessive current.
Regeneration control error.
When the servo drive detects no
regenerative power, but other
regenerative energy (such as
interference) is input to the servo drive,
or voltage input is higher than the
permissible rated voltage.
As for the 220V 5.5 kW model or above,
if the value of P1-53 is not 0 and the
external regenerative resistor or the
brake is not connected, the alarm
occurs.
EEPROM has not been reset after DSP
firmware is upgraded. To clear the
alarm, set P2-08 to 30 first and then set
it to 28. Next, cycle power on the servo
drive.
Safe torque off function (STO) is
enabled.
Loss of STO_A signal or STO_A and
STO_B signals are not synchronized for
more than 1 sec.
Loss of STO_B signal or STO_A and
STO_B signals are not synchronized for
more than 1 sec.
STO self-diagnostic error
ASDA-A2
Corresponding Servo
DO Status
Servo
ALM
Off
Servo
ALM
Off
Servo
ALM
off
Servo
ALM
Off
Servo
WARN
On
Servo
ALM
Off
Servo
ALM
Off
Servo
ALM
Off
Servo
ALM
Off
Servo
ALM
Off
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