Nidec Control Techniques Digitax-SF DA21223, Инструкция по эксплуатации

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13
8
Troubleshooting
8. Troubleshooting
Digitax SF
Instruction Man
ual
3. Alarms and Remedies
3. Alarms and Remedies
Alarm No.
14 Overvoltage
Symptom
and
Possible Cause
The
power supply to
the control component
s
has exceeded the
drive
circuit limits.
Remedy
If the alarm occurs only during deceleration
By using the Setup Panel or
Digitax SF Connect
, check the regeneration status, which
tells you if a
braking
resistor is necessary. If necessary, install a
braking
resistor.
Check the motion patterns of commands.
Use a command filter and gradually decrease the speed.
If the alarm occurs regardless of deceleration
Verify that the
AC Supply
is within specification. Check for voltage
changes while the whole system is operating.
Reset Method
Alarm No.
15
Power supply (
AC Supply
)
Symptom
and
Possible Cause
The
AC Supply
voltage is abnormally high or low.
The
AC Supply
was not
present
.
The
AC Supply
was not within the input range.
The
power supply
fluctuated and exceeded the rated range.
SVON signal was input without
AC
supply
being present
.
Anomaly of the regenerative control circuit operating time lasted longer than a specific
amount of time.
Regeneration ON status
too long
Remedy
If the alarm occurred between servo on and operation startup
Verify that the
AC Supply
is connected to the
drive
. Check
the
AC supply
.
Check the timing of
AC Supply
input and SVON signal input.
If the alarm occurred during motor operation
Check for no voltage fluctuations due to the whole system operation.
Provide enough power supply so that the system experiences no voltage fluctuations.
If the alarm occurs during deceleration
Check the regenerative voltage warning
signal
on the Setup Panel or
Digitax
SF Connect
. If a regenerative voltage warning occurs, install a
braking
resistor. Check the motion patterns directed by commands.
Gradually decrease speeds by using a command smoothing filter.
Reset Method
RESET Signal
① Eliminate the cause.
② input RESET signal to the RESET terminal
on the connector CN1.
Control-power cycle
① Eliminate the cause.
② Cycle control-power.
CLEAR Encoder
① Eliminate the cause.
② Execute CLEAR Encoder
③ Cycle control-power.
After power cycle, perform Homing.