SMC Networks LECSB2-T Series User Manual

8. TROUBLESHOOTING
8 - 33
Alarm No.: 33
Name: Overvoltage
Alarm content
・The value of the bus voltage exceeded the prescribed value.
Detail
No.
Detail name
Cause
Check method
Check result
Action
33.1
Main circuit
voltage error
(1)
The setting of the
regenerative resistor
(regenerative option) is
incorrect.
Check the regenerative
resistor (regenerative
option) and [Pr. PA02]
setting.
The setting value is
incorrect.
Set it correctly.
It is set correctly.
Check (2).
(2)
The regenerative
resistor (regenerative
option) is not connected.
Check if the
regenerative
resistor (regenerative
option) is connected
correctly.
It is not connected
correctly.
Connect it correctly.
It is connected
correctly.
Check (3).
(3)
Wire breakage of builtin
regenerative resistor
or regenerative option
Measure the resistance
of the built-in
regenerative resistor or
regenerative option.
The resistance is
abnormal.
When using a built-in
regenerative resistor, replace
the driver. When using a
regenerative option, replace
the regenerative option.
The resistance is
normal.
Check (4).
(4)
The regeneration
capacity is insufficient.
Set a longer
deceleration time
constant, and then
check the repeatability.
It is not repeatable.
When using a built-in
regenerative resistor, use
a regenerative option.
When using a regenerative
option, use a larger capacity
one.
It is repeatable.
Check (5).
(5)
Power supply voltage
high.
Check if the voltage of
the input power supply
is over the prescribed
value.
264 V AC
It is higher than the
prescribed value.
Reduce the power supply
voltage.
It is at the prescribed
value or lower.
Check (6).
(6)
Something near the
device caused it.
Check the noise,
ambient
temperature, etc.
There is a problem in
the surrounding.
Take countermeasures
against its cause.
Alarm No.: 35
Name: Command frequency error
Alarm content
Input pulse frequency of command pulse is too high.
Detail
No.
Detail name
Cause
Check method
Check result
Action
35.1
Command
frequency error
(1)
The command pulse
frequency is high.
Check the command
pulse frequency.
The command pulse
frequency is high.
Check operation
pattern.
The command pulse
frequency is low.
Check (2).
(2)
The setting of
"Command input pulse
train filter selection" in
[Pr. PA13] is not
correct.
Check if the command
pulse frequency is
within the setting range
of the filter.
It is out of setting
range.
Review the filter
setting.
It is within the setting
range.
Check (6).
(3)
Inputted frequency with a
manual pulse
generator is high.
Check the inputted
frequency of the
manual pulse generator
The command pulse
frequency is high.
Reduce the inputted
frequency of the
manual pulse
generator.
The command pulse
frequency is low.
Check (6).
(4)
Something near the
device caused it.
Check the noise,
ambient temperature,
etc.
There is a problem in
the surrounding.
Take ountermeasures
against its cause.

SMC Networks LECSB2-T Series Specifications

General

Brand	SMC Networks
Model	LECSB2-T Series
Category	DC Drives
Language	English