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47
No. Parameter
name
Description
No.2 acceleration
time
The acceleration time can be set when [
I5 function selection] or [
I6 function selection] is set to
(No. 2 acceleration/deceleration).
No.3 acceleration
time
No.4 acceleration
time
These acceleration times can be set when [
I5 Function selection] and
[
I6 Function selection] are both set to
No.2 acceleration/
deceleration.
DC brake
intensity
DC brake time
Used to adjust the DC brake time and the DC brake intensity at the time
when the inverter shifts from the running status to the stop status.
•
When the
DC brake time and/or DC brake intensity is set to “0”, the motor
will coast.
* When the brake for urgent stop (full-range stop) is selected, the DC brake
time is twice as long as that of the positioning brake time.
DC brake
selection
Used to select the DC brake type.
■
Positioning
●
Full-range stop
Start-up brake
time
At start-up, the DC brake is activated for a specified time before the motor
actually starts running. When this parameter is set to “0”, the DC brake
will not work.
•
The DC brake intensity (torque) is specified by [
DC brake intensity].
However, when this parameter is set to “0”, the DC brake will not work.
Brake starting
frequency
Used to adjust the frequency at which the positioning DC brake starts
working.
•
The DC brake will be activated when the output frequency falls below
[Brake starting frequency] while the motor in normal operation is
soft-stopped by the stop command.
•
If the motor in normal operation stops as the frequency setting is reduced,
the DC brake will be activated when the output frequency falls below 1
Hz, regardless of the [Brake starting frequency] setting.
Carrier frequency
Select eight of the following frequencies while the motor is in stop status.
Selection made while the motor is running cannot be accepted.
■
■
: Factory setting
Set
value Carrier frequency
Metallic sound
from motor
Noise and leak
current
0 1.2kHz
1 2.6kHz
2 3.9kHz
3 6.0kHz
4 8.0kHz
5 10.1kHz
6 12.0kHz
7 14.9kHz
Large
Small
Small
Large
Setting
I5 - G
I6 - G
No. 3 acceleration
Open
Short-circuited
No. 4 acceleration
Short-circuited
Short-circuited