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110
Motor brake and stop operation
4.9 Motor brake and stop operation
4.9.1
DC injection brake (Pr. 10 to Pr. 12)
The above parameters can be set when
Pr. 160 Extended function display selection
="0".
(3) Operation voltage (torque) setting
(Pr. 12)
Use
Pr. 12
to set the percentage to the power supply voltage.
When
Pr. 12
= "0%", the DC injection brake is disabled. (At a stop, the motor coasts.)
When using the constant-torque motor (SF-JRCA) and energy saving motor (SF-HR, SF-HRCA), change the
Pr. 12
setting
as follows:
SF-JRCA:
3.7K or lower...4%, 5.5K or higher...2%
SF-HR, SF-HRCA:
3.7K or lower...4%, 5.5K and 7.5K...3%, 11K and 15K...2%
Purpose
Parameter that should be Set
Refer to Page
Motor braking torque adjustment
DC Injection brake
Pr. 10 to Pr. 12
Improve the motor braking torque with
an option
Selection of a
regenerative brake
Pr. 30, Pr. 70
Coast the motor to a stop
Selection of motor
stopping method
Pr. 250
The DC injection brake can be operated at a motor stop to adjust the stop timing and braking torque.
In DC injection brake operation, DC voltage is directly applied to the motor to prevent the motor shaft from rotating. The
motor will not return to the original position if the motor shaft rotates due to external force.
Parameter
Number
Name
Initial Value
Setting
Range
Description
10
DC injection brake
operation frequency
3Hz
0 to
120Hz
Operation frequency of the DC injection
brake.
11
DC injection brake
operation time
0.5s
0
DC injection brake disabled
0.1 to 10s
Operation time of the DC injection
brake.
12
DC injection brake
operation voltage
0.1K, 0.2K
6%
0 to 30%
DC injection brake voltage (torque).
When "0" is set, DC injection brake is
disabled.
0.4K to 7.5K
4%
11K, 15K
2%
(1) Operation frequency setting
(Pr. 10)
When the frequency at which the DC injection brake will be operated is
set to
Pr. 10
, the DC voltage is applied to the motor upon reaching to
the set frequency during deceleration.
(2) Operation time setting
(Pr. 11)
In
Pr. 11
, set the time of the DC injection brake.
When the motor does not stop due to large load moment (J), increasing
the setting produces an effect.
When
Pr.
11
= "0s", the DC injection brake is disabled. (At a stop, the
motor coasts.)
Operation frequency
Time
Pr. 10
Time
Operation
voltage
Pr. 12
DC injection
brake voltage
Operation time
Pr. 11
(Hz)
Output frequency
Summary of Contents for FR-D710W-0.1K
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