Mitsubishi Electronics FR-F700-NA ユーザーズマニュアル
112
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 User group read selection = "0". (Refer to page 190)
Purpose
Parameter that must 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
Performing operation by DC current input DC current feeding mode
Pr. 30
Coast the motor to a stop
Selection of motor stopping method
Pr. 250
Output stop function
Pr. 522
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 when a motor decelerates to stop.
The motor will not return to the original position if the motor shaft rotates due to external force.
In DC injection brake operation, DC voltage is directly applied to the motor to prevent the motor shaft from
rotating when a motor decelerates to stop.
The motor will not return to the original position if the motor shaft rotates due to external force.
Parameter
Number
Name
Initial Value
200V class (400V class)
Setting
Range
Description
10
DC injection brake
operation frequency
3Hz
0 to 120Hz
Set the operation frequency of the DC injection
brake.
9999
Operated at Pr. 13 or less.
11
DC injection brake
operation time
0.5s
0
DC injection brake disabled
0.1 to 10s
Set the operation time of the DC injection brake.
8888
Operate when X13 signal is ON
12
DC injection brake
operation voltage
00340 (00170) or
less
4%
0 to 30%
Set the DC injection brake voltage (torque). When
"0" is set, DC injection brake is disabled.
"0" is set, DC injection brake is disabled.
00490 to 02330
(00250 to 01160)
2%
03160 (01800) or
more
1%
When Pr. 11="0.1 to 10s"
When Pr. 11="8888"
(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.
frequency during deceleration.
⋅ At the Pr. 10 setting of "9999", the DC injection brake is operated when
deceleration is made to the frequency set in Pr. 13 Starting frequency.
(2) Operation time setting (Pr. 11)
⋅ In Pr. 11, set the time of the DC injection brake.
⋅ When Pr. 11 = "0s", the DC injection brake is disabled. (At a stop, the
motor coasts.)
⋅ When Pr. 11="8888", the DC injection brake is applied while X13 signal
is ON.
⋅ For the terminal used for X13 signal input, set "13" in any of Pr. 178 to Pr.
189 to assign the function. (Refer to page 122.)
⋅ When the motor does not stop due to large load moment (J), increasing
the setting produces an effect.
Time
Pr
. 10
Operation
frequency
Time
Pr.12
Operation
voltage
Operation
voltage
voltage
Pr. 11 Operation time
Output frequency (Hz)
DC injection
brake
brake
X13 signal
ON OFF
Time
Time
Pr.12
Operation
voltage
Operation
voltage
voltage
Output frequency (Hz)
DC injection
brake
brake