Справочник Пользователя для Mitsubishi Electronics FR-V540-1.5K to 55K

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• Use Pr. 10 to set the speed at which the DC injection brake application is started.

 

By setting "9999", the brake is operated at or below the speed set in Pr. 13.

• When stopping the motor by using a STOP key or turning the STF/STR off, the DC injection brake application is 

started at the speed set in Pr.10. When stopping the motor by setting speed to 0r/min (with PU or Volume), the 
DC injection brake application is started at the speed set in Pr.13.

• Use Pr. 11 to set the duration period the brake is applied. During this period, DC injection brake operation is 

exercised.

 

When this period has elapsed, the motor is coasted to a stop.

• Use Pr. 12 to set the percentage to the power supply voltage. (Use this parameter only during V/F control.)

 

When using the inverter dedicated motor (Mitsubishi constant-torque motor SF-JRCA and Mitsubishi energy 
saving motor SF-HR, SF-HRCA), change the Pr. 12 setting as follows:
•SF-JRCA: 3.7K or less ... 4%, 5.5K or more ... 2%
•SF-HR, SF-HRCA: 3.7K or less ... 4%, 5.5K, 7.5K ... 3%, 11K or more ... 2%

Select either 0 speed control or servo lock control for brake operation when pre-excitation is performed with the LX 
signal using Pr.802. 

 

Turning on the LX signal enables the pre-excitation operation. (valid only during speed control)

By setting the DC injection brake voltage (torque) at a stop, operation time and operation starting speed, the 
stopping accuracy of positioning operation, etc. or the timing of applying the DC injection brake to stop the 
braking torque and the motor is adjusted.

10

DC injection brake 
operation speed

15r/min

0 to 1500

r/min, 9999

9999: Operated at or below 
Pr. 13 value.

Extended 
mode

11

DC injection brake 
operation time

0.5s

0 to 0.5s

12

DC injection brake 
voltage

4%/2%

(7.5K or less/11K or more)

0 to 30%

Use during V/F control.

802

Pre-excitation 
selection

0

0, 1

Use during speed control.

• For the 5.5K and 7.5K, the Pr. 12 setting is automatically changed to 2% if Pr. 71 "applied motor" value is set to the 

Mitsubishi constant torque motor. To the contrary, the Pr. 12 setting is changed to 4% if the Pr. 71 value is set to the general 
purpose motor.

802

Pre-excitation 

selection

0: 0 speed control (factory setting)
Even under load, an attempt is made to maintain 0r/min to keep the motor shaft stopped. 
Note that if the shaft is overcome and turned by external force, it does not return to the 
original position.
Position control is not exercised and only speed control is carried out to perform operation.
1: Servo lock
Even under load, an attempt is made to maintain the motor shaft position. Note that if the 
shaft is turned by external force, it returns to the original position after the external force has 
gone away.
Since position control is exercised, you can adjust this position loop gain using Pr. 422 
"position loop gain".

speed

torque

speed

position