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

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With the position detector (encoder) fitted to the motor end, you can perform position stop (orientation) control of the 
rotation shaft. Refer to page 159 for details.

z Pre-excitation
When the start signal (STF, STR) is not input to the inverter (during a stop), turning on the pre-excitation terminal LX 
enables 0 speed control or servo lock. (Refer to page 82 for details.)
z Servo on
Use the LX signal to exercise position control.
Turning on the LX signal switches the servo on and cancels the base circuit shut-off, resulting in a servo lock status. 
(Refer to page 55 for details.)

Pr. 350 "stop position command selection", Pr. 351 "orientation switchover speed", Pr. 356 "internal stop position command", Pr. 357 
"orientation in-position zone", Pr. 360 "external position command selection", Pr. 361 "position shift", Pr. 362 "orientation position loop 
gain", Pr. 393 "orientation selection", Pr. 396 "orientation speed gain (P term)", Pr. 397 "orientation speed integral time", Pr. 398 
"orientation speed gain (D term)", Pr. 399 "orientation deceleration ratio" (Refer to page 159.)

Pre-excitation 

⇒ Pr. 802 "pre-excitation selection" (Refer to page 82.)

Servo-on 

⇒ Pr. 419 "position command source selection", Pr. 420 "command pulse scaling factor numerator", Pr. 421 "command 

pulse scaling factor denominator", Pr. 422 "position loop gain", Pr. 423 "position feed forward gain", Pr. 424 "position 
command acceleration/deceleration time constant", Pr. 425 "position feed forward command filter", Pr. 426 "in-position 
width", Pr. 427 "excessive level error", Pr. 430 "pulse monitor selection", Pr. 464 "digital position control sudden stop 
deceleration time", Pr. 465 to Pr. 494 (position feed amount) (Refer to page 55.)

Short the output stop terminals MRS-SD during inverter output to cause 
the inverter to stop the output immediately.
This function is valid in any mode independently of the control mode.
Open terminals MRS-SD to resume operation in about 20ms.
Terminal MRS may be used as described below.

(1) To stop the motor by mechanical brake (e.g. electromagnetic brake)

 

Terminals MRS-SD must be shorted when the mechanical brake is 
operated and be opened before the motor that has stopped restarts.

(2) To provide interlock to disable operation by the inverter

 

After terminals MRS-SD have been shorted, the inverter cannot be 
operated if the start signal is given to the inverter.

(3) To coast the motor to stop

The motor is decelerated according to the preset deceleration time 
and is stopped by operating the DC injection brake at the DC 
injection  brake operation speed or less. Using terminal MRS, the 
motor is coasted to a stop.

The connection example given here is used to self-hold 
the start signal (forward rotation, reverse rotation).
* Connected to the STOP signal to disable forward or 

reverse rotation if forward or reverse rotation and stop 
are turned on at the same time.

ON

ON

Across MRS-SD

Across STF 
(STR)-SD

Motor coasts 
to stop

Approx.
20ms

0.5r/min

SD

STF

STR

*

(Wiring example for sink logic)

STOP

Forward

rotation 
Reverse

rotation 

Stop