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

Using the second motor

1.11 Using the second motor

1.11.1 Wiring diagram (second motor)

1.11.2 Second motor setting parameters

z Turn on/off the RT signal to switch between the first and second motors using contacts information of the

magnetic contactor (MC).

(Use the RT signal after setting it to any of the DI1 to DI4 signals using Pr. 180 to Pr. 183, Pr. 187 (input terminal

function selection).

z Select V/F control for the Pr. 451 setting. Vector control with encoder can not be selected.

z By setting values other than "9999" in Pr. 451 when Pr. 450 = "9999" (factory setting), the control system of the first

motor can be changed by switching the RT terminal on and off.

(In this case, turning the RT signal on makes the second function of Pr. 44, Pr. 45, Pr. 452, and Pr. 830 to Pr. 837 valid.)

Param

eter

Name

Factory

Setting

Setting Range

Mitsubishi standard motor (SF-JR)

Inverter internal
constant

Mitsubishi constant torque motor

(SF-HRCA)

Inverter internal

constant

Refer to

450

Second applied motor

9999

SF-V5RU dedicated motor

(includes SF-VR type motor)

Inverter internal
constant

page 111.

9999

Function invalid

Pr. 71 "applied motor" is made valid.

451

Second motor control
method selection

9999

V/F control

Speed control

9999

Function invalid

The setting is the same as that of control system of Pr. 800 "control

system selection". (*)

452

Second electronic
thermal O/L relay

9999

Set the rated motor current.

0 to 500A (Refer to page 80.)

9999

Function invalid

453

Second motor
capacity

Inverter

capacity

Set the motor capacity.
0.4 to 55kW

Setting can

be made

when

Pr. 450

"9999"

454

Number of second
motor poles

Set the number of motor poles.
2, 4, 6P

CAUTION

* Even when the first motor is under vector control, the second motor is V/F controlled while the RT

signal is on independently of the Pr. 451 setting when Pr. 450 "9999".

CAUTION

1. Provide interlocks to prevent the MC1 and MC2

from being turned on simultaneously.

2. For the second motor (motor without encoder),

use Pr. 452 "second electronic thermal O/L relay"
or provide an external thermal relay.

3. *: Give one external thermal relay signal to across

OH-SD.

Related parameters

Second electronic thermal relay function setting

⇒ (Pr. 452 "second

electronic thermal O/L relay" (Refer to page 80.))

Inverter

Motor without encoder

(Second motor)

MC2

MC1

PAR

PBR

PZR

Encoder

Mitsubihi dedicated motor

(SF-V5RU) (First motor)

Thermal
protector