Yaskawa G5HHP Drive User Manual

Page 233

7.5 Common Functions

7 - 69

Operation

Motor Switch command

(CLOSED for motor 2)

U, V, W

(T1, T2, T3)

Multi-function input

Multi-function output

Note Use an external sequence to switch between M1 and M2

and to confirm the motor selection status.

Motor 1 (main motor)

Motor 2 (auxiliary motor)

Motor selection monitor

(CLOSED for motor 2)

•

The control method, V/f characteristics, and motor constants recorded in the Inverter can be

switched by setting “16” (motor switch command) for a constant from H1-01 to 06 (multi-function

inputs), and then inputting a signal while the motor is stopped.

•

The current motor selection can be monitored at a multi-function output terminal by setting “1C”

(motor selection monitor) for a constant from H2-01 to 03 (multi-function outputs).

•

Set the Basic (3) or Advanced (4) access level in the initialize setting A1-01 (access level).

•

The constants being used will changed as shown in the following table for the motor switch com-

mand.

Motor Switch command

OPEN (motor 1)

CLOSED (motor 2)

Control method

A1-02 (control method in initialize

settings)

E3-01 (motor 2 control method)

V/f characteristics

E1-04 to 13 (V/f characteristics)

E4-01 to 07 (motor 2 V/f character-

istics)

Motor constants

E2-01 to 09 (motor constants)

E5-01 to 06 (motor 2 motor

constants)

Motor selection monitor

OPEN

CLOSED

The timing chart for switching between motor 1 and motor 2 is shown below.

Turn ON the Forward (reverse) command only

after confirming the status of the motor selection

monitor.

Motor switching

contactor

Motor switch command

M1 operation

M2 operation

Motor selection monitor

Forward (reverse)

command

OFF

Approx. 200 ms

Approx.

50 ms

OFF

(Approx. 500 ms for control with a PG)

Fig 7.33

Timing Chart for Switching from Motor 1 to Motor 2