3.2.2 Connection of PG. Toshiba E6580772

E6580772③

3.2.2 Connection of PG

As for the pulse input signals, PGA1 and PGA2 are connected for Phase A, PGB1 and PGB2 are connected for Phase B, and PGZ1 and PGZ2 are connected for Phase Z.

(The wiring for Phase Z is done only when using Z-marker is necessary.)

The polarity of the pulse input signals should be as follows:

　

+ side: PGA1, PGB1, PGZ1

　

- side: PGA2, PGB2, PGZ2

The signal which is fed back from the encoder should have the waveform of the figure below in terms of the direction of motor rotation. The encoder installation direction and signal wiring should be done accordingly.

★

Forward rotation or reverse rotation is judged from the feedback pulses of Phase A and Phase B

(2-phase pulse that have 90 degrees of phase difference). Therefore, it should be noted that, when connections are wrong, there is possibility for abnormal rotation of the motor.

Phase A(VA)

Forward rotation

Phase B(VB)

Phase A(VA)

Reverse rotation

Phase B(VB)

PGA1

PGA2

PGB1

PGB2

A

A

B

B

↑Ｖ

↑Ｖ

Ｂ

A

PG

X

1

X

2

X

3

X

4

Ｔ

Phase difference：Xn≧0.15T(n=1,2,3,4)

Judgement on normal and reverse rotations by the PG feedback of two phases (Phases A and B)

<When PG feedback signal is single phase>

1. For PG feedback signal, connect terminals PGA1 and PGA2.

2. The judgement on forward rotation and reverse rotation is impossible.

Only the speed control mode is applicable.

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E6580772③

Inverter

R

S

Ｔ

Ｕ

Ｖ

Ｗ

I M

PG

Ｅ

Free run is stopped when OFF.

Forward rotation with ON and reduce speed and stop with OFF

Reverse rotation with ON and reduce speed and stop with OFF.

When both forward and reverse rotation is ON, reverse rotation.

ST

F

Ｒ

CC

ＴＢ２

PGA1

PGA2

PGB1

PGB2

PGVC

PGCC

A

A

B

B

V cc

0 V

(In case that cmod=0) Ｅ Ｅ

When single phase, connect terminals PGA1 and PGA2 only.

Connect PGCC of option unit and CC of inverter.

Example of complementary encoder connection

Inverter

R

S

Ｔ

Ｕ

Ｖ

Ｗ

I M

PG

Ｅ

Free run is stopped when OFF.

Forward rotation with ON and reduce speed and stop with OFF

Reverse rotation with ON and reduce speed and stop with OFF.

When both forward and reverse rotation is ON, reverse rotation.

（

In case that cmod=0

）

Connect PGCC of option unit and CC of inverter.

ST

F

Ｒ

CC

Ｅ Ｅ

ＴＢ２

PGA 1

PGA 2

PGB1

PGB2

PGV C

PGCC

Example of open collector encoder connection

Vcc

A

Vcc

B

Vcc

0 V

When single phase, connect terminals PGA1 and PGA2

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