Yaskawa Matrix Converter User Manual download pdf (Page 148)

5-48

L7: Torque Limits

Parameter

Number

Name

Description

Setting

Range

Default

Change

during

Run

Control

Methods

MEMO-

BUS

Register

Page

Display

V/f

Open

Loop

Vector

Flux

Vector

L7-01

Forward Torque

Limit

Sets the torque limit value as a percentage

of the motor rated torque. Four individual

quadrants can be set.

0 to 300 200% No No A A 4A7H

4-17

6-40

Torq Limit Fwd

L7-02

Reverse Torque

Limit

0 to 300 200% No No A A 4A8H

4-17

6-40

Torq Limit Rev

L7-03

Forward Regener-

ative Torque

Limit

0 to 300 200% No No A A 4A9H

4-17

6-40

Torq Lmt Fwd

Rgn

L7-04

Reverse Regener-

ative Torque

Limit

0 to 300 200% No No A A 4AAH

4-17

6-40

Torq Lmt Rev

Rgn

L7-06

Torque Limit Inte-

gral Time Con-

stant

Sets the torque limit value as a percentage

of the motor rated torque. Four individual

quadrants can be set.

5 to

10,000

200

ms

No No A No 4ACH

4-17

6-40

Torq Limit Time

L7-07

Torque Limit

Control Method

Selection During

Accel/Decel

Selects the method of torque limit con-

trols during accel/decel

0: Proportional Controls (uses integral

controls at fixed speeds).

1: Integral Controls

Adjustment is not normally required.

With applications that require torque lim-

its during accel/decel, integral controls

(setting value = 1) are used when torque

controls take precedence. When torque

limit is applied to the motor, accel/decel

time may increase and motor speed may

not run at the indicated speed reference.

0, 1 0 No No A No 4C9H

4-17

6-40

Torque Limit Sel

Output torque

Positive torque

Reverse

Negative torque

No. of

motor

rotations

Forward

Regenerative

state

Regenerative

state

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