Yaskawa G7 Drive User Manual

Page 175

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5

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L3-02

Stall
Prevention
Level
During
Acceleration

This function is enabled when
L3-01 is "1" or "2".
Drive rated current is 100%.
Decrease the set value if
stalling or excessive current
occurs with factory setting.

0

to

200

150%

No

A

A

A

No

No

490H

StallP
Accel Lvl

L3-03

Stall
Prevention
Limit
During
Acceleration

Sets the lower limit for stall
prevention during acceleration,
as a percentage of the Drive's
rated current, when operation is
in the frequency range above
E1-06 (constant power region).

0

to

100

50%

No

A

A

A

No

No

491H

StallP CHP
Lvl

L3-04

Stall
Prevention
Selection
During
Deceleration

When using a braking resistor,
use setting "0". Setting "3" is
used in specific applications.
0: Disabled - The Drive

decelerates at the active
deceleration rate. If the load
is too large or the
deceleration time is too
short, an OV fault may
occur.

1: General Purpose - The Drive

decelerates at the active
deceleration rate, but if the
main circuit DC bus voltage
reaches the stall prevention
level (380/760Vdc),
deceleration will stop.
Deceleration will continue
once the DC bus level drops
below the stall prevention
level.

2: Intelligent - The active

deceleration rate is ignored
and the Drive decelerates as
fast as possible w/o hitting
OV fault level.

Range: C1-02 / 10.
3: Stall Prevention w/ Braking

Resistor - Stall prevention
during deceleration is
enabled in coordination with
dynamic braking.

0 to 3

*

1

No

Q

Q

Q

Q

Q

492H

StallP
Decel Sel

Parameter

Number

Name

Description

Setting

Range

Factory

Setting

Change

during

Operation

Control Methods

MODBUS

Register

Display

V/f

V/f

with

PG

Open

Loop

Vector

1

Flux

Vector

Open

Loop

Vector

2

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