Decelerate to stop – Yaskawa Matrix Converter User Manual

Page 177

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6

-12

* 0 or 1 for Flux Vector Control.

„

Decelerate to Stop

If the Stop Command is input (i.e., the Run Command is turned off) when b1-03 is set to 0, the motor deceler-
ates to a stop according to the deceleration time that has been set (default: C1-02 (Deceleration Time 1)).

If the output frequency when decelerating to stop falls below b2-01, DC Injection Braking will be applied
using the DC current set in b2-02 only for the time set in b2-04.

For deceleration time settings, refer to page 6-17, Setting Acceleration and Deceleration Times.

Fig 6.12 Decelerate to Stop

b2-04

DC Injection Brak-
ing Time at Stop

Sets the time length of DC injection braking
at stop in units of 0.01 seconds.
1: When b1-03 = 2, actual DC Injection time

is calculated as follows: (b2-04)

× 10 ×

(OutputFreq) / (E1-04)

2: When b1-03 = 0, this parameter deter-

mines the amount of time DC Injection is
applied to the motor at the end of the decel
ramp.

3: This should be set to a minimum of 0.50

seconds when using HSB. This will acti-
vate DC injection during the final portion
of HSB and help ensure that the motor
stops completely.

0.00

to

10.00

0.50 s

No

A

A

A

DCInj Time @Stop

Parameter

Number

Name

Description

Setting

Range

Default

Change

during

Run

Control Methods

Display

V/f

Open

Loop

Vector

Flux

Vector

Decelerates to stop at
deceleration time

Output frequency

Run command

on

off

DC injection brake time

when stopping (b2-04)

DC injection brake

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