Lenze 9400 Manual de usuario descargar pdf (Pagina 535)

Lenze · Servo-Inverter 9400 HighLine · Reference manual · DMS 10.0 EN · 11/2013 · TD05/06 535

11 Basic drive functions

11.12 Brake control

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

11.12.2.7 Torque feedforward control via ramp function

This function extension is available from software version V3.0!

The brake control additionally offers the possibility of establishing the required torque of the drive

when the brake is released via a parameterisable ramp function.

Settings

1. Go to C02600

and set the acceleration time for the feedforward control.

2. Go to C02601

and select the reference for the acceleration time:

• Selection "0: Motor reference value":

The acceleration time refers to the generation of the motor reference torque (C00057/2

), i.e.

the acceleration is constant.

• Selection "1: Starting current value":

The acceleration time refers to the torque requested, i. e. the acceleration time is constant.

Sequence

[11-41] Sequence of torque feedforward control via ramp function

 Request of basic function "Speed follower"  open brake

 Torque is generated up to the setpoint via ramp function

 Brake is triggered for being opened

 After brake opening time has elapsed, the basic function "Speed follower" is activated

 C02590

: Brake opening time

t

t

Enable speed follower

t

Speed

Speed follower active

t



3

2

t

Torque

0

1

BRK_bReleaseBrakeOut

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