Lenze 9400 Manual de usuario descargar pdf (Pagina 380)

11 Basic drive functions

11.1 General information

380

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

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11.1.6 Start acceleration/acceleration reduction when the basic function changes

In order to make the transitions during the changeover between the single basic functions as jerk-

free as possible, i.e. preventing acceleration steps, the current setpoint acceleration is used as

starting value for the new basic function (see the following table).

Reduction of the start acceleration

Depending on the acceleration and S-ramp time parameterised in the basic function, the start

acceleration is reduced.

The following applies for software versions lower than V7.0:

• The start acceleration is reduced with the maximum jerk of the old or new basic

function.Setting the S-ramp time

( 382)

to

from

Position, speed

or torque

follower

Manual jog Homing Positioning Error/controller

not ready

Stop Quick stop*

Position follower 0AAA0A0

Speed follower

0AAA0A0

Torque follower 0000000

Manual jog

0 - BB0B0

Homing

0B-B0B0

Positioning 0BB-0B0

Error/controller

not ready

0000

-00

Stop

0BBB0 -0

Quick stop

*0AAA0A-

Legend:

0 The start acceleration is defined with "0", thus no acceleration reduction is required.

A • Acceleration value is generated from the differentiation and filtering (C02562) of the active

setpoint speed.

• Jerk = Maximum value from transition jerk (defined via C02545

) and jerk of the "new" profile

data.

B • Acceleration value is taken from the setpoint generator (e.g. profile generator).

• Jerk = maximum value from the jerk of the "old" and "new" profile data.

* Also quick stop by trouble

 Note!

Very low jerks cause very high speeds!

See also the following chapter "Setting the S-ramp time

". ( 382)

Since this behaviour is mostly not wanted or expected, the acceleration is reduced from

software version V7.0 as described in the following section.

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