Schneider Electric Multi-Loader Dokumentacja Pobierz pdf (Strona 39)

Functions (continued)

Altivar

variable speed drives

Quick start

The quick start function aims to overcome the problems associated with the high

regulation gains that are necessary at start-up but inappropriate for regulation.

The drive accelerates linearly on a ramp (ACC) until its speed reaches the

conguredquickstartthreshold(SFS).

Once it reaches this threshold (SFS), PID regulation begins.

ACC

SFS

HSP

Quick start

Variable pump frequency

HSP: High speed

SFS: Quick start threshold

ACC: Acceleration ramp time

Automatic restart on underload and overload faults

Generally, the user can set a parameter to activate automatic restarting after a fault,

if the cause(s) of the fault no longer exist(s).

In the case of underload and overload faults, a delay which can be set between 1 s

and 6 min 16 s can be used to delay the restart.

PID reference adjustment range for the end user

ThisfunctionallowstheendusertoadjustthePIDregulatorreferencetoincreaseor

reducetherateofow.

AdjustmentbytheuseriseitherbymodifyingthePIDregulatorreferenceparameter,

or by manual control of the navigation button, accessible on the drive's front panel.

The installer has access to two PID reference limit parameters, which can be used to

deneauser'srangeofaction.

Incompatible functions

Application functions can be assigned to the same logic input, in which case one

logic input enables a number of functions (for example, direction of operation and

ramp time switching).

A check must be carried out to ensure that the functions are compatible:

Direction of operation and 2-wire control: Forward operation can only be

assigned to LI1.

Direction of operation and 3-wire control: Forward operation can only be

assigned to LI2.

Automatic restart:Thisfunctionrequiresthecongurationof2-wirelevelcontrol.

Changingthecontroltypecongurationdeactivatesautomaticrestarting.

Automatic catching of a spinning load with speed detection: Incompatible with

continuousstandstillDCinjection.Conguringthisfunctiondeactivatesautomatic

catching of a spinning load.

Introduction:

page 8

Specications:

page 10

References:

page 14

Dimensions:

page 18

Connections:

page 22

Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com

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