Schneider Electric Altivar 32 Manuel d'installation télécharger pdf (Page 128)

Configuration Mode (ConF)

128 S1A28692 03/2010

Scaling of the assigned parameter

The scale of the assigned parameter can be adapted in accordance with requirements by modifying the values

of the lower and upper limits by means of two parameters for each analog output.

These parameters are given in %. 100% corresponds to the total variation range of the configured parameter,

so: 100% = upper limit - lower limit For example, [Sign. torque] (Stq) which varies between -3 and +3 times

the rated torque, 100% corresponds to 6 times the rated torque.

• The [Scaling AOx min] (ASLx) parameter modifies the lower limit: new value = lower limit + (range x

ASLx). The value 0% (factory setting) does not modify the lower limit.

• The [Scaling AOx max] (ASHx) parameter modifies the upper limit: new value = lower limit + (range x

ASLx). The value 100% (factory setting) does not modify the upper limit.

• [Scaling AOx min] (ASLx) must always be lower than [Scaling AOx max] (ASHx).

Application example 2

The value of the motor current at the AO1 output is to be transferred with 0 - 20 mA, range 2 In motor, In motor

being the equivalent of a 0.8 In drive.

The [I motor] (OCr) parameter varies between 0 and 2 times the rated drive current, or a range of 2.5 times

the rated drive current.

[Scaling AO1 min] (ASL1) must not modify the lower limit, which therefore remains at its factory setting of

0%.

[Scaling AO1 max] (ASH1) must modify the upper limit by 0.5x the rated motor torque, or 100 - 100/5 = 80%

(new value = lower limit + (range x ASH1).

Upper limit of the assigned parameter

Lower limit of the assigned parameter

New scale

100 %

ASLx

ASHx

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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Schneider Electric Altivar 32 Manuel d'installation Page 128

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