Lenze EVS9332xP Uživatelský manuál stáhnout pdf (Strana 276)

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101

Function library

Function blocks

3.5.57 Sample and hold function (S&H)

3−248

EDSVS9332P−EXT DE 2.0

3.5.57 Sample and hold function (S&H)

Purpose

The FB can save analog signals. The saved value is also available after mains switching.

C0572

S&H1

S&H1-OUT

S&H1-IN

C0573

S&H1-LOAD

C0570

C0571

S&H

Fig. 3−196 Sample and hold function (S&H1)

Signal

Source Note

Name Type DIS DIS format CFG List Lenze

S&H1−IN a C0572 dec [%] C0570 1 1000

S&H1−LOAD d C0573 bin C0571 2 1000 LOW = save

S&H1−OUT a − − − − −

Function

l With S&H1−LOAD = HIGH the signal at the input S&H1−IN is switched to the output

S&H1−OUT.

l With S&H1−LOAD = LOW the output S&H1−OUT is disconnected from the input S&H1−IN and

outputs the value which was last valid.

Saving in the case of mains disconnection:

l Keep S&H1−LOAD at LOW level when disconnecting the supply voltage (mains, DC bus or

terminal 59).

l Keep S&H1−LOAD at LOW level when connecting the supply voltage (mains, DC bus or

terminal 59).

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