Lenze 9300 - Sample and Hold Function (S&H)

Function library
7-257
L
EDSVS9332P-D21 EN 3.0
7.5.74 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. 7-208 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
• With S&H1-LOAD = HIGH the signal at the input S&H1-IN is switched to the output
S&H1-OUT.
• 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:
• Keep S&H1-LOAD to LOW level when disconnecting the supply voltage (mains, DC bus or
terminal 59).
• Keep S&H1-LOAD to LOW level when connecting the supply voltage (mains, DC bus or
terminal 59).
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