Lenze EVS9332xK - Manual (Page 283)

Function library
Function blocks
3.2.79 Position memory (PSAVE)
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EDSVS9332K−EXT EN 4.0
3.2.79 Position memory (PSAVE)
One function block (PSAVE1) is available.
Purpose
Storage (mains−failure protected) of positions (master value and/or actual value) and comparison to
the actual values. After mains connection it can be checked whether the master value position or the
actual value position have changed. This is however only reasonable when using absolute value
encoders (resolvers or SinCos encoders).
P S A V E 1
P S A V E - M - H I
P S A V E - A C T P O S
P S A V E - O N
P S A V E - S A V E
C T R L P S A V E - M - L O
C 1 4 3 4 / 1
C 1 4 3 5 / 1
C 1 4 3 4 / 2
C 1 4 3 5 / 2
C 1 4 3 7 / 1
C 1 4 3 6 / 1
C 1 4 3 6 / 2
C 1 4 3 7 / 2
C 1 4 3 0 / 1
C 1 4 3 0 / 2
C 1 4 3 1
P S A V E - M - D I F F
P S A V E - M - S A V E
P S A V E - M P O S P S A V E - A C T - H I
P S A V E - A C T - L O
P S A V E - A C T - D I F F
P S A V E - A C T - S A V E
Signal Source Note
Name Type DIS DIS format CFG List
PSAVE1−ON d 1435/1 bin 1434/1 2 HIGH = Comparison of inputs MPOS/ACTPOS with values saved and
output of difference
PSAVE1−SAVE d 1435/2 bin 1434/2 2 HIGH =
PSAVE−MPOS ph 1437/1 dec[inc] 1436/1 3 Input for master position
PSAVE−ACTPOS ph 1437/2 dec[inc] 1436/2 3 Input for actual position (e.g. rotor position)
PSAVE−M−HI d − − − HIGH = Input value > stored position
PSAVE−M−LO d − − − HIGH = Input value < stored position
PSAVE−ACT−HI d − − − HIGH = Input value > stored position
PSAVE−ACT−LO d − − − HIGH = Input value < stored position
PSAVE−M−DIFF ph − − − Position difference = Stored position − input
PSAVE−M−SAVE ph − − − Stored position of master drive
PSAVE−ACT−DIFF ph − − − Position difference = Stored position − input
PSAVE−ACT−SAVE ph − − − Stored position of cam drive
Function
l Store position value
l Compare actual position with values stored
l Output of status signals
3.2.79.1 Store position value
l With PSAVE−SAVE = HIGH data from the inputs PSAVE−MPOS and PSAVE−ACTPOS is
accepted and output at PSAVE−M−SAVE and PSAVE−ACT−SAVE. The reading and writing
processes are repeated cyclically (1000 1s ).
l The input data is stored if a H
³ L edge occurs at PSAVE−SAVE, i.e. they are available even if
the controller has been disconnected from the mains.
l When the mains is switched on again, the data is transferred to the main memory of the
controller and output at PSAVE−M−SAVE and PSAVE−ACT−SAVE.