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Function Blocks
XFR Bumpless Analog Transfer Switch Function Block
436
HC900 Hybrid Control Designer Function Block Reference Guide
Revision 11
2/07
XFR Bumpless Analog Transfer Switch Function Block
Description
The
XFR
label stands for
Bumpless Analog Transfer Switch
.
This block is part of the
Signal Selectors
category.
Function
Provide “bumpless” switching between two analog input values (X, Y) that is triggered by a digital input
signal (*SY). When switched, the output ramps to the new value at a specified rate.
The rate at which the output
(OUT) changes to a switched value (Y or X) is set by YRATE and XRATE
configuration values, respectively.
•
If SY is switched to ON, then:
OUT changes to Y value at YRATE
.
•
If SY is switched to OFF, then:
OUT changes to X value at XRATE
.
•
When OUT reaches the selected target input, OUT tracks the selected input (until SY changes).
Input
X
= First analog value.
Y
= Second analog value.
SY
= Switch to Y command digital signal
Output
OUT
= Selected Value
Block properties
Double click on the function block to access the function block properties dialog box.
Содержание HC900
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