30
Resetting depending on the operating mode (Page 62)
31
Activating reset of protection / errors in manual mode (Page 63)
In pushbutton mode (bit 4 = 0) the automatic commands in automatic mode are latching, in
other words
OpenAut
and
CloseAut
can be reset to zero after changing the control. In manual
and local modes, however, the automatic commands are not saved and in the absence of
automatic commands the automatic control is tracked.
In switching mode (bit 4 = 1), control is selected with the OpenAut static signals. If input
OpenAut
is not set the valve is closed. Control via
CloseAut
is not needed. If the "Activate
command reset for control" function (bit 3 = 1) is also activated, the
OpenAut
input is reset to
the neutral position after evaluation in the block.
Note
Switching mode can only be used for configuration with the auxiliary valve.
There are also the following
Feature
bits in the
Feature2
parameter:
Bit
Function
0
Not used
1
1 = An alarm module is available whose configuration (
AFct
) and limits (
A1
/
A2
) can be read by
the device
2
Not used
3
1 = The values of
Tim
(monitoring time for control deviation) and
Lim
(trigger threshold for
control deviation) are read out of the Sipart PS2, written into the Sipart PS2, and visualized in the
faceplate
4
1 = The Sipart PS2 has a firmware version < 5.00.00
5
Not used
6
Separate evaluation of bypassed AND simulated interlock signals
7-31 Not used
For more information about the feature bits please refer to the APL online help.
Displaying auxiliary values
This block provides the standard "Displaying auxiliary values" function that is described in the
APL Online Help.
Alarm delays with two time values per limit pair
This block has the standard alarm delay function "Two time values per limit pair" for limit
monitoring of the feedback and limit monitoring of the manipulated variable difference. This
function is described in the APL Online Help.
The function here relates solely to the limits of the manipulated variable difference.
Digital feedback from the readback value
This block forms a digital position feedback for "Closed" and "Open" from the configured
operating points of the position feedback values
PosDiClose
and
PosDiOpen
.
SIPART PS2 HART
7.1 SipPS2HA
SITRANS Library for PCS 7
206
Function Manual, 05/2019, A5E35351976-11
Summary of Contents for SITRANS PCS 7
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Page 418: ...SITRANS P 10 2 SitraPDr SITRANS Library for PCS 7 418 Function Manual 05 2019 A5E35351976 11 ...
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