mru SWG100 BIOEX, User Manual, Page: 89 / 150

MRU GmbH SWG 100 BIO Ex User Manual
Page
89
of
150
10.5. Configuration of the external control (Option: IO module)
This feature requires an I/O module (optional) and the function must be activated
.
This feature can be used for the external control of the analyzer. With the help of
the external control follow operations can be done:
•
Externally controlled sampling point selection,
•
Stand-by.
The commands will be given by a 4-bit binary number, which will be built through
four external signals. The pins for the signal are shown in the sketch below. It exists
two different types to set the four pins:
•
Potential free relay contacts.
•
4-20 mA signal inputs.
•
Through one 4...20mA input.
The settings-menu can be found at the path:
E
XTRAS
/G
ENERAL SETTINGS
-> E
XTERNAL CONTROL
.
The user can set three different types for the external control. The types can be
found at the sketch below.
Connection of the external control via relay contact
This feature can be used for externally controlled sampling point selection, zeroing
and stand-by, using external potential free relay contacts, see also diagram in $4.4
The relay contacts build a 4-bit binary number:
RC4 - RC3 - RC2 - RC1 open=0,
closed=1.
Let us tell this number 'status number'.
- - -
-
RC4 RC3 RC2 RC1