KROHNE OPTIMASS with MFC 05x EN User Manual
Page 47
Installation and Operating Instructions OPTIMASS
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2.5.2 Inputs / Outputs MFC051
The MFC 051 offers galvanically separated outputs in the non-hazardous area version and intrinsically
safe outputs for the Hazardous area approved version (see Supplementary Installation and Operating
Instructions).
All outputs are passive.
The converter is shipped from the factory with the required output option fitted and configured. These
cannot be changed in the field as the modules are soldered in place. The black covers over the modules
are necessary to prevent spurious signals as the galvanic separation is done optically.
To view the actual outputs fitted, go to Fct. 4.1 I/O FITTED. The connection will also be indicated on an
adhesive label in the lid of the terminal compartment.
Option
Function
1
2 x 4-20 mA-HART (outputs galvanically separated from each other)
2
1 x 4-20 mA, 1 X Pulse-HART
3
1 x 4-20 mA, 1 x Control input-HART
4
1 x 4-20 mA, 1 x Status output-HART
5
1 X 4-20 mA, 1 X Profibus PA
Note
HART
®
is available on the first 4...20 mA output except for option 5, where Profibus is available.
As the outputs are passive, HART
®
can be used in a multi-drop loop or as a point-to-point communication.
Output Option 1
18 … 30 V DC
0 V DC
18 … 30 V DC
0 V DC
Passive current output
Output Option 2
In addition to the 1
st
4...20mA, a passive pulse output can be wired as shown.
Pulse
0 V DC
250 R
300 R
5 … 30 V DC
250 R