Siemens DI-8112 - Page 77

Standard I/O Modules
SICAM A8000 Series, SICAM I/O Modules Unrestricted 77
DC8-012-2.06, Edition 09.2019
2.10.5 Block Diagram
Danger
The
connectors X1 and X2 may be detached or attached in de-energized state only!
Warning
The inputs of the connectors X1 and X2
must not be connected directly with a mains supply circuit!
Note
Within the signal inputs exists only functional
insulation. Therefore, the use of different current circuits is
not permitted.
Caution
Direct curre
nts cannot be measured with CM-8820.
Note
T
ake account of the direction of current flow when connecting the current measuring inputs. With inverse
connection, the measured values are inverted and receive a negative sign.
CM-8820
1
2
3
4
5
6
7
8 9
10
X1
DN
C
I3-
I
3+
I2
-/IN
-
I
2-
/
IN
+
I
1-
I1
+
DNC
DN
C
1 2
3
4
5
6
I
3_N
I3_P
I2_
N
I2_
P
I
1_N
I
1_P
X2
R
R
R
FE S
hie
ld
reinforced insulation