Burkert 8205 Notice D'utilisation page 67

3 INSTALLATION
Connecting the 4-20 mA current output to a PLC
The 4-20 mA output of the pH controller 8205 can be connected to a PLC. Depending on
the PLC type, position the "source/sink" switch
Only manipulate the switch when the device is not powered.
4-20 mA
+
-
I
Switch :
see Fig. 3.5
CURRENT
SOURCE SINK
Iout L+ L-
1
2
PE
3
T
4 Fluid potential
(third electrode)
REL:230VAC/3A
5
PE
TRANS:5..30VDC/100mA
+
+
+
Connection in sourcing mode and
connection example for the alarm relay
Fig. 3.8
Connecting the 4-20 mA current output to a PLC
300 mA
+
-
PE
Supply
12..30Vdc
PT1000
PE
-
PH CONTROLLER 8205
properly (see Fig. 3.5).
4-20 mA
+
(*)
-
Switch :
see Fig. 3.5
CURRENT
SOURCE SINK
PE
REL:230VAC/3A
TRANS:5..30VDC/100mA
+
+
Connection in sinking mode
E-17-
300 mA
I
Iout L+ L- PE
1
Supply
2
12..30Vdc
PT1000
3 T
PE
4 Fluid potential
(third electrode)
5
PE
+
-
(*)