
14
FLEX Ex 8 Output and HART Analog Modules
Publication
1797-IN003J-EN-P - August 2017
Outputs
Each output channel can operate an analog field device.
Do not apply any
nonintrinsically safe signals to these modules.
When using an intrinsically safe electrical apparatus according to EN50020,
the European Community directives and regulations must be followed.
The channels in these modules are electrically connected to each other.
Flexbus
Bus
uC
+V
-V
+
-
Power
Supply
4…20 mA
Actuator
4…20 mA
Valve
41441
I
F
1797-OE8
45
Ω
160
Ω
15.5V
Flexbus
Bus
uC
+V
-V
+
-
Power
Supply
4…20 mA
Actuator
4…20 mA
Valve
43849
I
F
1797-OE8H/B
HART
Modem
21.6V
250
Ω
45
Ω