12
Supply and signal circuit 4 ... 20 mA
!
Note!
Connect the transmitter via a two-wire cable.
The second current output is an option (see "Ordering information").
4 ... 20 mA / Hart
®
!
Note!
For safe communication via the HART protocol and for compliance with the NAMUR NE 21, use a two-wire
cable shielded on each end.
PROFIBUS PA and FOUNDATION Fieldbus
!
Note!
Always use a fieldbus cable that is grounded on both sides (device and PCS).
You can connect Profibus and FOUNDATION Fieldbus devices in three ways:
1. Shielded two-wire cable, "Hard grounding"
(generally to be preferred to capacitive grounding)
2. Shielded two-wire cable, "Capacitive grounding" (shield grounded in device via a capacitor, accessory
"C module" necessary)
Use it, if there is a risk of high equalizing currents.
3. Using the fieldbus connection socket (accessories)
a0005037
View in device (CPU module)
a0005038
Wiring diagram
+
–
133
134
4 ... 20 mA
+
–
233
234
4 ... 20 mA
Out 1
Out 2
a0002365
View in device (CPU module)
a0003100
Wiring diagram
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