Quick Wiring Guide - Endress+Hauser Hart RN221N Manual Del Usuario

5 Quick wiring
guide
"
Terminal assignment
Input (sensor)
with loop power
supply (intrinsically
safe as an option)
Fig. 2: Terminal assignment of RN221N with HART
*) The active current output must always be connected (if no evaluation of the output
current is required, a jumper can be used).
Caution!
A switch marked as a splitter and an overcurrent protector (rated current
 10 A) must be fitted in the cable near the device (easy to reach).
HART
connection sockets
R=250 Ω
DIP1
L+ N-
20...250 V
DC/AC
50/60 Hz
®
diagnosis
Active output
4...20 mA *)
Reset
fault
state
Relay
31