Endress+Hauser RIA14 - 12.3 Power supply; 12.3.1 Terminal assignment; 12.3.2 Supply voltage; 12.3.3 Voltage drop

RIA14 Technical data
Endress+Hauser 27
12.3 Power supply
12.3.1 Terminal assignment
3
2
1
+
-
loop power
supply
active
passive
Open Collector
loop power
supply
A0051890
 12 Terminal assignment of the field indicator
Terminal Terminal assignment Input and output
+ Measuring signal (+) 4 to 20 mA Signal input
- Measuring signal (-) 4 to 20 mA Signal input
1a, 1b Terminal for further instruments Support terminal
2 Digital limit switch (collector) Switch output
3 Digital limit switch (emitter) Switch output
12.3.2 Supply voltage
Power is supplied via the 4 to 20 mA current loop.
The device may only be powered by a power unit with an energy-limited circuit in
accordance with UL/EN/IEC 61010-1, Section 9.4 and the requirements of Table 18.
12.3.3 Voltage drop
Voltage drop < 3.6 V at 3 to 22 mA
Max. voltage drop < 6 V at max. short-circuit current 200 mA
12.3.4 Terminals
Cables up to 2.5 mm
2
(14 AWG) max. plus ferrule