Instruction Manual

4 ELECTRICAL CONNECTIONS
26
UFM 530 HT
www.krohne.com 12/2013 - 4002393201- HB UFM 530 HT R02 en
Ex NAMUR version
Figure 4-8: Terminals for Ex instrument with NAMUR
Terminal Function Specification
1 Neutral mains power supply 100...240 VAC, 24 VAC or 24 VDC
2 Live mains power supply 100...240 VAC, 24 VAC or 24 VDC
3 Combined current output (I) and digital
input (C). Current output (I) includes
HART
®
-Communication.
Current output (I): I ≤ 22 mA,
R
load
≤ 680 Ω, U
max
= 15 VDC.
Digital input (C): low = 0...5 VDC,
high = 15...32 VDC (will be switched off
when current output activated).
4 Pulse / frequency output I
max
= 150 mA, U
max
=32VDC/ 24VAC,
maximal frequency = 2 kHz.
5 Ground for pulse output
6 Analog input 1, for temperature
measurement.
0(4)...20 mA, R
i
= 58,2 Ω, fuse = 50 mA.
7 Common ground
INFORMATION!
The current output of the UFC 030 F-EEx can be set according to NAMUR NE43. The current
output will go either to 3.6 or 21.5 mA in case of failure indication.