Appendix A
A.1 I/O Connections and Wiring
SITRANS FUH1010 Quick Start
40
Operating Instructions (Compact), 12/2008, CQO:QSG010 Revision A
7%
,R
,R
,R
,R
˖
˖
0)'
0)'
5
/
5
/
9F
9F
5
/
5
/
①
Flowmeter.
④
User 4-20mA Source
②
Barrier.
⑤
To TB2-16 Gnd
③
User 24V
⑥
Output Vc
Isolated 4-20mA Output TB1-1/3 & TB1-2/4
R = 1000 ohms (max) w/o Barriers
R = 320 ohms (max) with Barriers
Vc = Output High and Low
I = 4-20mA
R = Loop wire resistance (both ways) plus User's input load resistance.
4-20mA Analog Output TB1-5 & TB1-6
Do Not 12VDC when Barriers are used.
DO Not Reverse Polarity
Load:
200 ohms without Barrier plus two way wire resistance.
320 ohms with Barrier plus two way wire resistance.
Isolated Status/Alarm or PGEN Outputs
I = 7mA (max)
Rc = Total non-inductive load
Vc output High and Low level for different VC with: R = 4.7K ohms, 0.15 Watt (min)
Vc (VDC
VcH (VDC) min
Vcl (VDC) max
5
3.5
0.1
12
9.6
0.1
15
12.3
0.1
24
20.1
0.1