Technical information

18
Electrical connection - i.s. terminals
Terminal assignment
L00-NRF590-04-00-08-en-018
Terminal Designation Meaning
16 D+ + RTD drive
1)
1) These terminals should be left unconnected if RTD has not been selected in feature
40 of the product structure.
17 S+ + RTD sense
1
18 S- - RTD sense
1,2)
2) For a 3-wire RTD, terminals 18 and 19 should be connected together.
19 D- - RTD drive
1,2
20 OPT1 Discrete Input 1
21 OPT2 Analog Input 1 (4 ... 20 mA)
22 OPT3 Discrete Input 2
23 OPT4 Option +24 V
24 H+ +HART comm.
3)
3) These terminals share the same HART signal.
25 H- -HART comm.
4)
4) These terminals share the same i.s. 0 V signal.
26 H+ +HART comm.
3
27 H- -HART comm.
4
28 H+ +HART comm.
3
29 H- -HART comm.
4
30 P+ + i.s. power for FMR S-series
3
(terminal 2 of FMR)
31 P- - i.s. power for FMR S-series
4
(terminal 1 of FMR)
24V
mA
NRF590 - i.s. terminal board
RTD
HART
sensor
Internally
interconnected
as one HART
fieldbus loop
For Micropilot
S-series only!