Technical information

17
Connection of the auxiliary
energy
The Tank Side Monitor can be AC or DC supplied, depending on the installed power supply board. The AC
supply needs to be connected to the terminals marked L/+ (Line) and N/- (Neutral), corresponding with the
phase/line and neutral wire. DC supply can be connected to the same terminals, for which it is necessary to
connect the positive (+) to the terminal marked (L/+), and the negative to the terminal marked (N/-).
Connection of the non-i.s.
4 ... 20 mA analogue input
Depending on the selected fieldbus communication board, a non-i.s. self-powered or loop powered analogue
transmitter can be connected. The analogue signal for the loop powered transmitter can be connected to the
terminals 14 (-) and 15 (+24 Vdc). The maximum supply current for the analogue transmitter is limited to 24
mA. The analog signal for a self powered transmitter should be connected to terminals 11 or 12 and 14.
L00-NRF590-04-00-08-en-019
Connection of the non-i.s.
4 ... 20 mA analogue output
For all field communication boards except the Modbus Option without analog in/output, a
non-i.s. 4.. .20mA output is available. Via Software settings, this analogue output can be connected to any
parameter in the Tank Side Monitor. The analogue output is available between terminals
13 (+) and 12 (-). From SW 02.01.xx onwards, an additional HART signal is available at terminal 13.
Connection of the discrete in
and output
The Tank Side Monitor can be equipped with up to 2 discrete I/O modules. These modules can be used for
interfacing to non-i.s. discrete in- or outputs. Input and output voltage and current ranges depend on the type
of selected module installed in the relevant I/O slot. Terminals 4 and 5 correspond to discrete I/O slot A,
terminals 6 and 7 correspond to discrete I/O slot B. For details on available I/O modules, see Page 32.
L00-NRF590-04-00-08-en-004
!
Note!
250 VAC is the maximum load that can be connected.
14
Loop powered (passive)
e.g.
FMR
+
15
-
11/12
self powered (active)
e.g.
FMR
+
14
-
+
–
+
–
L
N
L
N
4 5 A
6 7 B
4 5 A
6 7 B
4 5 A
6 7 B
4 5 A
6 7 B
DIGITAL
AC OUTPUT
DIGITAL
DC OUTPUT
DIGITAL
AC INPUT
DIGITAL
DC INPUT
LOAD
LOAD
AC SUPPLY
DC SUPPLY
AC SUPPLY
DC SUPPL
Y