
11
3.7
Electrical connections
The ND9200H is powered by a standard 4–20 mA cur-
rent loop that also functions as a carrier to the HART
communication.
The input signal cable is led through a M20 x 1.5 (E1)/
1/2 NPT (E2) cable gland. Connect the conductors to the
terminal strip as shown in Fig. 7. It is recommended that
the earthing of the input cable shield be carried out from
the DCS end only. The terminal 'SHD' (see Fig. 7) allows
user to connect the input cable shield also to the
ND9200H.
The position transmitter is connected to 2-pole terminal
PT as shown in Fig. 7. The position transmitter needs an
external power supply. The ND9200H and the position
transmitter circuits are galvanically isolated and with-
stand a 600 VAC voltage.
NOTE:
The ND9200H equals a load of 475
Ω
in the current
loop.
Fig. 7
Terminals
HART connection
Fig. 8
Control wiring
HAZARDOUS LOCATION
Control
system
Uout max 30 V
Control
system
Uout max 30 V
ND9200H_T
SHD
P
osition
T
ransmitter
NONHAZARDOUS LOCATION
Содержание ND9200H
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