![Fuji Electric FCX-AII-VG Series Скачать руководство пользователя страница 78](http://html1.mh-extra.com/html/fuji-electric/fcx-aii-vg-series/fcx-aii-vg-series_instruction-manual_2341971078.webp)
75 TN5FCXA2VG-E
Field device
To junction
terminal or
instrument
room
To HHC
Explosion-proof area
Non-explosion-proof area
Zener barrier
Instrument room
Terminal block
DC power supply
16.1 to 45V DC
Junction terminal
Fuji HHC
Fuji HHC
Note) See 7.2 “Power voltage
and load resistance.
Load resistor
250 or more
6.3 Adjustment with Hand Held Commnicator (HHC)
The span adjustment of the transmitter can be done by using the HHC without applying a reference
pressure. Here after you will find the wiring of the HHC to modify the transmitter parameters.
For the use and the start up of the HHC, please refer to the instructions of FXW (HHC).
Remarks :
* The HHC must be on "OFF" position during the connection.
It can't be connected to the junction terminal "CHECK
+
and
-
" of the transmitter.
* The HHC has no polarity. (It is possible to connect either the red or black electrical wire to the
terminals
+
or
-
of the transmitter or on the wires of the loop).
6.3.1 Connection of HHC
The HHC can be connected in any point of the loop.
To communicate with the HHC, a load resistor of 250Ω mini is required.
Refer the following diagram connection of the HHC (hand Held Communicator).
After adjustment of the transmitter, it should be kept energized for about
10 seconds.
In the case of a flameproof transmitter, the HHC can only be connected via
the junction box located outside the hazardous area.
DANGER
In the case of a flameproof transmitter, never connect the HHC to the ter-
minal block of the transmitter in hazardous area installations.
DANGER
INDICATION