BEKA BA678C, Руководство пользователя, Страница: 7 / 27

5.2 Installation Procedure
a. Insert the BA678C into the instrument panel
cut-out from the front of the panel with the
sealing gasket positioned as shown in Fig 4.
b. Fix panel mounting clips to opposite sides of
the instrument and tighten. Recommended
tightening torque is 22cNm (1.95lbf in). Do not
over tighten . Four clips are required to
achieve an IP66 seal between the instrument
enclosure and the panel.
c. Connect the panel wiring to the rear terminal
block as shown in Fig 4. To simplify
installation, the terminals are removable so
that panel wiring can be completed before the
instrument is installed.
Fig 4 Installation and terminal connections
5.3 EMC
The BA678C complies with the requirements of the
European EMC Directive 2014/30/EU. For specified
immunity, all wiring should be in screened twisted
pairs with the screens earthed at one point.
6. CONFIGURATION
The BA678C Indicating Temperature Transmitter may
be configured and calibrated via HART

digital
communication, or configuration may be performed
using the menu accessed via the front panel push
buttons see Fig 3.
Configuration and calibration via HART

may be
performed using a portable configurator connected
directly to the BA678C or proprietary configuration
software operating on a personal computer may be
used.
In addition to the configuration functions
available via the transmitter push buttons, HART

communication enables loop calibration and custom
linearisation to be performed. Details of the HART

communication are contained in the BA47X/67X
Indicating Temperature Transmitter HART

Interface
Guide which may be downloaded from
www.beka.co.uk/manuals
6.1 Configuration menu
Throughout this manual the BA678C push buttons
are identified
P E ▼ ▲ and legends displayed by
the transmitter are shown within inverted commas
e.g. ‘CAL’ and ‘dEG’.
Section 6.1.2 contains a
summary of each configuration function including a
cross reference to a more detailed description.
The functions contained in the configuration menu
vary depending upon the transmitter input selected,
see Figs 5, 6 & 7.
When the transmitter is being configured, the
transmitter 4/20mA output current is locked at the
value prior to entering the configuration menu.
When optional alarms are fitted additional functions
are added to the configuration menu which are
described in section 9.3.
6.1.1 Access
Access to the configuration menu is obtained by
operating the
P and E buttons simultaneously. If the
transmitter is not protected by an access code the
first parameter 'InPut’ will be displayed.
If the
transmitter is protected by an access code, ‘CodE’
will be displayed first. Pressing
P will allow the four
digit security code to be entered digit by digit using
the
▼ or ▲ button to adjust the flashing digit and P to
move control to the next digit. When the correct code
has been entered, pressing
E will cause the first
parameter ‘InPut’ to be displayed. If an incorrect
code is entered, or no button is pressed for ten
seconds, the transmitter will automatically return to
the operating mode.
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