2
Fig 3 Synchronising display from safe area via galvanic isolator
2.5
Certification label information
The certification information label is fitted on the top of the clock. It shows
the model number, ATEX certification information, BEKA associates
address, the year of manufacture and the clock serial number.
Fig 4 Label
3.
INSTALLATION
3.1
Location
The BA369 clock is housed in a robust aluminium enclosure with a Noryl
bezel and elastomeric keypads. The front of the instrument provides IP65
protection and a gasket seals the joint between the instrument enclosure
and the panel. The clock may be installed in any panel providing the
environmental limits shown in the specification are not exceeded. Please
consult BEKA associates if high vibration is anticipated.
Fig 5 shows the overall dimensions of the BA369 and the required panel
cut-out. To achieve an IP65 seal between the clock enclosure and the
panel the smaller cut-out must be used and the clock secured with four
panel mounting clips.
Fig 5 BA369 dimensions
3.2
Installation Procedure
a.
Insert the BA369 into the instrument panel cut-out from the front
of the panel.
b.
Fix panel mounting clips to opposite sides of the instrument and
tighten until the instrument is secure as shown in Fig 6. Four
clips are required to achieve an IP65 seal between the
instrument enclosure and the panel.
c.
For personnel safety connect the case terminal at the rear of the
instrument to a local earth.
d.
If the synchronising facility is being used connect the panel
wiring to the rear terminal block as shown in Figs 1, 2 or 3. To
simplify installation, the terminal block is removable so that
panel wiring can be completed before the instrument is installed.
e.
To extend battery life, when delivered the clock will be switched
off. To activate, press the lower left hand button for about three
seconds which will result in a flashing display indicating that
time and date should be entered. If a time is not entered within
five minutes, the clock will automatically switch off.
3.3
EMC
The BA369 complies with the requirements of the European EMC
Directive 2004/108/EC. For specified immunity the synchonising wiring
should be in screened twisted pairs.
To prevent circulating currents, cable screens should only be earthed at
one point in the safe area.
Fig 6 Installation and terminal connections
4.
ADJUSTMENT & PROGRAMMING
The BA369 clock is adjusted and programmed via the front panel push-
buttons. In normal operation these buttons have the following functions:
Description of push-button functions
Lower
Operating this button
for about 3 seconds turns
left hand
the BA396 clock on.
button
P + E
Operating these buttons simultaneously will enter the
programme menu shown in Fig 7 which allows the display
format, time and date to be entered.
Up
While this button is operated the display will show
seconds.
Down
While this button is operated the display will show the
date.
4.1
Programme functions
Throughout these instructions push-buttons are shown in italics e.g.
P
or
Up
push-button and legends displayed by the clock are shown within
inverted commas e.g. 'dAtE' and 'rSEt'.
Access to the programme menu is obtained by operating the
P
and
E
push-buttons simultaneously. If the clock is not protected by a security
code the first parameter 'SEt' will be displayed. If a security code other
than the default code 0000 has already been entered, the clock will
display 'COdE'. Press
P
to clear this prompt and enter the security code
for the clock using the
Up
or
Down
push-buttons to adjust each digit, and
the
P
push-button to move control to the next digit. If the correct code
has been entered pressing
E
will then cause the first parameter 'SEt' to be
displayed. If an incorrect code is entered, or a push-button is not
operated within five minutes, the clock will automatically return to the
display mode.
Fig 7 shows the programme menu illustrating how to navigate between
functions. A detailed description of each function is contained in the
following sections.
