9.5.2 Configuration and calibration
When a BA568E Counter is supplied with an
optional 4/20mA output the configuration menu is
extended as shown in Fig 16. The 4/20mA output
sub-menu is accessed via the
4-20 oP
function.
The 4/20mA output sub-menu allows the 4/20mA
output to be controlled by the rate or the total
display.
Fig 16 4/20mA output configuration sub-menu
9.5.3 Access
4/20mA
output sub-menu:
4-20 oP
Access the BA568E Counter configuration menu as
described in section 5.2. Using the
&
and
*
push
buttons scroll though the menu until
4-20 oP
is
displayed, pressing
(
will then access the 4/20mA
output sub-menu which is shown in Fig 16.
9.5.4 Enable 4/20mA output:
EnbL
This function allows the 4/20mA output to be
disabled or enabled without altering any of the
4/20mA output parameters. Using the
&
or
*
push button select
EnbL
in the
4-20 oP
sub-menu
and press
(
to reveal the existing setting
on
or
oFF
.
The function can be changed by pressing the
&
or
*
push button followed by the
)
button to return
to
EnbL
prompt.
Note:
When the 4/20mA output is disabled by
selecting
oFF
, the output is a constant
3.5mA irrespective of the instrument
display.
9.5.5 Select rate or total source:
4-20tYPE
The 4/20mA output current can represent the
BA568E Counter’s rate or total display and this
should be defined before any other 4/20mA current
output functions are configured.
Using the
&
or
*
push button select
4-20tYPE
in
the 4/20mA output sub-menu and press
(
to reveal
the existing setting
totAL
or
rAtE
. The function can
be changed by pressing the
&
or
*
push button
followed by the
)
button to return to
4-20tYPE
prompt.
Note:
If the controlling source of the 4/20mA
output is changed i.e. from rate to total, the
4/20mA output will be disabled and the
output will be a constant 3.5mA
irrespective of the instrument display.
The 4/20mA output must always be re-
enabled and reconfigured following the
controlling source being changed.
9.5.6 Display which corresponds to 4mA
output:
4
.
000
The BA568E Counter display which corresponds to
a 4.000mA output current is defined by this function.
Using the
&
or
*
push button select
4
.
000
in the
4/20mA output sub-menu and press
(
to reveal the
existing rate or total display with one digit flashing.
The required display can be entered using the
&
or
*
push button to adjust the flashing digit and
the
(
button to transfer control to the next digit.
When set as required press
)
to enter the value
and return to the
4
.
000
prompt in the 4/20mA output
sub-menu.
9.5.7 Display which corresponds to 20mA
output:
20.000
The BA568E Counter display which corresponds to
20.000mA output current is defined by this function.
Using the
&
or
*
push button select
20
.
000
in the
4/20mA output sub-menu and press
(
. to reveal
the existing rate or total display with one digit
flashing. The required display can be entered using
the
&
or
*
push button to adjust the flashing digit
and the
(
button to transfer control to the next
digit. When set as required press
)
to enter the
value and return to the
20
.
000
prompt in the 4/20mA
output sub-menu.
Note:
If the BA568E Counter and the 4/20mA
current sink output are powered from
separate supplies, the 4/20mA output
current will continue to flow when the
BA568E Counter supply fails or is turned
off. Powering both from a common supply
eliminates this effect.
33
Summary of Contents for BA568E
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