BEKA Advisor A90-SS, Manual

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7.4.4 4/20mA enable:
EnbL
This function allows the 4/20mA output to be
enabled or disabled without altering its calibration.
To enable or disable the 4/20mA output select
EnbL
from the
4-20op
sub-menu and press
(
which will reveal the current setting
on
or
oFF
.
The function can be changed by pressing the
&
or
*
button followed by the
)
button to return to
the
4-20op
sub-menu. When disabled the output
current is a constant 3.5mA irrespective of the
meter display.
7.4.5 Display which corresponds to 4mA
output:
4 . 000
The A90-SS meter 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 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.
7.4.6 Display which corresponds to 20mA
output:
20 . 000
The A90-SS meter display which corresponds to a
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 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 A90-SS meter calibration is
changed the 4/20mA output will be
disabled and the output current will be
set to 3.5mA irrespective of the meter
display. The 4/20mA output should
therefore always be reconfigured
following changes to the A90-SS meter
configuration.
7.4.7 RTD fault detection:
fault
Fault function is only included in the 4/20mA
configuration menu when the A90-SS meter is
configured for a Resistance Thermometer input.
If the Resistance Thermometer is significantly
below or above it's anticipated resistance value,
the function sets the 4/20mA output current to one
of three out of range values which are selected in
this sub-function.
Using the
&
or
*
button select
fault
in the
4/20mA output sub-menu and press ( to reveal
the existing setting. One of three output currents
may be selected by operating the
&
or
*
button,
or the function may be disabled by selecting
off.
Output currents
Select Output current
off
dn 3
. 6
3.6mA
dn 3 . 8
3.8mA
uP 21
21mA
Resistance Thermometer fault is considered to
exist when resistance is below or above following
limits:
Lower Upper
3-wire RTD 5 Ω 500 Ω
2-wire RTD 10 Ω 550 Ω
Differential RTDs 10 Ω 550 Ω
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