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I.S. Field Display User’s Manual
20 97321 Issue 2.3, May 2016
OPERATION
SP1
Alarm setpoint 1
Adjusts the alarm setpoint. The alarm is activated when the display
equals the setpoint. See Section 3.3.5.
Hi.Lo
Alarm function
De fi nes the alarm function as High or Low. See Section 3.3.6.
no.nC
Normally open or normally closed output
Sets the alarm output open or closed in the non-alarm condition. See
Section 3.3.7.
HStr
Hysteresis
Adjusts the alarm hysteresis. See Section 3.3.8.
dELA
Alarm delay time
Introduces adjustable delay between the display equalling the setpoint
and the alarm output being activated. See Section 3.3.9.
SiL
Alarm silence time
De fi nes the time that the alarm output remains in the non-alarm
condition following acceptance of an alarm. See Section 3.3.10.
FLSH
Flash display when alarm occurs
When enabled, alternates the numerical display between process
value and alarm reference,
ALr1
or
ALr2
, when an alarm output is
activated. See Section 3.3.11.
ACSP
Access setpoint
Sub-menu which enables direct access to the alarm setpoints from
the display mode, and de fi nes a separate security code. See Section
3.3.12.
3.3.4 Alarm Enable: ‘
EnbL
’
This function allows each alarm to be enabled or disabled without altering any of the
alarm parameters. To enable or disable the alarm select
EnbL
from the Alarm Menu
and press
P
to reveal the current setting
on
or
oFF
. The function can be changed by
pressing

or

followed by
E
to return to the Alarm Menu.
3.3.5 Setpoint Adjustment: ‘
SP1
’ and ‘
SP2
’
The setpoint of each alarm may be positioned anywhere in the numerical display of the
I.S. Field Display providing that this corresponds to an input current between 3.8 and
20.2 mA. For example, if the I.S. Field Display has been calibrated to display 0 with
4 mA input and 10000 with 20 mA input, the two alarm setpoints may be positioned
anywhere between -125 and 10125.
To adjust the setpoint select
SP1
or
SP2
from the Alarm Menu and press
P
which will
reveal the existing alarm setpoint. The fl ashing digit of the setpoint can be adjusted
using

and

, and
P
to move control to the next digit. When the required setpoint
has been entered, press
E
to return to the Alarm Menu.
The alarm setpoints may also be adjusted when the I.S. Field Display is in the display
mode. See Section 3.3.12.