28
MODEL 1054B pH/ORP
SECTION 4.0
CONFIGURATION
4.8 DEFAULTS.
Display Mnemonic
dFt
. This item is
used to set the configuration of relays and output
default conditions during fault or hold status. See
Table 8-1 for a listing of the possible fault conditions
which can be diagnosed by the analyzer.
A. Relay 1 and 2.
Display Mnemonic
rL1
and
rL2
.
During a fault or hold condition the relays can be set
to activate
on
, deactivate
oFF
, or remain in the state
determined by the last process value
non
. See Table
4-3.
B. Current Output.
Display Mnemonic
Cur
. The cur-
rent output is held at the last process value
non
or
goes to a specified value in mA
cur
during a fault or
hold condition.
C. Fault History.
Display Mnemonic
SHO
.
SELECT
this
item will sequence the display through all faults
detected in most recent fault mode. Press the
SCROLL
(
é
) key once for previous fault mode list.
Pressing
ACCESS
will clear
SHO
history.
4.8.1 Default Setup (
dFt
).
1.
Enter Set Mode by pressing the
ACCESS
key
twice.
2.
SCROLL
(
é
) until
dFt
appears on the display.
3.
SELECT
to move to the next menu level.
rL1
will
display.
4.
SCROLL
(
é
) then
SELECT
desired item.
5.
Display will show next item selection.
SCROLL
(
é
) and
ENTER
desired item.
6.
Repeat Steps 4 and 5 as required for other
default settings
rL2
and
Cur
. If
cur
is selected for
Cur
, press
ENTER
, then use the
SCROLL
(
é
)
and
SHIFT
(
ç
) keys to enter the desired current
value for a fault or hold condition.
7.
Press the
ENTER
key to return to Set Menu.
ANALYZER CONDITION
NORMAL
HOLD
FAULT
Set men
AL1/AL2
setting
Set menu
AL1/AL2
setting
Set menu
AL1/AL2
setting
On
OFF
FLt
On
OFF
FLt
On
OFF
FLt
(Alarm 2
(Alarm 2
(Alarm 2
only)
only)
only)
on
Proc. det.
–
–
+
–
–
+
–
+
off
Proc. det.
–
–
–
–
–
–
–
+
non
Proc. det.
–
–
Proc. det.
–
–
Proc. det.
–
+
Set menu
default
(
dFt
)
setting
rL1/rL2
Proc. det.:
Alarm state is determined by the process value
+
:
Relay will activate
–
:
Relay will not activate
Example:
If you want the analyzer to activate relay 1 in hold mode during buffer calibration, set
AL1
to
On
in Section 4.2, and set
rL1
to
on
.
TABLE 4-3. Relay States for Various Analyzer Conditions
and Alarm/Default Configurations
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