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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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