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19
5
PROGRAMMING…
5.4
Configure Alarms
Configure Alarm 1
Alarm 2 (and Alarms 3 and 4 if optional analog output board is fitted)
configuration is identical to Alarm 1.
Alarm 1 Type
Select the type of alarm required:
Off
– The alarm is disabled, the alarm LED is off and the relay is de-energized at all
times.
Alarm
– The analyzer is configured using the
Assign
parameter (following) to
generate an alarm in response to a specified sensor reading.
Status
– The analyzer alerts the operator to either a power failure or a condition that
causes an error message to be displayed – see Table 8.1.
Alarm 1 Assign
When Alarm 1 Type is set to
Alarm
, this enables the alarm to alert the operator to one of two
alarm conditions for a specified sensor:
Temp.A
– The analyzer alerts the operator if the temperature of the process fluid
measured by the selected sensor exceeds or drops below the value set in
the
Alarm 1 Set Point
parameter (see next page), depending on the type of
Alarm 1 Action
selected – see next page.
Sen.A
– The analyzer alerts the operator if the conductivity of the process fluid
measured by the selected sensor exceeds or drops below the value set in
the
Alarm 1 Set Point
parameter (see next page), depending on the type of
Alarm 1 Action
selected opposite – see next page.
Notes.
1) Sensor B alarms and signal calculation are applicable only to dual input conductivity.
2) If
Signal Calc.
is set to any parameter other than
No Calculation
(see opposite), the
display shows the selected parameter:
% Pass
– If
Signal Calc.
is set to
% Passage
% Rej
– If
Signal Calc.
is set to
% Rejection
A – B
– If
Signal Calc.
is set to
Difference A – B
A/B
– If
Signal Calc.
is set to
Ratio A/B
pH
– If
Signal Calc.
is set to
Inferred pH
(see Appendix A3 for further
information on inferred pH)
The analyzer alerts the operator if the value of the calculation exceeds or drops below the
value set in the
Alarm 1 Set Point
parameter (see next page), depending on the type of
Alarm 1 Action
selected – see next page.
Continued on next page…
Config. Alarm 1
-----
A1: Type
-----
Off
A1: Assign
-----
CONFIG. ALARMS
-----
Off
Alarm
Status
%Pass
Temp.B
Sen.B
Temp.A
Sen.A
2
A1: Failsafe
Config. Alarm 2
Summary of Contents for AX411
Page 1: ...AX400 Series User Guide Model AX411 Dual Input Conductivity Analyzer ...
Page 53: ...51 NOTES ...
Page 54: ...52 NOTES ...