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Single and Dual Input Analyzers for pH/Redox (ORP)
AX416, AX436, AX460, AX466 & AX468
5 PROGRAMMING
34
IM/AX4PH
Issue 9
5.5 Configure Alarms
Configure Alarm 1
Alarms 2 and 3 configuration (and Alarms 4 and 5 if option board fitted
and
analog
features enabled - see section 7.3, page 58) is identical to Alarm 1 configuration.
Alarm 3 can also be configured as a Wash alarm if
A3: Type
is set to
Wash
- see
following frame.
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
frame (following) to
generate an alarm in response to a specified high or low pH,
Redox (ORP) or process temperature sensor reading.
Status
-
An alarm is generated if either a power failure or a condition that
causes any of the error messages in Table 8.1 (page 63) to be
displayed occurs.
Wash
-
Alarm 3 is configured to control the wash sequence.
Note.
The
Wash
alarm type can be assigned only to Alarm 3 and is displayed only when
the lower display line shows
A3: Type
.
A1: Type
set to
Off
or
Status
.
A1: Type
set to
Alarm
- continued below.
A3: Type
set to
Wash
Alarm 1 Assign
Select the alarm assignment required:
Sen.A
Sen.B
-
The analyzer activates an alarm if the pH or Redox (ORP) value of
the process fluid measured by the selected sensor exceeds or
drops below the value set in the
Alarm 1 Set Point
parameter,
depending on the type of
Alarm 1 Action
selected - see next
page.
Temp.A
Temp.B
-
The analyzer activates an alarm 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, depending on
the type of
Alarm 1 Action
selected - see next page.
A-B
-
The analyzer activates an alarm if the difference between the
Sensor A and Sensor B readings exceeds or drops below the
value set in the
Alarm 1 Set Point
parameter, depending on the
type of
Alarm 1 Action
selected - see next page.
Note.
The
Sen.B
,
Temp.B
and
A-B
alarm assignment types are applicable only to dual
input analyzers and
A-B
is displayed only when
Probe Type
for each sensor is set to
pH
Continued on next page.
Config. Alarm 1
-----
A1: Type
-----
A1: Assign
-----
CONFIG. ALARMS
-----
Wash
Status
Alarm
Off
A-B
Temp.B
Sen.B
Temp.A
Sen.A
A1: Failsafe
Config. Alarm 2
A1: Assign
Config. Alarm 1
Wash Mode