ABB AX400 Series User Manual

Single and dual input analyzers for pH/Redox (ORP)
AX416, AX436, AX460, AX466 & AX468 5 Programming
34 IM/AX4PH Rev. P
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 57) 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 62) 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 – see Section 5.5.1, page 36.
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 h1 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, Te m p .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
– see Section 5.3, page 30.
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

ABB AX400 Series Specifications

General

Display	LCD with backlight
Output	4 to 20 mA, HART
Process connection	Flanged
Lining material	PTFE, PFA
Electrode material	Stainless steel, titanium
Communication	HART