Diagnostics; Diagnostic Error Messages; Flow Measurement; Totalizers - ABB AquaMaster4 Operating Instruction

A Q U A M A S T E R 4 | E L E C T R O M A G N E T I C F LO W M E T E R T R A N S M I T T E R | O I/ F E T4 0 0 - E N R E V. D
56

8 Diagnostics

Diagnostic error messages are displayed by pressing the
Diagnostics tab:
Aqm4
ID:4294967295
Last access: 10/05/2021 16:35:18

Flow Measurement

Flow Sensor Communications
Empty Pipe
High Flow Alarm
Low Flow Alarm

Totalizers

Totalizer Reset
Pulse Output Error

Maintenance Operating Modes

Simulation Mode Activate
Calibration Mode Activate
?
Process Values Configurtion
Figure 77 Example Diagnostics window
Messages displayed are for the last flowmeter selected from
the Instruments List – see page 48.
The following icons indicate the diagnostic status:
Table 6 Diagnostic icons
Icon Status
Failure
Check
function
i
Diagnostics
Icon Status
Out of
specification
Maintenance
required

Diagnostic error messages

Flow Measurement
Table 7 Flow Measurement – diagnostic messages
Icon Corrective action
Message
Remote sensor is not plugged in, or not
connected. If connected, this error indicates
Flow Sensor
a connection problem, with no sensor data
Communications
connection.
Check the sensor terminal box wiring.
The pipe is not full of water. Check the pipe.
An empty pipe is indicated when either, or both
measuring electrodes have resistances which
exceed the resistance trip level.
Check each electrode SigA & SigB Impedance.
Empty Pipe If one electrode resistance is far higher than the
other, it could indicate a wiring fault.
For very low conductivity application (< 20 uS/
cm) the electrode trip level may need to be
increased to prevent unwanted empty pipe
alarms.
The flowrate has exceed the upper flowrate alarm
High Flow Alarm trip level. Ensure this alarm threshold is set
correctly. Disable this alarm if not required.
The flowrate is lower than the low flowrate alarm
Low Flow Alarm trip level. Ensure this alarm threshold is set
correctly. Disable this alarm if not required.
Totalizers
Table 8 Totalizers – diagnostic messages
Icon Message Corrective action
Totalizer Reset A user has reset the totalizers.
The pulse output has saturated at the maximum
Pulse Output output frequency. An external counter will under
Saturation read compared to the true volume. Reduce the
Warning Pulses per unit volume on the Pulse Output
Setting menu to lower the output frequency.
Maintenance Operating Modes
Table 9 Maintenance Operating Modes – diagnostic messages
Icon Message Corrective action
The user has put the flowmeter into simulation
Simulation mode. The displays and outputs are set based on
Mode Active the entered simulated input value. This error is
cleared by turning off simulation mode.
The user has put the flowmeter into calibration
Calibration
mode. This error is cleared by turning off
Mode Active
calibration mode.