50 | Maintenance Instructions TOPAX DX | BA-40100-0-V04
Chapter 21: Troubleshooting and diagnostics
21. Troubleshooting and diagnostics
TOPAX DX is equipped with a screen-display where all information, operation data and alarms are displayed in clear text form. In the event
of several failures happening at the same time, it is possible to recall the alarm messages and view them one by one using the arrow-keys
▲
and
▼
. The system displays the following alarm and messages:
Self-setting alarms
Alarm message
Possible causes
Failures and troubles caused to the instrument
Alarm relay
Controller output 0%
System Start
Not activated
Yes (all)
Keyboard locked
Keyboard lock is ON (max. 60 sec)
Not activated
No
Sensor alarm
Input power < 4mA, Input power > 1mA
or faulty input module
activated
Yes –
Assigned to inputs
„Measuring unit“ not calibrated
Calibrate corresponding input
Not activated
No (the measurement input works
with standard values)
„Measuring unit“ Calibration not OK
The corresponding input cannot be calibrated to the
requirements
Not activated
No (the measurement input works
with standard values)
Faulty potentiometer compensation „Measuring unit“
Position feedback: compensation was not done
Not activated
Yes
Manual operation
Manually started
Not activated
Filter backwash
manually started (external contact)
Not activated
Yes
Water shortage (not during calibration)
Water is not enough
Through-flow contact is defective
activated
Yes (all)
Night-time economy operation
Night time economy mode is activated
Not activated
Level-Pre-alarm (programmable)
Chemicals container is nearly empty
activated
No
Level-Main alarm (programmable)
Chemicals container is empty
activated
Yes
The following messaged need to be exited to clear the display
Alarm message
Possible causes
Failures and troubles caused to the instrument
Alarm relay
Controller output 0%
Max-Alarm
Measuring value max settings were exceeded
activated
programmable
Min-Alarm
Measuring value min settings were exceeded
activated
programmable
Y-Alarm
Safety stop (see paragraph 9.)
activated
programmable
Suggestion of possible remedies
Alarm message
Possible causes
Possible remedies
System Start
System trigs back to normal operation after lag time
Keyboard locked
Keyboard lock is ON (max. 60 sec)
Keyboard is free after the time for 60 sec has elapsed
Sensor alarm
Input power < 4mA, Input power > 1mA
or faulty input module
• Check sensors connection
• Replace input module
„Measuring unit“ not calibrated
corresponding input not calibrated
Calibrate the input
„Measuring unit“
Calibration not OK
• Insufficient resistivity of the electrode
• Zero point drift too large
Change buffer solution or replace electrode
Sensor or combination electrode not compliant to DIN Standards
Check and eventually replace the input sensor
Defective input module
Check and eventually replace the input sensor
Faulty potentiometer compensation
Position feedback: compensation was not done
Perform compensation
Filter backwash
manually started (external contact)
The system sets automatically back to normal mode
after due lag time. Please wait.
Water shortage
Water is not enough, or the through-flow contact is defective
• Provide bigger water flow
• Check through-flow contact
Level-Pre-alarm (programmable)
Chemicals container is nearly empty
Fill up chemical agents or change container
Level-Main alarm (programmable)
Chemicals container is empty
Fill up chemical agents or change container
Max-Alarm
Measuring value max settings were exceeded
• Check measurement or sensor
• Adjust controller’s parameter
Min-Alarm
Measuring value min settings were exceeded
Y-Alarm
Safety stop (see paragraph 9.)
