Jesco TOPAX DE, Operating Instructions Manual

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38 | BA-40400-02-V14
Two-Channel Controller TOPAX DE
15 Troubleshooting and diagnostics
All errors are indicated in clear text on the display of the TOPAX. If several errors occur simultaneously, the error messages can be viewed with the
▲
and
▼
keys. The following error displays and messages are possible:
15.1 Self-setting alarms
Display Reason Reactions of TOPAX
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 > 21mA
or faulty input module Activated Yes –
Input
allocated
"measurand" not calibrated Calibrate corresponding input Not activated No (the measurement
input works with standard
values)
"measurand" calibration not OK The corresponding input cannot be calibrated to the require-
ments Not activated No
Faulty potentiometer compensation "measur-
and" 3 point step-by-step controller position feedback: no calibra-
tion performed Not activated Yes
Manual mode manually started Not activated
measuring water shortage (not during calibra-
tion) water is not enough
through-flow contact is defective Activated Yes (all)
Night-time economy mode Night time economy mode activated Not activated
Low level alert Chemicals container is nearly empty Activated No
Level main alarm Chemicals container empty Activated Yes
15.2 Displays that must be confirmed with "OK"
Display Reason Reactions of TOPAX
Alarm relay
Controller output 0%
Max alarm Set measurement exceeded Activated configurable
Min alarm Measurement below set level Activated configurable
Y alarm Safety cutout (see item 9.2) Activated configurable
15.3 Remedy
Display Reason Remedy
System start System restores itself to normal operation after delay
Keyboard locked Keyboard lock is ON (max. 60 sec) System restores itself to normal operation after delay
Sensor alarm Input power < 4mA
Input power > 21mA
or faulty input module • Check sensor connection
• Replace input module
"measurand" not calibrated corresponding input not calibrated Calibrate corresponding input
"measurand" calibration not OK • Insufficient measuring cell transconductance
• Excessive zero point drift Buffer solution not ok, or replace measuring cell
Sensor or single-rod measuring cell not compliant with
DIN standards Check and replace measuring input sensor if necessary
Defective input module Check and replace the input module if necessary
Faulty potentiometer calibration 3 point step-by-step controller position feedback: no
calibration performed Perform a position feedback calibration in the "outputs"
menu
measuring water shortage water is not enough or
through-flow contact is defective • Increase sample water flow
• Check through-flow contact
Low level alert Chemicals container is nearly empty Add chemical agents or change container
Level main alarm Chemicals container empty Add chemical agents or change container
Max alarm Set measurement exceeded • Check measurement or sensor
• Check controller parameter setting
Min alarm Measurement below set level
Y alarm Safety cutout (see item 9.2)
Servo motor alarm Servo motor has not reached the end position and/or the
zero point Check servo motor