Engineering manual - UniSAB III 1.10.8
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001930 en 2021.06
Troubleshooting
9. Troubleshooting
9.1 Troubleshooting the UniSAB III controller
9.1.1 Diagnose tool
If irregularities occur in connection with compressor operation, UniSAB III can be inspected to determine
the cause of these irregularities.
In case of a shutdown all operating data including status of all inputs/outputs, analogue values and time
and date will be stored in the History menu. The shutdown list in the History menu includes all data for
the last 30 shutdown events. This makes it possible to inspect information on the display, which is partic-
ularly useful when searching for the cause of a compressor shutdown. For a description of how to use
the shutdown list in the History menu, see chapter 4.
For troubleshooting it is also possible to check the actual status of all digital/analogue inputs and outputs
in the UniSAB III Service menu, see chapter 5.
9.1.2 Light diodes
If opening the UniSAB III panel, it is possible to find a number of light diodes (LED) showing the actual
status of digital inputs/outputs, communication and power supply etc. The UniSAB III includes the follow-
ing LEDs:
Digital inputs (Green, 14 pcs)
Digital outputs (Red, 20 pcs)
Communication (LAN, Danbus/RS485, Profibus)
Sd card busy (Red, 1 pcs)
Processer status (Green, 1 pcs)
Processer reset (Red, 1 pcs)
Power on (Green, 1 pcs)
The position of each LED is shown in Fig. 52.
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