14
10 Operation
After every power on all LEDs light and go out again step by step (during this time
the output is closed if configured as normally open)� Then the unit is ready for
operation�
In case of power failure or interruption of the operating voltage all settings remain�
Operation indication
Green LED bar: current flow within the display
range�
Indication of the switch point (SP):
- LED (orange: output closed�
- LED red: output open�
LED 9 flashes: current flow above the display
range�
LED 0 flashes: current flow far below the display
range�
Interference indicators
Short circuit at the switching output:
The operating indicator and red LEDs flash
alternately�
If the short circuit has been rectified, the unit
immediately passes into the normal operating
state�
The current operating state is displayed�
Display OFF
(no LED lights):
Operating voltage too low (< 19 V) or failed�
Ensure a correct
voltage supply�
11 Maintenance
Recommended maintenance:
► Check the sensor tip for build-up from time to time�
► Clean it using a soft cloth� Stubborn build-up (e�g� lime) can be removed using
a common vinegar cleaning agent�
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