afriso OM 1 Notice Technique page 81

7 Operation
The product monitors areas and signals accumulations of liquids. If one or
several photoelectric probes are submerged in liquid, the product signals an
alarm.
OM 5+1 additionally monitors for a minimum or maximum level.
If the floating probe is used for minimum level detection, the control unit trig-
gers an alarm as soon as the liquid level falls below the adjusted limit value.
If the floating probe is used for maximum level detection, the control unit trig-
gers an alarm as soon as the liquid level exceeds the adjusted limit value.
Operating the product is limited to its regular monitoring:
• The green LED is on.
• The red LED is off.
• The audible alarm is off.
Also note the information provided in chapter 8 "Maintenance"
7.1 Alarms
Leakage alarm:
If one of multiple photoelectric probes detect liquid, the electrical output sig-
nal of the probe changes and the control unit triggers a visual alarm.
• The red LED lights.
• The audible alarm sounds.
The alarm signal is transmitted to additional equipment via the relay output.
See "Spare parts and accessories" on page 37.
Level alarm (minimum/maximum)
The switching function of the floating probe is set via a coding plug in the con-
trol unit.
If the floating probe is used for minimum level detection, the product signals
an alarm if the float no longer floats on the liquid.
If the floating probe is used for maximum level detection, the product signals
an alarm as soon as the float starts to float on the liquid.
In the case of a level alarm, the red LED flashes and the audible alarm
sounds.
Operation
EN
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