AFRISO AFA 11, Operating Instruction

Page: 63 / 209

12
Product description
EN
AFA 11
4.3 Function
The product can detect accumulations of liquids.
The photoelectric probe detects the different optical and conductive charac-
teristics of air and liquids. If there is air between the transmitter and the
receiver, most of the infrared light transmitted by the transmitter is received
by the receiver. If there is liquid between the transmitter and the receiver, only
a small portion of the infrared light reaches the receiver and the product trig-
gers an alarm.
The product triggers visual and audible alarms. The alarm can be transmitted
to additional equipment (for example, horn or warning light with rotating
reflector) via the changeover contact.
Products with EnOcean® wireless module
The AFRISOhome gateway allows for automatic transmission of messages
in the case of an alarm.
4.4 Relay output
The product features a voltage-free changeover contact for transmission of
the alarm condition to additional equipment.
The product can be operated with or without additional equipment, for exam-
ple:
• Visual and audible alarm units
• Remote alarm equipment
• Building control systems
• Other
Operating mode Eco
The product is factory-set to the operating mode "Eco". If no alarm is present,
the relay is de-energised. In case of an alarm, the relay is energised and
switches the changeover contact.
Operating mode Failsafe
You can also operate the product in the operating mode "FailSafe" (see chap-
ter "Setting the operating mode"). If no alarm is present, the relay is ener-
gised. In case of an alarm, the relay is de-energised.
The operating mode "FailSafe" is recommended if additional alarm units are
connected to the product.