Supply Voltage - Helios CO2 AP-A Notice De Montage Et D'utilisation

Installation and operating instructions
Notes on commissioning:
This device was calibrated, adjusted and tested under standardised conditions. When operating under deviating conditions, we recom-
mend performing an initial manual adjustment on-site during commissioning and subsequently at regular intervals.
Commissioning is mandatory and may only be performed by qualified personnel!
These instructions must be read before installation and commissioning and all notes provided therein are to be
regarded!

SUPPLY VOLTAGE :

For operating voltage reverse polarity protection, a one-way recti-
fier or reverse polarity protection diode is integrated in this device
variant.
This internal one-way rectifier also allows operating 0 - 10 V devic-
es on AC supply voltage.
The output signal is to be tapped by a measuring instrument.
Output voltage is measured her against zero potential (O V) of the
input voltage!
When this device is operated on DC supply voltage, the operating
voltage input UB+ is to be used for 15...36 V DC supply and UB –
or GND for ground wire!
When several devices are supplied by one 24 V AC voltage supply,
it is to be ensured that all "positive" operating voltage input termi-
nals (+) of the field devices are connected with each other and all
"negative" operating voltage input terminals (–) (= reference poten-
tial) are connected together (in-phase connection of field devices).
All outputs of field devices must be referenced to the same poten-
tial!
In case of reversed polarity at one field device, a supply voltage
short- circuit would be caused by that device. The consequential
short-circuit current flowing through this field device may cause
damage to it.
Therefore, pay attention to correct wiring!
CO2 Monitor CO2 Monitor
Connecting scheme
Individual operation
Connecting scheme
Parallel operation
Power supply
AC 24V~
DC 15-36V = GND
10
Power supply
AC 24V~ 0V
DC 15-36V = GND
Circuitry
0V
Circuitry
Circuitry