CALECTRO SenseAir A-SENSE Manual de instalação - Página 12
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Electrical connections
The power supply has to be connected to
system ground. If the analogue output is connected to a controller the same ground
reference has to be used for the A-SENSE unit and for the control system! Unless
different transformers are used, special precautions need to be taken.
measuring.
Connection
Function
Terminal
~
Power (+)
+
Power ground (-)
Out(1)
Analogue Output 1 (+)
Out(2)
Analogue Output 2 (+)
Note 1:
The ground terminal is used as negative power supply DC input or AC phase ground
(halfwave rectifier). A single transformer may be used for the entire system.
Note 2: A-SENSE can deliver a voltage or a current loop for Out(1)/ Out(2). To change between
voltage and current output mode the hardware jumpers are used. There is one jumper for Out(1) and
one for Out(2), so that one output can be a voltage output and the other a current output. Both, voltage
output and current outputs, can have start points 0 % (0-10 VDC or 0-20mA) or 20% (2-10 VDC or 4-
20mA). The same start point is used for both outputs.
~
+
and
PLEASE NOTE! The A-SENSE signal and power
supply grounds are common
PLEASE NOTE!
The same ground reference has to be used
for the A-SENSE unit and for the control
system!
If possible keep the sensor powered up after
mounting. Connect the analogue output before
Electrical Data
24 VAC/DC+ (+-20%), 1W
24 VAC/DC-
0-10 VDC or 0-20 mA,
2-10 VDC or 4-20 mA,
Same as Output 1
.
is considered as
Remarks
See note 1!
0...2000 ppm CO
o
0...50
C
According to positions of
Out(1) or Out(2) and start
point jumpers.
See note 2!
Dokument
Rev
IMA 242
1
2
Sid
12 (16)