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IMA0156
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4
Page
2 (3)
Electrical connections
The power supply has to be connected to and . is considered as
system ground. If the analogue output is connected to a controller the same ground
reference has to be used for the aSENSE unit and for the control system! Unless
different transformers are used, special precautions need to be taken.
PLEASE NOTE! The aSENSE signal and
power supply grounds are common
NOTE!
The same ground reference has to be used for
the aSENSE unit and for the control system!
Connect the power after mounting. The analogue
output should be connected before measuring.
Connection
Terminal
Function
Electrical Data
Remarks
Power (+)
Power ground (-)
24-29 VAC/DC+
(minimum 2 A continuously)
24 VAC/DC-
The heater is connected to G+ and
G0. Minimum temperature 30
o
C
See note 1!
Out(1)
Out(2)
Not marked
Analogue Output 1 (+)
Analogue Output 2 (+)
Signal Ground (-)
0-10 VDC or 0-20 mA,
2-10 VDC or 4-20 mA,
Same as Output 1
Connected to G0 via PTC
fuse
According to positions of OUT1
and start point jumpers.
See note 2!
According to positions of OUT2
and start point jumpers.
See note 2!
See note 1!
Note 1: The ground terminal is used as negative power supply DC input or AC phase ground
(halfwave rectifier). The signal ground M, protected by a PTC resistor, is the same as power ground
(permitting a ”3-wire” configuration). A single transformer may be used for the entire system.
Note 2: aSENSE 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. See the user manual.
~
+
~
+
2


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