Lambrecht Ser[LOG], Руководство оператора

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LAMBRECHT meteo GmbH Ser[LOG] Manual Page 21 of 129
2.3 Connection of analogue sensors
Analogue sensors can be connected to the Ser[LOG]Plus or the AnDiMod modules. For each AnDiMod
module (Ser[LOG]Plus already contains one), 12 analogue signals can be measured. The systems can
be expanded to a maximum of up to 36 analogue signals.
The analogue inputs can be used to measure each time:
•
5 V bipolar,
• 5 V unipolar,
•
50 mV bipolar,
•
0/4... 20 mA,
• 500 Ohm and
•
5000 Ohm.
Note: In order for the occupied analogue inputs to be used, they must still be configured with the
Ser[LOG]-Commander.
2.3.1 Connection - Sensors with voltage signal
Voltage signals can be measured by the Ser[LOG]Plus or AnDiMod up to a maximum of 5V. If sensors
with higher voltages (e. g. 10 V) are to be measured, suitable voltage dividers must be used. For the
measurement of millivolts (mV) signals, the analogue inputs can be set to the measuring range ± 50mV
with the Ser[LOG]-Commander.
voltage
signal
-
+
SHUNT
SHUNT
I+
U+
U-
I-
0…+5V
-5…+5V
-50…+50mV
2.3.2 Connection - Sensors with current signals (0/4...20mA)
If sensors with 0...20mA or 4...20mA signals are connected to the Ser[LOG]Plus or AnDiMod sensors,
the connection is also made to the "U+","U-" terminals. In addition, the internal shunt resistor must be
connected for the current measurement. The shunt resistor is connected by a bridge between the two
upper terminals (marked with "SHUNT").
current
signal
-
+
SHUNT
SHUNT
I+
U+
U-
I-
0...20mA
4...20mA