VIPA 134-4E Series, Руководство пользователя

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Chapter 2 Hardware description and deployment Manual VIPA System 100V
2-4 HB100E - EM - RE_134-4Ex - Rev. 08/23
Wiring the analog signals
For analog signals you have to use isolated cables to reduce interference.
The cable screening should be grounded at both ends. If there are
differences in the potential between the cable ends, there may occur a
potential compensating current that could disturb the analog signals. In this
case you should ground the cable screening only at one end.
The analog input modules provide variant connecting possibilities for:
•
Current sensor
•
Voltage senor
•
Resistance thermometer, Resistors (Pt, Ni, R)
Current sensors as 2 wire or 4 wire measuring transducer.
Please regard that the measuring transducers have to be provided
external.
Using 2 wire transducers an external power supply should be looped in.
Please install short circuits at non-used inputs by connecting the positive
contact with the channel ground. Bridging cannel ground and M
ANA
is
recommended.
The following picture illustrates the connection of 2 and 4 wire measuring
transducers at channel 0:
AI1
U
AI1
I
AI1
M
AI0
I
AI0
M
3
4
5
+ -
2 wire
3
DC24V =
AI0
U
2
6
7
M
1
L+
X1
AI2
U
AI2
I
AI2
M
8
9
10
X3
2
R3
ANA
10
M
AI3
AI3
M
+
-
L+ M
4 wire
M
AI1
U
AI1
I
AI1
M
AI0
I
AI0
M
3
4
5
3
AI0
U
2
6
7
M
1
L+
X1
AI2
U
AI2
I
AI2
M
8
9
10
X3
2
R3
ANA
10
M
AI3
AI3
M
Cables for analog
signals
Connecting
test probes
Connecting current
sensors