System manual CECX / Analog input/output module CECX-A-4E4A-A
CECX-II 22-5
22.4 Connections and wiring
22.4.1 Connection of the shield-rail for analog signals
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NC
GND
GND
GND
+
-
AI0
+
-
AI1
+
-
AI2
+
-
AI3
AO0
AO1
GND
AO2
AO3
GND
GND - connection
against 50 Hz field,
length max. 1 m
shield rail
STATCTRL
DIAG
SI0
0V
+24V
CAN0
RXTX
COMPACT FLASH
USB
Ser.No.
Pxxxxx-xxxxx
ETHCAN1SI1
Connection of the shield-rail for analog signals
22.4.2 Notes on wiring the analog lines
• Analog lines and reference voltage must be connected with a
shielded cable.
• The shield rail must be connected to the GND terminal at one point.
• The shield must be placed on the shield rail as shown above.
• To attain optimum interference immunity, analog lines and reference
voltage should not be laid out parallel to strong interfering lines (e.g.
lines of converters for motors).