Omron SYSMAC C Series Operation Manual page 123

Specifications and General Information
6-1-4 Wiring
Voltage Outputs
Current Outputs
Precautions
1, 2, 3...
Unit
+
–
+
–
Shielded twisted-pair cable
Unit
+
–
+
–
Shielded twisted-pair cable
1. Use shielded twisted-pair cable for external connections.
2. Ground the shields to the load for both voltage and current outputs.
3. For current outputs, isolate the signal lines for each output point. These sig-
nal lines must also be isolated from the signal lines of other output circuits. If
a negative current output terminal is shared between points 1 and 2, or if the
negative current output terminal of a point is connected to another output
circuit, interference will occur between both points or between a point and
another output circuit, resulting in incorrect outputs.
4. A voltage (current) may be output momentarily from the output terminal
when the power supply to the PC is turned ON or OFF.
A maximum of 10 V will be output for several hundred milliseconds after the
power is turned OFF and will gradually drop down to 0 V.
If this causes a problem, provide countermeasures so that the power supply
or output timing of external devices differs from the ON/OFF timing of the
power supply at the PC.
0
+Voltage output
1 –Voltage output (0 V)
2
3
4
5
+Voltage output
6 –Voltage output (0 V)
7
8
9
0
1
2
+Current output
3
–Current output (0 V)
4
5
6
7
+Current output
8 –Current output (0 V)
9
Section 6-1
Point 1
Point 2
Point 1
Point 2
109