Compliance with EC Directives
Section 3-6
Sensor Inputs
When using the following configurations, the sensor and Input Unit should re-
ceive their power from the same source.
NPN current output
+
Current
regulator
IN
DC input
Output
7 mA
0 V
COM
NPN open-collector output
+
Sensor
Power
Supply
IN
DC input
Output
7 mA
0 V
COM
PNP current output
+
Sensor
Power
Supply
Output
IN
AC/DC input
7 mA
0 V
COM
AC Inputs
Contact output
IN
AC input
COM
AC Switching
IN
AC input
Prox.
switch
main
circuit
COM
3-6 Compliance with EC Directives
The following precautions must be abided by when installing CV-series PCs to
meet EC Directives.
1, 2, 3...
1. CV-series PCs are classified as open-structure devices and must be
installed inside a control panel.
2. Use reinforced insulation or double insulation on the DC power supply con
-
nected to CV500-PS211 Power Supply Unit and DC I/O Units.
3. Use separate power supplies for Relay Output Units and DC I/O Units.
66
OMRON [ OMRON ELECTRONICS LLC ]
