Connecting I/O Devices - Omron CP1L-EL20DR-D Operation Manual

Wiring CP1L-EL/EM CPU Units
Note
Connecting I/O
Devices
DC Input Devices
Contact output
NPN open-collector output
+
Sensor
power supply
Output
5 mA/
7 mA
0 V
PNP current output
+
Sensor
power supply
Output
5 mA/
7 mA
0 V
84
(1) Never apply a voltage that exceeds the input voltage for Input Units or the
maximum switching capacity for Output Units.
(2) When the power supply has positive and negative terminals, always wire
them correctly.
(3) When required by EC Low Voltage Directive, use reinforced insulation or
double insulation on the DC power supply connected to DC-power-supply
CPU Units and I/O.
For the DC power supply connected to a DC-power-supply CPU Unit, use
a power supply with a minimum output holding time of 10 ms.
(4) Do not pull on the cables or bend the cables beyond their natural limit. Do-
ing either of these may break the cables.
Use the following information for reference when selecting or connecting input
devices.
Connectable DC Input Devices (for DC Output Models)
IN
CP1L-EL/EM
COM
CP1L-EL/EM
IN
+
COM
IN CP1L-EL/EM
COM
• The circuit below should not be used for I/O devices with a voltage output.
Sensor
+
power supply
Output
0 V
Two-wire DC output
Sensor
power supply
NPN current output
+
Current
regulator
Output
5 mA/
7 mA
Sensor
power supply
0 V
Voltage output
+
Output
0 V
Sensor
power supply
CP1L-EL/EM
IN
COM
Section 3-4
IN
CP1L-EL/EM
+
COM
+
CP1L-EL/EM
IN
+
+
COM
+
COM
CP1L-EL/EM
IN