Omron ZEN User Manual

46
Wiring Section 2-2
Connecting Positive Common (NPN Connection)
Precautions for Correct Use
• Apply the power supply voltage through a relay or switch in such
a way that the voltage reaches the rated value within 4 s. If the
voltage is applied gradually, the power may not be reset or
unstable output operations may result.
• Be sure to connect COM terminal before turning ON power. The
un-connecting COM terminal or the wiring change after turning
ON power may cause malfunction.
■ Expansion I/O Units
Connecting a Negative Common
Connecting Positive Common
COM I5 I6NC I7 I8 I9 Ia IbI0 I1 I2 I3 I4
Input device
12 to 24 VDC
Note: If a positive common is used,
analog input devices cannot be
connected to Ia and Ib.
COM I5I0
I1
I2 I3 I4 COM IN0 IN1 IN2 IN3 COM IN0 IN1 IN2 IN3
Expansion I/O Unit
ZEN-8E1DR
(with DC power input
and relay outputs)
Input
devices
12 to 24 VDC
CPU Unit with 10 I/O Points
Input devices
Expansion I/O Unit
ZEN-8E1DT
(with DC power input
and transistor outputs)
COM I5I0
I1
I2 I3 I4 COM IN0 IN1 IN2 IN3 COM IN0 IN1 IN2 IN3
Expansion I/O Unit
ZEN-8E1DR
(with DC power input
and relay outputs)
Input
devices
12 to 24 VDC
CPU Unit with 10 I/O Points
Expansion I/O Unit
ZEN-8E1DT
(with DC power input
and transistor outputs)
Input devices
Z211-E1-03.book Page 46 Friday, November 21, 2008 10:38 AM

Omron ZEN Specifications

General

Display	LCD
Mounting Type	DIN Rail
Operating Temperature	-10 to 55°C
Power Supply Voltage	100-240V AC
Output Type	Relay, Transistor
Number of Outputs	4-8
Programming Language	Ladder Logic