Omron ZN-A Series - Page 71

61
ZN
System Manual
Section 4 APPENDICES
Section 4
Specifications and Dimensions
■ I/O Circuit Diagram
NPN type (ZN-PDA11)
■ External I/O
• Wire the cable correctly. Otherwise, the Amplifier Unit might be damaged.
• The function of the white lead can be selected by the switch on the rear of the Amplifier Unit.
(1) This is the power terminal. Connect the 24 VDC power supply to this terminal.
(2) This is the 0 V power supply terminal. On an NPN type Amplifier Unit, this terminal
becomes the common terminal for inputs/outputs other than the linear output.
(3) This output turns ON when "measured value ≥ warning threshold".
Operation is the same as lighting of the OUT1 indicator.
(4) This output turns ON when "measured value ≥ caution threshold".
Operation is the same as lighting of the OUT2 indicator.
(5) This input is for resetting each of the outputs. When this input is ON, internal
calculations are stopped, and judgment outputs are forcibly turned OFF. This input
can also be used to clear the peak hold value.
I/O switch
Internal circuit
Brown
White
Gray
Blue
24 VDC
Caution judgment
output
Reset input
Warning judgment
output
GND (0V)
Load
Load
24 VD
C
{
Br
o
w
n
Bl
ue
Gra
y
W
hit
e
(1) 24 VDC
(2) GND (0V)
(3) Warning judgment output
(4) Caution judgment output
(5) Reset input
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