User Manual
3
KV Series Basic Unit-IM_E
This section describes cautions to keep in mind when wiring is performed for I/O units. Be 
sure to read this section before starting wiring.
 Wiring procedures for basic units
The wiring procedures for basic units are described below.
.
 Wiring for an AC type basic unit
For an AC type basic unit, perform the wiring as shown in the figure below.
 Wiring for a DC type basic unit
For a DC type basic unit, perform the wiring as shown in the figure below.
 Cautions on wiring for I/O units
When performing wiring for an I/O unit, pay strict attention to the following contents.
• Separate input lines from output lines in wiring.
• If the wiring for power is located near I/O signal lines, a malfunction may occur caused 
by the effects of a high voltage and large current.
• Keep I/O signal lines away from the power wiring by at least 100 mm.
• Separate 24VDC I/O lines from 100 VAC and 200 VAC lines.
• When using pipes for wiring, make sure that the pipes are securely grounded.
When I/O signal lines cannot be separated from the wiring for power
In such a case, perform grounding on the KV side using batch-shielded cables. (In some 
environments, grounding should be performed on the reverse side of the KV.)
 Terminal
The terminal screws used are M3. When performing wiring with crimp-style terminals, use 
the following ones.
 Cautions on grounding
Because the KV Series is constructed to be sufficiently resistant to noise, it can usually be 
used without being grounded. However, when the KV Series is used in an environment with 
a lot of noise, grounding is required. In such a case, pay strict attention to the following 
contents.
• Perform completely grounding for each individual unit. In this case, the ground 
resistance should be 100 ¾ or less.
• If individual grounding is not possible, perform common grounding. In this case, the 
length of each grounding cable should be equal.
If inductive loads such as clutches, motors, and solenoids are used, a rush current may flow 
when the load power supply is turned on, or a counter electromotive voltage may be 
generated when the load power supply is shut down. The rush current and the counter 
electromotive voltage can contribute considerably to shortening the service life of the 
contacts. To prevent this from happening, provide a contact protection circuit.
KV-10AR/DR (Relay output type)
 Terminal layout drawing  Output circuit diagram
KV-16AR/DR (Relay output type)
 Terminal layout drawing  Output circuit diagram
KV-24AR/DR (Relay output type)
 Terminal layout drawing  Output circuit diagram
Cautions on Wiring for Each Unit
• Turn off the power before starting wiring.
• For the installation position, select a location whose ambient 
temperature is 0 to +50°C (32 to 122°F) (No freezing), whose 
ambient humidity is 35 to 85% RH (No condensation), and one 
which is not subject to drastic temperature changes.
• If the 24 V DC + output terminal and the 24 V DC - output terminal 
are switched, the power supply unit and connected units may be 
damaged. Never switch them.
• Be sure that the sum of the current consumption of all connected 
units does not exceed the output capacity of the service power 
supply. If the system is operating in an overload status, the internal 
circuits may generate heat or be damaged. To recover from an 
overload status, disconnect some of the connected units.
• Never connect the DC output of any other power supply, either in 
serial or parallel, to the 24 V DC output terminals. If the DC output is 
connected, the power supply unit may be damaged.
• Connect an insulating transformer (1:1) or noise filter to reduce line noise.
• Use twisted cables to reduce induction effects.
• When using a basic unit in a location with a lot of noise, the noise 
may be reduced by using completely grounding the basic unit.
• Connect the power supply to the power supply input terminals with 
24 VDC output, which offers a sufficient margin of power capacity. 
Usually, the sum of the current consumption of all connected units 
multiplied by 1.5 or more is required for the power capacity.
• To reduce line noise, insert a ferrite core.
NOTICE
0123
012345
5ch
0ch
C1
001 002 003 004 005
C2
KV-10AR
50024V-OUT-OV C3 C4 503
501 502
000
IN
OUT
EYENCE
24 V DC service 
power supply 
(supplied from 
outside)
Grounding
The power input 
terminals at the lower 
side of the unit
Insulating transformer, 
noise filter, etc.
Breaker
AC100 to 
240 V 
±10%
KV-10AR
Point
KV-10DR
0123
012345
5ch
0ch
C1
001 002 003 004 005
C2
KV-10DR
50024V-IN-OV C3 C4 503
501 502
000
IN
OUT
EYENCE
24 V DC external power supply
Breaker
Point
RL
24 V DC
KV
Sensor
Ground
Shielded cable
Input
Output
M3 
6.0 maximum
KV KV
A = B A > B
A < B
B
B
A
KV
A
Completely grounding
Contact Protection
Part Names and Functions
Terminal layout drawings and I/O circuit diagrams
012345
0123456 789
5ch
0ch
C1 001 003 005 007 009
008006004002
500
KV-16AR
C324V-OUT-OV C4 503 505
501 502 504
000
IN
OUT
EYENCE
24V
5V
INPUT
VOLT
AC100V
-
240V
 0.5A 50/60Hz
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01AtropnoitacinummoC
Modular connector for connecting a personal computer, handheld programmer, or operator panel.
11BtropnoitacinummoC
Modular connector for connecting a personal computer, handheld programmer, or operator panel.
6.
Connector (provided on side)
2. Output terminal block
3. Power input terminal
10.Communication 
port A
9. Input voltage selector 
switch
Provided on side
1. Input terminal block
4. Input indicator lamps
5. Output indicator lamps
7. Access window
11. Communication 
port B
(Power input terminals for 
AC power types are provided 
on the lower 
side of the 
unit.)
8. Setting keys
000  001 002  003 004  005
24V 0V 500 C3 C4 503
 C1  C2
 501  502
500
C3
C4
501 to 503
503
502
C4
501
C35000V24V
• C3 and C4 are each independent.
Internal circuit
Internal circuit
C4
501
C3 503 505
500 502 504
0V
24V
 C1  001 003 005 007  009
 000 002 004 006 008
 24V 0V  C3  C4 503 505
  500 501  502 504
500 to 501
C3
C4
502 to 505
• C3 and C4 are each independent.
Internal circuit
Internal circuit
 C1  001 003 005 007  009 011 013  015
 000  002 004  006 008  010 012 014
 24V 0V    C3 C4  C5 C6 505 507
 500  501 502  503 504 506 
C6
503
C5 505 507
502 504 506
C4C3
501500
0V
24V
500
501
502 to 503
504 to 507
C3
C4
C5
C6
• C3 to C6 are each independent.
Internal circuit
Internal circuit






