KEYENCE Visual KV Series - Manual (Page 91)

Chapter 2 System Installation 1-67
1
2
Visual KV
Series
2.1 Installation Environment
2.1.4 Cautions on Wiring for Each Unit
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.
• Turn off the power before starting wiring.
• For the installation position, select a location whose ambient temperature
is 0 to +50°C, whose ambient humidity is 35 to 85% RH, and one which is
not subject to drastic temperature changes.
• If the 24 VDC + output terminal and the 24 VDC - 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 gener-
ate 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 VDC output terminals. If the DC output is connected, the
power supply unit may be damaged.
■ Wiring for an AC type basic unit
For an AC type basic unit, perform the wiring as shown in the figure below.
Note 1: Connect an insulating transformer (1:1) or noise filter to reduce line noise.
Note 2: Use twisted cables to reduce induction effects.
Note 3: When using a basic unit in a location with a lot of noise, the noise may be reduced
by completely grounding the basic unit.
CAUTION
KV-16AR
100 to
240 VAC
±10%
0 1 2 3 4 5
0 1 2 3 4 5 6 7 8 9
5ch
0ch
C1 001 003 005 007 009 008 006 004 002
500
KV-16AR
C3 24V-OUT-OV C4 503 505 501 502 504
000 IN
OUT
EYENCE
24 VDC service
power supply
(supplied from
outside)
Bottom
Breaker
Insulating transformer,
noise filter, etc.
Grounding
KVHKA Chap 02.p65 08.3.11, 11:11 AM 67