User`s manual

6-15
6-4 Wiring to I/O module
Before wiring to the I/O module confirm the specifications of the module. If the module is used beyond its
rated specifications, the module might be damaged, destroyed or cause fire.
Wiring to the I/O module, use a twisted wire of over KIV 0.5 square (over KIV 0.75 square in case of
wiring to the output module of large capacity, such as solenoid valves) and crimp-style terminals. For the
common line, use bigger wires than the above.
In order to prevent wire wastes from dropping into the module through a ventilation hole of the module
during the wiring work, keep the caution label stuck onto the upper side of the module. Peel the caution
label off of the module.
Do not include the I/O lines in the same pipe or duct as high-voltage lines and power lines. It might cause
malfunction or damage to the module. Avoid wiring over the operation indicator (LED indication port) of
the module.
[1] Terminal block type of 8/16 points
Open the terminal cover of the module when wiring.
Ensure correct connection for polarity of the input power supply. Mis-connection of the polarity will
destroy the module when power is supplied. Fasten the screws on the terminal block with a torque of
less than 1.18 N-m. After the wiring work, close the terminal cover and install a module cover: JW-20CV
(optional), wherever possible. => See page 5-8
13.3 *
7.2
M3.5
Self-locking up screw
- Terminal block dimension (mm) - Crimp-style
terminal
dimensions
B
d
2
* When a double-row terminal block is used: 9.5
(Our recommendation: Made by JAPAN
SOLDERLESS TERMINAL MFG.
CO., LTD)
Dimensions (mm) Models
1.25-YS4A
2-YS4A
V1.25-YS4A
V2-YS4A
B<7.2
d
2 >4