Chapter 11 Installation and Wiring
11-5
(6) Terminal Block
Check the compression state of terminal block and pay attention not to enter the fragments of cable
into PLC in case of wiring of terminal block or processing the screw hole. If not, it may cause the
abnormal operation or the failure.
(7) Except the examples above, do not apply deep impact to I/O module or remove PCB board from the case.
2) Notices in Attaching Base
Here describes the notices in case of attaching PLC to the control panel.
(1) Keep the distance enough between the upper part of module and the structures or parts in order to
make a ventilation good and change the module easily.
(2) Avoid the longitudinal connection or horizontal attachment considering a ventilation.
(3) Use the panel different from the vibration sources of large sized electronic contactor or no fuse breaker
etc., or keep the clearance when installing.
(4) Install the wiring duct if necessary. But cares should be taken for the following notices in case the
dimension of the upper or lower part of PLC is smaller than that of Figure 11.1.
•
In case of installing on the upper part of PLC, keep the height of wiring duct less than 50mm for
good ventilation. And keep the distance from the upper part of PLC enough to press the hook on the
upper part of Base.
•
In case of installing on the lower part of PLC, consider the connection of optical cable or coaxial
cable and minimum radius of cables.
(5) PLC should be installed to the direction as shown on the following Figure for good ventilation against
radiation.