
Chapter 3 Installation and Wiring
3-1
Chapter 3 Installation and Wiring
3.1 Installation
3.1.1 Installation environment
The system keeps a high reliability, irrespective of the installation environment. However, to guarantee the reliability and stability, make
sure to keep the following cautions.
1) Environmental conditions
(1) Install in a control panel resisting to moisture and vibration.
(2) Free of any continuous impact or vibration.
(3) Not exposed to direct sunrays.
(4) No condensation from sudden temperature fluctuation.
(5) Ambient temperature range between 0 ~ 55
°
C.
(6) Relative humidity between 5 ~ 95%.
(7) Free of any corrosive gas or flammable gas.
2) Installation construction
(1) When boring a screw hole or executing wiring construction, any wiring impurities should not be inserted to the PLC.
(2) The system should be installed in a place easily accessible.
(3) Do not install the system on a same panel of a high voltage device.
(4) It should be 50mm and more away from wiring duct or proximate modules.
(5) Grounding on a position where noise is lower than the specified level.
3) Heat protective design of control panel
(1) If installing the PLC in an air-tight control panel, it needs heat-protective(control) design considering the heat from the PLC as well as
other devices. If ventilating by vent or fan, inflow of dust or gas may affect the performance of the PLC system.
(2) Install a filter or use a closed heat exchanger.