Installation - Hitachi EHV+ Series Applications Manual

Chapter 4 Installation
For use in safety, avoid installing the PLC in the following locations.
- Excessive dusts, salty air, and/or conductive materials (iron powder, etc.)
- Direct sunlight
- Temperature less than 0°C or more than 55°C
- Dew condensation
- Humidity less than 20% or more than 90%
- Direct vibration and/or impact to the unit
- Corrosive, explosive and/or combustible gasses
- Water, chemicals and/or oil splashing on the PLC
- Close to noise emission devices
4.1

Installation

(1) Installing location and environment
(a) Install the PLC in Use the environment specified in the "2.1 General Specifications".
(b) Mount the PLC onto the metal plate.
(c) Install the PLC in a suitable enclosure such as a cabinet which opens with a key, tool, etc.
(2) Installation of a base unit
(a) Precaution when installing the base unit
1] Fix the base unit securely with screws in 4 places (M4, length 20mm (0.79in.)or longer) or DIN rail.
2] In order to keep within allowable ambient temperature range,
a) Ensure sufficient space for air circulation. (50mm (1.97in.) or more at top and bottom, 10mm (0.39in.)
or more at right and left)
b) Do not install close to equipment that generates a lot of heat (heater, transformer, large-capacity
resistance, etc.).
c) If ambient temperature is more than 55°C, install a fan or a cooler so that the ambient temperature
becomes below 55°C.
3] Do not install inside a cabinet with high-voltage equipments installed.
4] Install 200mm (7.87in.) or more away from high-voltage wires or power wires.
5] Do not install the PLC upside down in vertical nor in horizontal.
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