Hitachi FL.NET, User Manual

Page: 5 / 307

1. Installation Precautions
DANGER
If an emergency stop circuit, interlock circuit, or similar circuit is to be
formulated, it must be positioned external to this module. If you do not
observe this precaution, equipment damage or accident may occur when this
module becomes defective.
Ensure that the employed external power source has overvoltage and
overcurrent protection functions.
The external power source voltage may create an electric shock hazard. If
you disconnect/connect the module or cable with the power supply switched
on, you may inadvertently touch a power supply terminal and receive an
electric shock or the equipment may become damaged due to short circuit or
noise. Switch off the power supply before disconnecting/connecting the
module or cable.
CAUTION
Use the module in an environment specified in the catalog and manual.
If you use the module in an environment where the module is subjected to high
temperature, high humidity, dust, corrosive gas, vibration, or impact, a risk of
electric shock, fire, or malfunction may result.
Observe the installation procedure stated in the manual.
If the module is improperly installed, it may drop, become defective, or
malfunction.
Do not allow wire cuttings or other foreign matter to enter the module.
The entry of foreign matter in the module may result in a fire or cause the
module to become defective or malfunction.
When the module is to be positioned at a location where it may become wet
with water, place it within a drip-proof enclosure to prevent it from becoming
defective.
The module may become defective due to a high temperature, which may
result from heat dissipation failure. It may also malfunction due to
electromagnetic interference from nearby equipment. For heat dissipation
and electromagnetic radiation minimization, provide the specified clearances
among the module, its enclosure, and neighboring equipment.