Yaskawa 120 Series I/O Modules - Manual (Page 9)

1 Introduction and Precautions
1.2.2 Installation Precautions
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1.2.2 Installation Precautions
Abide by the following precautions when installing MEMOCON systems.
• The installation environment must meet the environmental conditions given in prod-
uct catalogs and manuals. Using the GL120 and GL130 in environments subject to
high temperatures, high humidity, excessive dust, corrosive gases, vibration, or
shock can lead to electrical shock, fire, or faulty operation. Do not use the GL120
and GL130 in the following locations.
• Locations subject to direct sunlight or ambient temperatures not between 0 °C
and 60 °C.
• Locations subject to relative humidity in excess of 95%, or condensation
because of rapid changes in humidity.
• Locations subject to corrosive or flammable gas.
• Locations that would subject the GL120 and GL130 to direct vibration or
shock.
• Locations subject to contact with water, oil, chemicals, and so on.
• Install Modules as described in the user’s manuals.
Faulty or inappropriate installation may result in detachment or malfunction.
• Do not remove the connector covers from the Module connectors on the Mounting
Base slots where no Modules are installed.
The presence of any foreign matter in a Module connector may cause the
GL120 and GL130 to malfunction.
• Make sure that all mounting screws for the Modules are securely tightened.
Loose screws may cause malfunction of the GL120 and GL130.
• Make sure that all mounting screws for the terminal block are securely tightened.
Loose screws may cause a malfunction of the GL120 and GL130.
• When installing the terminal block for the AC I/O Modules, turn OFF the AC power
supply to the I/O Modules for inputting signals and for driving load.
Installing a terminal block with the AC power being supplied to the terminal of
the external power supply for the AC I/O Modules may cause an electric shock if
the power supply terminals are touched.
• When using a single-phase AC power supply (100/200 VAC) for driving loads of the
Relay Contact Output Module, turn OFF the AC power to the Modules for driving
loads before installing the terminal block for the Modules.
Installing a terminal block with the AC power being supplied to the external
power supply terminal of the Relay Contact Output Module may cause an elec-
tric shock if the power supply terminals are touched.
• Make sure that all cable connectors for the Module are securely inserted and tight-
ened.
Incorrect connections may cause malfunction of the GL120 or GL130.
CAUTION
CAUTION
CAUTION
CAUTION
CAUTION
CAUTION
CAUTION
CAUTION