Yaskawa 120 Series I/O Modules - Manual (Page 10)

1.2 Precautions
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1.2.3 Removal Precautions
• Always turn OFF the AC power supply to the AC I/O Modules that are used for
inputting signals and driving loads before removing the terminal block from the AC I/
O Modules.
Removing a terminal block with AC power to the external power supply terminal
of the AC I/O Modules may cause an electric shock at touching the power sup-
ply terminals.
• 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 removing the terminal block for the Modules.
Removing 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.
• When inserting or removing an AC I/O Module while the AC power supply is turned
ON, install a safety switch for each Module and always turn this safety switch OFF
to turn OFF the AC power supply to the Module.
Inserting or removing an AC I/O Module while AC power is being supplied may
result in an electric shock at touching the power supply terminals.
• When using a single-phase AC power supply (100/200 VAC) for driving the loads of
the Relay Contact Output Module, install a safety switch for each Module. Before
inserting or removing the Relay Contact Output Module, always turn this safety
switch OFF to turn OFF the AC power supply to the Module.
Inserting or removing a Relay Contact Output Module while AC power is being
supplied may result in an electric shock at touching the power supply terminals.
CAUTION
CAUTION
CAUTION
CAUTION