Yaskawa 120 Series I/O Modules - Manual (Page 235)

6 Installation and Wiring
6.1.2 Installing I/O Modules with Terminal Blocks
6-8
3) Removing the Terminal Block from the Module
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.
Use the following procedures to remove the terminal block from the Module.
a) Turn OFF the power to the Module.
b) Remove the terminal block from the Module as shown below.
(1) Loosen two terminal-block mounting screws alternately.
(2) Remove the terminal block from the Module
4) Removing Modules
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 p ower 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.
CAUTION
CAUTION
Terminal block mounting screw
Terminal block mounting screw
Terminal block
Terminal block
Module Remove
CAUTION