
8. LOADING AND INSTALLATION
8 - 11
MELSEC-A
8.6
Installing and Removing the Dustproof Cover
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DANGER
•
When configuring the system, do not leave any vacant slots on the base.
Should there be any vacant slots, be sure to use a blank cover (A1SG60) or a dummy module
(A1SG62).
When the extension base A1S52B, A1S55B, or A1S58B is used, be sure to install the provided
dustproof cover to the module installed in slot 0 without fail.
If a short-circuit test is performed, or overcurrent or overvoltage is accidentally applied to the
external I/O area, the internal parts of the module may be scattered.
When an A1S52B(S1), A1S55B(S1), or A1S58B(S1) is used, it is necessary to
mount the dustproof cover, which is supplied with the base, to the I/O module
loaded at the left end to prevent foreign matter from entering the I/O module. If the
dustproof cover is not mounted, foreign matter will enter the I/O module, resulting in
malfunction. The following explains the installation and removal of the dustproof
cover.
(1)
Installation
I/O module
Dustproof cover
To fit the dustproof cover to the I/O module, first insert it at the terminal side and
then press it against the I/O module as shown in the figure.
Содержание A1SH
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