Installation And Removal Of The Dustproof Cover - Mitsubishi Electric MELCEC Q Series User Manual

9. LOADING AND INSTALLATION
9.1.3

Installation and removal of the dustproof cover

WARNING
Attach the dustproof cover to the following modules to prevent foreign matter from entering
them.
• Module to be mounted on the right side of the QCPU-A.
• Module to be mounted on the QA1S51B
Be sure to attach the dustproof cover. Otherwise, foreign matter will enter the I/O module,
causing a failure.
Procedures for installing and removing the dustproof cover are described below.
(1)
When setting up the system, do not allow any empty slot on the base unit.
If any slot is left empty, be sure to use a blank cover (A1SG60) or a dummy module
(A1SG62) for it.
Otherwise, internal parts of the module may be flied in the short circuit test or when
an overcurrent or overvoltage is accidentally applied to the external I/O section.
Attachment
I/O module
Dust-proof cover
Insert the dustproof cover into the connector- or terminal-side groove of the I/O
module first as shown in the figure, and then push the dustproof cover.
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