Mitsubishi Electric MELSEC iQ-R Series Configuration Manual page 12

[Wiring Precautions]
WARNING
● Shut off the external power supply (all phases) used in the system before installation and wiring.
Failure to do so may result in electric shock or cause the module to fail or malfunction.
● After installation and wiring, attach a blank cover module (RG60) to each empty slot and an included
extension connector protective cover to the unused extension cable connector before powering on the
system for operation. Failure to do so may result in electric shock.
[Precautions for using flexible high-speed I/O control modules]
● When connecting a differential output terminal to a differential receiver of a drive unit, connect the
high-speed output common terminal to the differential receiver common terminal of the drive unit.
Failure to do so may cause the module to fail or malfunction because of the potential difference that
occurs between the high-speed output common terminal and the differential receiver common
terminal.
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