Mitsubishi Electric LCPU-U-HW Safety Manuallines page 55

(7) CPU module (Positioning function)
To use the positioning function, the length of the cable to be
connected to external devices must be as shown below.
• Positioning pulse output: 2m or less
• General-purpose output: 30m or less
(8) I/O modules
• Install the DC power in the same control panel with the modules.
• When a cable for the DC power is installed extending outside the
control panel, use a shielded cable.
• A cable for the DC power must be 30m or less in length.
• When the number of relay operations is more than 4 times per
minute, take measures such as using a surge suppressor.
(9) High-speed counter module
• Install the DC power in the same control panel with the modules.
• When a cable for the DC power is installed extending outside the
control panel, use a shielded cable.
• Keep the length of cables connected to external devices to 30m
or less.
(10) Positioning module
Install the DC power in the same control panel with the modules.
(11) Temperature control module
Install the DC power in the same control panel with the modules.
(12) Flexible high-speed I/O control module
Take following measures.
• Attach a ferrite core to the cable for the DC power connected to
the flexible high-speed I/O control module, and to the cable for
the DC power connected to a controller. For a ferrite core, the
ESD-SR-250 (manufactured by NEC TOKIN Corporation) is
recommended.
• Install the DC power in the same control panel where the module
is installed.
• Use a shielded cable when a DC power cable is laid out of the
control panel.
• The length of the cable connected to an output part or external
devices must be 2m or less for open collector output, and 10m
or less for differential output.
• The length of the cable connecting an input part and external
devices must be 30m or less.
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