Chapter 10 Installation and wiring MASTER-K
10-5
⑥ Terminal block
Check its fixing. During drilling or wiring, do not allow any wire scraps to enter into the
PLC. It can cause malfunction and fault.
⑦ Be cautious that strong shock does not applied to the I/O module. Do not separate
the PCB from its case.
2) 2) Base board mounting instructions
The following explains instructions for mounting the PLC onto the control panel.
① Allow sufficient distance from the upper part of the module for easy module
replacement.
② Do not mount the PLC in a vertical or horizontal position because it affects on
ventilation.
③ Do not mount the base board together with a large-sized electromagnetic contactor or
no-fuse breaker, which produces vibration, on the same panel. Mount them on
different panels, or keep the base board away from such a vibration source.
④ Mount the wire duct as it is needed.
⑤ If the clearances are less than those in Fig 10.1, follow the instructions shown below.
• If the wire duct is mounted on the upper part of the PLC, make the wiring duct clearance
50mm or less for good ventilation. Also, allow the distance enough to press the hook in
the upper part from the upper part of the PLC.
• If the wire duct is mounted on the lower part of the PLC, make optic or coaxial cables
contact it and consider the minimum diameter of the cable.
⑥ To protect the PLC from radiating noise or heat, allow 100 mm or more clearances
between it and parts. Left or right clearance and clearance from other device in the
left or right side should be 50 mm or more.
board
[Fig. 10.1] PLC mounting
board
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