9 LOADING AND INSTALLATION

9.3.2 Instructions for mounting the base unit

MELSEC-Q

When mounting the PLC to an enclosure or similar, fully consider its operability, maintainability and environmental resistance.

(1) Module mounting position

For enhanced ventilation and ease of module replacement, leave the following clearances between the module top/bottom and structure/parts.

(a) In case of main base unit or extension base unit

Indicates the panel top, wiring duct or any part position.

30mm (1.18 inch) or more 1

Panel

30mm (1.18 inch) or more

PLC

Door

20mm

(0.79 inch) or more 3

5mm (0.20 inch) or more 2

5mm (0.20 inch) or more

1 : For wiring duct with 50mm (1.97 inch) or less height. 40mm (1.58 inch) or more for other cases.

2 : 20mm (0.79 inch) or more when the adjacent module is not removed and the extension cable is connected.

3 : 80mm (3.15 inch) or more for the connector type.

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