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5
SETTINGS AND PROCEDURES BEFORE 
OPERATION
5.1 Q Series Safety Relay Module
5.1.4 Mounting/removal
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5.1.4
Mounting/removal
For mounting/removing the Q series safety relay module on/from the base unit, refer to the 
QCPU User's Manual (Hardware Design, Maintenance and Inspection) together.
When installing a programmable controller to a control panel or similar, fully consider its 
operability, maintainability, and environmental resistance.
(1) Installation position
Keep the clearances shown below between the top/bottom faces of the modules and 
the control panel or other parts so that good ventilation is ensured and the modules 
can be easily replaced.
 * 1: A clearance required when the wiring duct is 50mm or less in height A 40mm or more clearance is 
required when the wiring duct is longer.
Figure 5.3 Installation position
*1
Ceiling of the control panel, 
wiring duct or any other parts
5mm or more
5mm or more
30mm or more
30mm or more
20mm 
or more
Programmable 
controller
Door
Control 
panel