Mitsubishi Electronics QJ71C24/-R2, QJ71C24N, SH-080007 MELSEC-Q, 4 SETTINGS AND PROCEDURES PRIOR TO OPERATION

4 SETTINGS AND PROCEDURES PRIOR TO OPERATION

MELSEC-Q

4 SETTINGS AND PROCEDURES PRIOR TO OPERATION

This chapter explains the settings and procedures required before starting a system that uses the Q series C24.

POINT

(1)When using the Q series C24, please read the safety precautions at the beginning of this manual.

(2)The installation and setup methods of the Q series C24 are the same as those for CPU modules.

(3)For module installation and setup, see the user's manual for the PLC CPU used.

4.1Handling Precautions

4	The following explains the precautions for handling the Q series C24:

(1)Do not drop the module or subject it to heavy impact since it is made of resin.

(2)Tighten the module terminal and fixing screws within the specified tightening torque range as follows:

	Screw location	Tightening torque range
	RS-422/485 terminal block terminal screws (M3 screw)	0.42 to 0.58 N · m
	RS-422/485 plug-in connector socket terminal screw for	0.20 to 0.25 N · m
	QJ71C24N-R4 (M2 screw)	0.20 to 0.25 N · m
	QJ71C24N-R4 (M2 screw)
	Module fixing screw (normally not required) (M3 screw) ( 1)	0.36 to 0.48 N · m

1 A module can be easily fixed to a base unit using the hooks in the upper part of the module. However, it is recommended that the module be fixed using the module mounting screws when it is used in a place subject to vibration or impact.

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