Mitsubishi Electronics Mitsubishi Digital Electronics Electronic Accessory Q02CPU ユーザーズマニュアル

 

 

 

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MELSEC-Q

 

9   LOADING AND INSTALLATION 

 

9.6.2 Connecting to the power supply module 

The following diagram shows the wiring example of power lines, grounding lines, etc. 

to the main and extension base units. 

 

AC

100/110VAC

Fuse

24VDC

AC
DC

Connect to 24VDC terminals
of I/O module that
requires 24VDC internally.

Extension cable

Ground wire

Grounding

Main base unit

(Q38B)

Q61P-A1

CPU module

Extension base unit

(Q68B)

Q61P-A1

I/O

100VAC

ERR

FG
LG
INPUT
100-120VAC

FG
LG
INPUT
100-120VAC

ERR

1

 

 

 

POINTS 

 

(1) Use the thickest possible (max. 2 mm

2

 (14 AWG)) wires for the 100/200 VAC 

and 24 VDC power cables. Be sure to twist these wires starting at the 

connection terminals. To prevent a short-circuit should any screws loosen, use 

solderless terminals with insulation sleeves. 

 

(2) When the LG terminals and FG terminals are connected, be sure to ground the 

wires. Do not connect the LG terminals and FG terminals to anything other than 

ground. If LG terminals and FG terminals are connected without grounding the 

wires, the PLC may be susceptible to noise. 

In addition, since the LG terminals have potential, the operator may receive an 

electric shock when touching metal parts. 

(3)  1 An error cannot be output from the ERR terminal of the power supply 

module loaded on the extension base.  

To output an error, use the ERR terminal of the power supply module 

loaded on the main base unit.