Mitsubishi Electric C70 Connection Manual page 51

MITSUBISHI CNC
2. General Specifications
(3) FG terminal
Ground terminal connected to the shield pattern of the printed circuit board.
(4) LG terminal
- Grounding for the power supply filter.
- This terminal has potential of 1/2 of the input voltage for AC input (Q61P, Q64P and Q64PN).
- This is also a protective earth terminal (PE).
(5) Power input terminals
- Power input terminals connected to a power supply of 100VAC or 200VAC. (Q64P and Q64PN)
- Power input terminals connected to a power supply of 24VDC. (Q63P)
- Power input terminals connected to a power supply of 100-200VAC.(Q61P)
(6) Terminal screw
M3.5 × 7 screw
(7) Terminal cover
Protective cover of the terminal block
(8)
Module fixing screw hole
Used to fix the module to the base unit.
M3 × 12 screw (user-prepared) (Tightening torque: 0.36 to 0.48 N m)
(9)
Module loading lever
Used to load the module into the base unit.
(Note1) Q63P is dedicated for inputting a voltage of 24VDC. Q63P may break down unless connected to 24VDC for
inputting or with reversed polarity.
(Note2) Q64P automatically switches the input range 100/200VAC.
Therefore, it is not compatible with the intermediate voltage (133 to 169VAC).
The CPU module may not work normally if the above intermediate voltage is applied.
Also note that Q64P may break down when connected to the power supply whose voltage or frequency is out
of the specifications.
(Note3) Ensure that the earth terminals LG and FG are grounded. (Ground resistance: 100 or less)
Since the LG terminals have potential of 1/2 input voltage, the operator may receive an electric shock when
touching metal parts.
(Note4) When Q61P, Q63P, Q64P or Q64PN is loaded on the extension base unit, a system error cannot be detected
by the ERR terminal. (ERR terminal is always OFF.)
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