Mitsubishi Electric NZ2GF-ETB, User Manual

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(2) Precautions
Take the following precautions when wiring the power supply.
• Considering the rated current and inrush current of the power supply part, connect a circuit breaker having
an appropriate sensing property or an external fuse causing proper blowout. (A 10A circuit breaker or
external fuse is recommended.)
• To minimize a voltage drop, use thickest possible power cables (up to 2mm
2
), and connect them in the
shortest distance by finely twisting them.
• Do not install the power cables together with the main circuit lines (high voltage and large current) and
Ethernet cables. Keep a distance of 100mm or more between them.
• After wiring, always attach the included terminal cover to the power supply part, and do not touch any
terminal while the power is on or the module is operating.
• Use a Class 2 power supply for the external power supply which inputs power to the power supply part.
• Use solderless terminals when wiring the terminal block of the power supply part. To prevent short-circuit
that may occur when a screw become loose, use a solderless terminal with insulation sleeve, of which
thickness is 0.8mm or less. Up to two solderless terminals can be connected to one terminal block.
• Use UL-approved solderless terminals and, for processing, use a tool recommended by their manufacturer.
• Tighten the terminal screws on the power supply part within the applicable torque range of 0.66 to 0.89N

m.
• Use the following wires for connection to the power supply part.
• An input of a signal of a different voltage level may cause malfunction or equipment failure.
• When supplying power to the power supply part, select a power supply having sufficient power capacity.
(Double power capacity or more is recommended.)
For compliance with the EMC directive, refer to "EMC and Low Voltage Directives" in this manual. (

Page 231, Appendix
8)
Applicable wire size Material Temperature rating
0.75 to 2mm
2
(18 to 14AWG) (stranded wire)
Copper 75

or higher
Terminal block
Solderless terminal with
insulation sleeve