Hitachi MICRO-EHV+ - Page 162

Chapter 4 Installation
4 – 8
(8) Wiring to the unit terminal
NF
Wiring for the power supply
Use a 2mm
2
(0.031in
2
.) cable and twist it.
Leave a distance of 100 mm (3.94 in.) or more from
the signal cable and 200mm (7.87 in.) or more from
the power line.
Shielded insulation
transformer
Use a cable 2mm
2
(0.0031 in
2
.) or more and
wire it within a distance
of 20m (65.62 ft.).
Ground wiring
Always connect a noise
filter
Class D grounding
Use cable 0.75mm
2
(0.0011
in
2
.) or less.
Leave a distance of 200 mm
(7.87in.) or more from the
power line and do not have it
running next to the power
cable.
I/O signal cable
Expansion cable
Always segregate power
line. I/O signal and power
supply cable.
Metal plate
Implement class D grounding.
Outer hull (cabinet)
Implement class D grounding.
AC Power
Figure 4.7 Example of wiring