Hakko MONITOUCH V7 series - Manual (Page 39)

1-22 8. Power Supply Cable Connection
• Keep cables of 100 VAC and 24 VDC sufficiently away from high-voltage, large-current
carrying cables.
• Be sure to attach the terminal cover to the terminal block.
Notes on Usage of 100-240 VAC Specifications
• Generally, an isolating transformer improves noise resistance. However, if the display
unit is far away from the secondary port of the transformer and noise gets mixed in, an
isolating transformer becomes unnecessary.
• If any power voltage fluctuation caused by noise is expected, it is recommended that a
voltage stabilizer (effective in noise resistance) be used.
Grounding
• An independent earth pole must be used for
MONITOUCH.
• Use a cable which has a nominal cross section of more
than 2 mm
2
for grounding.
• Set the grounding point near the MONITOUCH to shorten
the distance of grounding cables.
• When the unit is grounded along with other machines or is grounded to a part of a
building, it may be adversely affected.
• If any input-output error occurs due to the grounding, detach the FG terminal (*) from
the ground.
* When the V7 unit is attached to the mounting panel, the fixtures and frame grounds (FG)
are connected. To detach the FG terminal from the ground, attach the insulating sheet
to the fixtures and the mounting panel for insulation.
- For V708/V708i:
Attach the terminal cover
(supplied) to the terminal block.
- For V710/V710i/V712/V712i:
When closing the terminal cover, hold
one end of the cover as shown below.
Terminal cover
Press either end.
Power
supply
Insulation transformer
or
Stabilized transformer
To V710/V710i/V712/V712i
1.25 mm
2
Twist the cables.
CAUTION
Be sure to establish a ground of MONITOUCH. (The level of grounding
resistance should be less than 100
Ω.)
V7 series unit
Other
equipment