20
2
Installation & Connection
20
In
sta
llation
&
Conn
ectio
n
Chapter
2
Warning
●
To avoid electric shock, connect the indicator when power is off.
●
The included AC cable is for use in Japan and the rating is AC125V, 7A. Prepare a
separate AC cable if the indicator is used at a voltage higher than the rating or is
used overseas.
●
The F325 has no power switch. Make sure to install a breaker and so on as
needed.
●
Be sure to ground a protective grounding terminal in order to prevent electric shock
and trouble arising from static electricity. (A case and protective grounding terminal
are in continuity.)
Do not use screws other than ones (with bind M4x8-tooth captive washer) for
installing the main unit.
Caution
●
When inserting breakers and so on into power lines, use ones with a stationary
current rating per one unit of 0.2A or more. Rush current flows when power supply
is switched on. Select breakers appropriate for actual use taking the following rush
currents into consideration.
<Rush currents>
At AC100V: 2A within 1msec
At AC200V: 4A within 1msec
●
Allowable rush currents differ considerably depending on the manufacturer and
series even for breakers of the same rated current. Selecting breakers based only
on the stationary rated currents will not lead to a selection of appropriate breakers.
Consult with breaker manufacturers, showing them the above rush currents as
needed.
●
When power supply is switched ON and OFF successively, the circuit that controls
internal rush currents will not function properly, a current larger than the above rush
currents will flow, and built-in fuses may blow. Wait five seconds or more before
turning the power back on.
●
The above rush currents indicate the current values that may flow if a supply
source is capable of supplying, but not the current values required for startup
operation.
●
Rush currents for cases in which the number of connecting units is increased at
one time are values multiplied by the number for both a current value and time (at
AC100V: 4A 2msec for two units, 6A 3msec for three units). If a current exceeds
the supply capability of the power supply source, the current value stays at the
supply capability limit and the time for which the current flows extends. In this case
(excluding cases such as where a current is stopped by the current limit of a supply
source), the extended time depends on the condition of the supply source power.
Make sure to use it after checking carefully that no trouble occurs at the actual
machine in use.