[DB600] General Instruction Manual
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2-3-4
Basics of wiring
Warning
To avoid severe accidents, make sure to read and understand the
followings and use the instrument.
Electric shock may occur, make sure to turn OFF the power and perform
the panel mounting and/or wiring operation.
Connecting to the terminal
1.
For wiring of terminal use crimp style terminal with insulation sleeve. Always use O type terminal
to secure safety of power supply terminal. For other terminals O type terminal is also recommend.
When the terminal screws are
tightened the torque is “0.5 to 0.6N
・
m”. If a torque exceeding this
value is applied, terminal screw gets damaged hence pay attention.
Pay attention to the crimp style terminals etc. not to touch the terminal next to it.
Power terminal
2.
In power supply, make sure to place power switch of this instrument and circuit breaker the within
3m so that they are easily reachable.
Clearly mark that this switch is the cutoff device for the
power of this instrument.
Wiring of power source, use a cable which is equal to or greater than 600V vinyl insulated cable
(Rating more than 1A AC).
To avoid malfunctions use good quality single phase power source with little voltage change and
without wave form distortion and noise. If the noise is large insert insulation transformer or use
noise filter. Also, wiring of noise filter output and power terminal should be done in the shortest.
If there is a possibility of lightning surge interference from the outside, install an appropriate surge
suppressor circuit.
For instrument with 24V power specifications, provide power from the SELV power (safety
secured power source).
SELV power means
“the power has two layers or is insulated strongly between input and output,
and output voltage is 30Vrms and 42.4V peak or less than DC60V
”.
！
O type
Y type
Insulation sleeve
Insulation sleeve
B
B
Size
A
A
A
：
3.2mm or more
B
：
6.0mm or less
Instrument
Within 3m
Circuit breaker
Power source
Switch
