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4-6
Chapter 4. WIRING
4 - 5
Connecting the Ground and Power Supply
■
Power supply
Connect the DCP32 to a single-phase power supply for instrumentation, and take
measures to prevent the influence of electrical noise.
Handling Precautions
・
If the power supply generates a lot of electrical noise, we recommend
inserting an insulating transformer in the power circuit and using a line
filter.
Recommended line filter:
Yamatake Corporation, model No. 81446364-001
・
After providing anti-noise measures, do not bundle primary and
secondary power leads together, or pass them through the same piping
or wiring duct.
■
Ground
When it is difficult to ground shielded cable, prepare a separate ground terminal
(earth bar).
Ground type:
100
Ω
max.
Ground cable: 2 mm sq. min. annealed copper wire (AWG14)
Cable length: Max. 20 m
1
3
2
1
2
E
3
4
GND
Instrument
power supply
90 to 264 Vac
50/60 Hz
Other circuits
GND
GND
Recommended
line filter
81446364-001
DCP32
200/200 V
100/100 V
Insulated transformer
3
FG
terminal
DCP32
GND terminal plate
GND (100
Ω
min.)
Shielded cable
Handling Precautions
Use only the FG terminal
3
on the DCP32 for grounding. Do not ground
across other terminals.