Azbil DCP31 - 4 - 5 Connecting the Ground and Power Supply


Power supply
ConnecttheDCP31toasingle-phasepowersupplyforcontrollers,
andtakemeasurestopreventtheinfluenceofelectricalnoise.
Handling Precautions
• If the power supply generates a lot of electrical noise, we recom-
mend inserting an insulating transformer in the power circuit
and using a line filter.
Recommended line filter: Azbil 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soft-copperwire(AWG14)
Cablelength: Max.20m
Handling Precautions
Use only the FG terminal ( ) on the DCP31 for grounding. Do not
ground across other terminals.
1
3
2
1
2
E
3
4
GND
Instrument
power supply
Other circuits
GND GND
Recommended
line lter
81442557-001
DCP31
200/200 V,
100/100 V
insulated transformer
3
FG
terminal
DCP31
GND terminal plate
GND (100 Ω min.)
Shielded cable
4-6
Chapter 4. WIRING
4 - 5 Connecting the Ground and Power Supply