Sonic Alert Digital Program Controller DCP301 - Manual (Page 38)

Chapter 4. WIRING
4-6
4-5 Connecting the Ground and Power Supply
■ Power supply
Connect the DCP301 to a single-phase power supply for controllers, and take measures
to prevent the influence of electrical noise.
1
3
2
1
2
E
3
4
GND
~
Instrument
power supply
Other circuits
GND GND
Recommended
line filter
81446364-001 DCP301
200/200V,
100/100V
insulated transformer
• 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: 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: 2mm sq. min soft-copper wire (AWG14)
Cable length: Max. 20m
3
FG
terminal
DCP301
GND terminal plate
GND (100 Ω max.) Shielded cable
Use only the FG terminal (3) on the DCP301 for grounding. Do not ground across
other terminals.
Handling Precautions
Handling Precautions