Sonic Alert Digital Program Controller DCP301 - Manual (Page 33)

Chapter 4. WIRING
4-1
Chapter 4. WIRING
4-1 Wiring Precautions
Wire the DCP301 properly according to predetermined standards. Also
wire the DCP301 using designed power leads according to recognized
installation methods.
Failure to do so might cause electric shock, fire or faulty operation.
Do not allow lead clippings, chips or water to enter the DCP301 case. Do-
ing so might cause fire or faulty operation.
Inputs to the current input terminals (31) and (33) on the DCP301 should
be within the current and voltage ranges listed in the specifications.
Failure to do so might cause electric shock or faulty operation.
Firmly tighten the terminal screws at the torque listed in the specifications.
Insufficient tightening of terminal screws might cause electric shock or fire.
Do not use unused terminals on the DCP301 as relay terminals.
Failure to do so might cause electric shock, fire or faulty operation.
We recommend attaching the terminal cover (sold separately) after wiring
the DCP301. Failure to do so might cause electric shock, fire or faulty op-
eration.
Use the relays on the DCP301 within the service life listed in the specifica-
tions.
Continued use of the relays after the recommended service life might cause
fire or faulty operation.
Use induced lighting surge preventive device if there is the risk of power
surges caused by lightning.
Failure to do might cause fire or faulty operation.
WARNING
Before connecting the DCP301 to the measurement target or external con-
trol circuits, make sure that the FG terminal is properly grounded (100
Ω
max.).
Failure to do so might cause electric shock or fire.
Before wiring, or removing/mounting the DCP301, be sure to turn the power
OFF. Failure to do so might cause electric shock.
Do not touch electrically charged parts such as the power terminals. Doing
so might cause electric shock.
CAUTION