16
6. Wiring
Warning
Turn the power supply to the unit off before wiring.
Working or touching the terminal with the power switched on may result in
severe injury or death due to Electric Shock.
Caution
• Do not leave wire chips in the unit, because they could cause fire, malfunction or trouble.
• When wiring terminals of the NCL-13A, use ferrules with an insulation sleeve
applicable to the connecting plugs.
• A screw type plug for lines (Model: Terminal block ATB-001-1, sold separately) is required
for wiring of power and communication lines. Use the ferrules with an insulation sleeve
in which an M2 screw fits.
• Tighten the terminal screw within the specified torque. If excessive force is applied to
the screw when tightening, the screw or case may be damaged.
• Do not apply a commercial power source to the sensor connected to the NCL-13A nor
allow the power source to come into contact with the sensor, as the input circuit may
be burnt out.
• Use a thermocouple, compensating lead wire and RTD (3-wire) in accordance with the
input of this unit.
• With the relay contact output type, externally use a relay according to the capacity of
the load to protect the built-in relay contact.
• Keep the input wire (TC, compensating lead wire, etc.), power line and load wire away
from one another.
• To prevent the unit from harmful effects of unexpected level noise, it is recommended
that a surge absorber be installed between the electromagnetic switch coils.
• Externally install a protecting circuit in case there is unexpected trouble due to the
environment, aging, etc.
• This unit has neither a built-in power switch nor a fuse. Therefore, it is necessary to
install them in the circuit near the unit externally.
• The supply voltage of this unit is 24V DC. Do not confuse the polarity.
