12
(4) Remove the socket from the DIN rail by pulling the Socket Lock Release (at the bottom of the socket)
down.
(Fig. 4-3)
5. Wiring
Warning
Turn the power supply to the instrument off before wiring or checking.
Working on 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 remnants in the instrument, because they could cause a fire and/or malfunction.
• Use a solderless terminal with an insulation sleeve in which the M3 screw fits when wiring the
instrument.
• Tighten the terminal screw using the specified torque. If excessive force is applied to the screw
when tightening, the terminal screw may be damaged.
• This controller does not have a built-in power switch, circuit breaker or fuse. Therefore, it is
necessary to install them in a circuit near the external controller.
(Recommended fuse: Time-lag fuse, rated voltage 250 V AC, rated current 2 A)
• For a 24 V AC/DC power source, do not confuse polarity when using direct current (DC).
• Do not apply a commercial power source to the sensor connected to the input terminal nor allow
the power source to come into contact with the sensor.
• Use a thermocouple and compensating lead wire that correspond to the sensor input specifica-
tion of this controller.
• Use the 3-wire RTD corresponding to the input specification of this controller.
• When using a relay contact output type, externally use a relay according to the capacity of the
load to protect the built-in relay contact.
• When wiring, keep input wires (thermocouple, RTD, etc.) away from AC sources or load wires.
5.1 Lead Wire Solderless Terminal
Use a solderless terminal with an insulation sleeve in which an M3
screw fits as follows.
For the sockets with finger-safe & screw fall prevention functions,
the ring terminals are unusable.
The tightening torque should be 0.63 N•m.
Solderless
Terminal
Manufacturer
Model
Y type
Nichifu Terminal Industries CO.,LTD.
TMEV1.25Y-3S
Nichifu Terminal Industries CO.,LTD.
TMEV 1.25-3
Ring type
Japan Solderless Terminal MFG CO.,LTD.
V1.25-3
(Fig. 5.1-1)
5
.9
m
m
o
r
le
s
s
4 mm or less
4.8 mm
or more
3
.2
m
m
o
r
m
o
re
5
.9
m
m
o
r
le
s
s
4 mm or less
4.8 mm
or more