Wiring - Panasonic KT2 Instruction Manual

4. Wiring

Warning
Turn the power supply to the instrument off before wiring.
Working on or touching the terminal with the power switched on may result in severe injury
or death due to Electric Shock.
(Fig. 4-1)
Notice
• To extend a thermocouple's lead wire, be sure to use a compensating lead wire in accordance with
the sensor input specification. (If any other compensating lead wire is used, a temperature indication
error may be caused.)
• Use the 3-wire RTD which corresponds to the input specification of this controller.
• This controller does not have a built-in power switch, circuit breaker or fuse. Therefore, it is
necessary to install them in the circuit near the external controller.
(Recommended fuse: Time-lag fuse, rated voltage 250V AC, rated current 2A)
• When using a 24V DC for the power source, do not confuse polarity.
• 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
to avoid external interference.
• 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.
Lead wire solderless terminal
Use a solderless terminal with an insulation sleeve in which an M3 screw fits as shown below.
The torque should be 0.63N•m.
Solderless
terminal
Nichifu Terminal Industries CO., LTD.
Y type
Japan Solderless Terminal MFG CO., LTD.
Nichifu Terminal Industries CO., LTD.
Round type
Japan Solderless Terminal MFG CO., LTD.
Manufacturer
3.2mm
(Fig. 4-2)
• TC : Thermocouple input terminals
• RTD : RTD input terminals
• DC : DC current, DC voltage input terminals
For DC current input type, connect 50
shunt resistor (sold separately) between
input terminals.
• OUT1 : Control output or Heating output (Heating/
Cooling control option) terminals
• POWER SUPPLY: Power terminals
• EV1/OUT2: Event output 1 or Cooling output
(Heating/Cooling control option) terminals
• EV2 : Event output 2 terminals
• DI : DI (Digital input) terminals
Three DI functions: SV1/SV2 external
selection function, OUT/OFF (RUN/STOP)
external selection and Timer function
• RS-485: Serial communication terminals
Model
TMEV1.25Y-3
VD1.25-B3A
TMEV1.25-3
V1.25-3
3.2mm
7
Tightening
torque
0.63N•m