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Heating-cooling control
*2
*2
*2
*2
Heating
Cooling
*1
Controlled
object
*1
*1 Use the shielded compensation lead wire.
*2 Use the shielded cable.
Use the compensation lead wire for the cable of a thermocouple. The shielded cable cannot be used. If the
compensation lead wire is not used, and when the cold junction temperature compensation resistor (1) is
away from the end tip (2) of a thermocouple, the (ambient) temperature (3) difference may lead to a faulty
temperature process value (PV).
(2)
R60TCTRT2TT2
L1H
L1C
L2H
L2C
COM-
24VDC
Filter
CH1+
CH1-
Filter
CH2+
CH2-
R60TCTRT2TT2(BW)
(1)
(3)
Internal
circuit
Internal
circuit
Internal
circuit
Internal
circuit
Internal
circuit
6 INSTALLATION AND WIRING
39
6.3 External Wiring
6
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