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Heating-cooling control
Current
sensor
(CT)
Cooling
Controlled
object
Heating
*2
*1 Use the shielded compensation lead wire.
*2 Use the shielded cable.
• To use the heater disconnection detection function, the CT input channel assignment must be set. Since the
CT1 is used in the loop of CH1 in the above wiring example, set "CH1" for "CT input channel assignment
setting" in the "CT setting" of CT1.
• 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).
6 INSTALLATION AND WIRING
42
6.3 External Wiring
R60TCTRT2TT2BW
*2
L1H
*2
L1C
*2
L2H
*2
L2C
COM-
24VDC
*1
Filter
CH1+
CH1-
*1
Filter
CH2+
CH2-
CT1
CT1
CT2
CT2
CT8
CT8
(2)
(1)
(3)
Internal
circuit
Internal
circuit
Internal
circuit
Internal
circuit
Internal
circuit
Connector
Connector
CT input circuit
R60TCTRT2TT2(BW)
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