6 INSTALLATION AND WIRING
6.3 External Wiring
41
6
R60TCTRT2TT2BW
Standard control
*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).
·
·
·
L1
L2
L4
COM-
CH1+
CH1-
CH2+
CH2-
CH4+
CH4-
CT1
CT1
CT2
CT2
*2
*1
*1
*2
*2
CT8
CT8
R60TCTRT2TT2BW
(CT)
24VDC
Current sensor
CT input circuit
Controlled
object
Internal
circuit
Internal
circuit
Internal
circuit
Filter
Filter
Filter
Connector
Connector
R60TCTRT2TT2(BW)
(1)
(3)
(2)
Содержание MELSEC iQ-R series
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