Heater Disconnection Detection Wiring And Setting Example For Three-Phase Heater - Mitsubishi MELSEC iQ-R series User Manual

6.4
Heater Disconnection Detection Wiring and
Setting Example for Three-phase Heater
The following shows the wiring and setting examples to detect a disconnection of a three-phase heater with the heater
disconnection detection function.
The disconnection of the three-phase heater is detected by measuring the currents of two of the three cables.
In the above wiring example, set "CT input channel assignment setting" of "CT setting" as indicated below.
Item
CT1
CT2
CT3
CT4
CT5
CT6
CT7
CT8
6 INSTALLATION AND WIRING
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6.4 Heater Disconnection Detection Wiring and Setting Example for Three-phase Heater

Controlled
object
(1)
(2)
(3)
(4)
R60TCTRT2TT2BW
R60TCRT4BW
L1
L2
L3
L4
COM-
CH1
CH2
CH3
CH4
CT1
CT1
CT2
CT2
CT3
CT3
CT4
CT4
CT5
CT5
CT6
CT6
CT7
CT7
CT8
CT8
Setting value
CH1 (1)
CH1 (1)
CH2 (2)
CH2 (2)
CH3(3)
CH4(4)
Unused (0)
Unused (0)