IH control circuit interface, +5VSW, IH2 on, IH1 on

16.4.3 IH control circuit interface

The IH control circuit uses a photocoupler as an insulation against the secondary circuit. The interface signals are as follows.

CN No.	Name of single	Direction	Definition

CN455-2	+5VSW

CN455-3	H1PWR1	LGC to IH	Switching signal of power setting

CN455-4	H1PWR2

CN455-5	H1PWR3

CN455-6	H2PWR1

CN455-7	H2PWR2

CN455-8	H2PWR3

CN455-1	IH2 ON	LGC to IH	IH coil energization permitting signal

CN456-1	IH1 ON

CN456-4	H1ERR1	IH to LGC	IH status signal (*Note)

CN456-5	H1ERR2

CN456-2	SG

CN456-3	IHDUTY	LGC to IT	Main/sub switching signal

(*Note) IH status signal

•When the temperature (due to insufficient cooling) of the switching element (IGBT) is abnormal:

“12: Coil is abnormal, IH FAN OFF” → After a certain period of time → Error [C480]

•Main/sub coil continuous energization error (15 sec.): “12: Coil is abnormal, IH FAN OFF” → After a certain period of time → Error [C480]

•When the upper limit of the power voltage is abnormal:

“10, 11, 14: Initializing” → After a certain period of time → Error [C470]

“07: Ready” → After a certain period of time → Error [C470]

•When the lower limit of the power voltage is abnormal:

“10, 11, 14: Initializing” → After a certain period of time → Error [C470]

“07: Ready” → After a certain period of time → Error [C470]

•Defective circuits →: “13: Abnormal circuit, IH coil abnormality” → Error [C490]

•Ready state after the initialization: “01: Ready”

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