Hitachi L300P Series service manual Control power supply, Control signal

4. The check of control power supply voltage and a control signal

4.1 Control power supply

	Item	Tolerance level		Measurement place
				+	-
PV5	+5V power supply	4.5V - 5.5V		J1 connector 25,16pin	Control terminal	L
PV12 +12V power supply		10.8V	- 13.2V	J1 connector 7pin	Control terminal	L
NV12 -12V power supply		-13.2V	- -10.8V	J1 connector 5pin	Control terminal	L
PV24	24V power supply	21.6V	- 26.4V	J1 connector 3,4pin,	Control terminal CM1
				Control terminal P24

4.2 Control signal
Signal	Measurement place	The contents of operation				Observation waveform
		A main circuit direct-current voltage
VDC	J1 connector 12pin-L	detected signal				Direct-current voltage
		VDC=6.396V/400V*VPN(200Vclass)
		VDC=6.396V/800V*VPN(400Vclass)
		A motor current detected signal						3.3V
IUF	J1 connector 9pin-L
		At the time of inverter rated load: About
IWF	J1 connector 8pin-L							0V
		3.3 V peak
								-3.3V
		The signal at the time of carrying out a
		trip by the trip factor which a gate array
TRIP	J1 connector 21pin-L	judges (P3-1 reference)				Direct-current voltage
		Normal : 5V(H)
		Inside of a trip : about 0.3V(L)
		Phase	failure	protection	detected
PHF	J1 connector 22pin-L	signal				Direct-current voltage
		Normal :5V(H)
		Phase failure detection :about0.5V(L)
		The instantaneous power failure signal
IPL	J1 connector 11pin-L	of R0-T0 part				Direct-current voltage
		Power On : about0.5V(L)
		Power Off : 5V(H)
		Power-module protection
GS	J1 connector 20pin-L	Under operation : about 5V(H)				Direct-current voltage
		Under a stop		: about 0.5V(L)
US	J1 connector 17pin-L	PWM signal				5V
VS	J1 connector 18pin-L	Upper arm ON		: about 3.5V(L)		3.5V
WS	J1 connector 19pin-L	lower arm ON		: about 5V(H)		0V	Upper arm ON Lower arm ON
		The trip distinguished by GA is canceled.				5V
						0.5V
GS	J1 connector 30pin-L	Normal	: about 5V(H)
						0V	Reset	Reset
		Under reset : about 0.5V(L)

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