Hitachi SJ700-2 Series service manual Trip conditions monitoring

2.3 Trip conditions monitoring

1) Trip factor

These digits indicate a trip factor. This digit indicates the inverter status at tripping.

See Section 5.1.1.		Explanation of display
2) Output frequency (Hz) at tripping		: Resetting
		: Initialization at power-on or with the reset terminal turned on
		: Stopping the motor
3) Output current (A) at tripping		: Decelerating or operating the motor at constant speed
		: Accelerating the motor
		: Status after receiving a zero-frequency operation command
		: Starting the motor
4) DC voltage (V) across P and N terminals at tripping		: Applying DC braking to the motor
		: Overload-restricted operation
		: Forcible or servo-on operation
	Note: The above descriptions indicate the inverter status at the
5) Accumulated time (h) for which the inverter has	occurrence of tripping, which may not correspond to the apparent
	operation of the motor.
been running before tripping
	(Example)
	When the PID control is used or the frequency command is input as an
	analog signal (a voltage or current signal), the inverter may repeat
	acceleration and deceleration alternately at short intervals to make up
6) Accumulated time for which the inverter power	for the fluctuations of the analog signal, even if the motor is apparently
has been on before tripping	running at constant speed.
	In such cases, the inverter status at tripping may not correspond to the
	apparent operation of the motor.

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