Toshiba VF-nC1 instruction manual Function

E6581090

6.14.6 Input phase failure detection

H

: Input phase failure detection mode selection

• Function

This parameter allows you to select a mode of detecting an input open-phase failure. If the ripple voltage in the main circuit capacitor remains very high for a certain period of time, the inverter will trip and the FL relay will be activated. At the same time, the error message GRJK will be displayed. If the power capacity is far larger than the inverter capacity (by more than 200kVA and more than 10 times), a detection error may occur. If this occurs, install an AC or DC reactor. If the motor capacity is very small as compared with the inverter capacity, no open-phase failures may be detected.

H＝ (Disabled)･･･ No tripping (FL relay not activated)

H＝ (Enabled) ･･･ An open-phase check is performed during operation. The inverter trips

6if the ripple voltage in the main circuit capacitor remains unusually high for a certain period of time. (FL relay activated)

Title	Function	Adjustment range	Default setting
H	Input phase failure	0: Disabled, 1: Enabled	1
	detection mode selection

6.14.7Over-torque alarm

H

H

H

:Over-torque alarm level

:Over-torque detection time

:Output terminal selection 1 (OUT/FM) (H: Output terminal selection 3 (FL))

• Function

An over-torque alarm signal is put out if a torque current exceeding the level set with H (over-torque alarm level) flows for a period of time longer than that set with H (over- torque detection time). To put out the signal via the FM/OUT or FL terminal, this function needs to be assigned to it in advance, using the output terminal function selection parameter.

Title	Function	Adjustment range	Default setting
H	Over-torque alarm level	0～200(%)	150
H	Over-torque detection time	0.00～10.0(sec)	0.5
H	Output terminal selection 1 (OUT/FM)	0～13	4
H	Output terminal selection 3 (FL)	0～13	10

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