Справочник Пользователя для Toshiba VF010H05

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Note:  Proper phase sequence must be observed when 

connecting the input power. For example, phase A 

must lead phase B, which in turn must lead phase 

C by 120° respectively. If the phase rotation is 

not correct, a fault light and the LCD display will 

indicate the problem.

SP3.1 Imbalance Alarm Level: This is an advance warning 

of a phase imbalance problem. The problem may 

not be a fault in the motor, but merely caused by 

imbalanced voltages.

•  Imbalance Alarm Delay: The amount of time the 

imbalance condition must exist before an alarm 

occurs.

SP3.2 Imbalance Trip Level: This will trip the motor on 

excessive phase imbalance. The trip level should 

be programmed to a higher value than the alarm 

level.

•  Imbalance Trip Delay: The amount of time the 

imbalance condition must exist before a trip will 

occur.

SP3.3 Undercurrent Alarm Level: Typically used to warn 

of possible load loss, a coupling breaking or other 

mechanical problems.

•  Undercurrent Alarm Delay: The amount of time 

the undercurrent condition must exist before an 

alarm will occur.

SP3.4 Overcurrent Alarm Level: Typically used to indicate 

when the motor is overloaded. This feature can be 

used to either stop the feed to the equipment or 

warn operators of an overload condition.

•  Overcurrent Alarm Delay: The amount of time the 

overcurrent condition must exist before an alarm 

will occur.