Toshiba VF-S9 manual 6.15.10 4-20mA dc calibration, Undervoltage trip selection, Meter bias

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6.15.9 Undervoltage trip

: Undervoltage trip selection

• Function

This parameter is used for selecting the control mode when an undervoltage is detected. Trip infor-

mation is displayed as “ “.

(Disabled).......The inverter is stopped. However, it is not tripped (FL relay deactivated).

The inverter is stopped when the voltage does not exceed 70% or less of its rating.

(Enabled) .......The inverter is stopped. It is also tripped (FL relay activated), only after detec-

tion of a voltage not exceeding 70% or less of its rating. (Disabled).......Control is continued even at 60% of the rated voltage.

The inverter stop (FL relay deactivated), only after detection of a voltage not ex- ceeding 45% of its rating.

An input AC reactor must be used. See 10.4.

Title	Function	Adjustment range	Default setting
		0: Disabled
	Undervoltage trip selection	1: Enabled (Trip at 70% or less)	0
		2: Disabled (Stop(not trip) at 45% or less,
		optional)

6

6.15.10 4-20mA dc calibration

: Meter bias

• Function

Output signals from FM terminals are analog voltage signals. Their standard setting range is from 0 to 1mAdc or from 0 to 7.5Vdc.

These standard setting ranges can be switched to 0-20mAdc by changing the position of the required jumper pin (JP302) in the inverter main unit. Calibration for 4-20mA dc output is possible by setting this parameter.

Title	Function	Adjustment range	Default setting
	Meter bias	0 ∼ 50 (%)	0

Note: Use the jumper pin (JP302) to select FMC (0-20mA dc (4-20mA dc)) output.

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