Toshiba VF-AS1 instruction manual Ground fault detection selection, +Su

E6581301

6.33.24 Protection against a failure of the control power backup device (optional CPS002Z)!

￿￿￿￿

: Control power supply backup option failure monitoring

!• Function

If the control power backup device (optional CPS002Z) fails to supply power for some reason or other for fifteen

minutes and over, the inverter will put out an alarm signal or a trip signal depending on the setting.

Leaving this parameter disabled may cause the main power supply to be turned on and off endlessly if something unusual occurs, depending on your sequence etc., so you should set this parameter ￿￿￿￿ properly when using the optional power backup device.!

Title	Function	Adjustment range	Default setting
		￿: Control power supply not backed up
	Control power supply backup	￿: Control power supply backed up
￿￿￿￿￿		(alarm in the event of a failure)	￿￿
	option failure monitoring
		￿: Control power supply backed up
		(tripping in the event of a failure)

■￿￿￿￿=￿: If control power is not backed up with an external backup device:

Select this setting if an external backup device is not connected to the inverter’s control terminals +SU and CC.

Note: Even if ￿￿￿￿ is set to ￿ while control power is backed up, the inverter will cut off the power supply and issue ￿￿￿￿ alarm in the event the backup device fails during operation.

If the backup device is already faulty when it is turned on, it will not be recognized to be faulty even if this setting is selected.

■￿￿￿￿=￿: If control power is backed up with an external backup device (alarm signal output):

If ￿￿￿￿ is set to ￿, however, the inverter will cut off the power supply, let the motor coast, and raise a ￿￿￿￿

alarm in the event something unusual (voltage drop) occurs with the power supplied through the +SU and CC terminals.

Once the ￿￿￿￿ alarm has been raised, the inverter is not reset even if the control voltage returns to its normal level. To reset the inverter, turn off the main circuit power supply.

￿

■￿￿￿￿=￿: If control power is backed up with an external backup device (trip signal output):

This setting trips the inverter in the event something unusual (voltage drop) occurs with the external control power

backup device. Trip code ￿￿￿￿ is displayed.

6 In the event of this trip, unlike ordinary trips, the inverter is held tripped regardless of the setting of ￿￿￿￿

(inverter trip retention selection).

This setting is effective only when the inverter is used in a standard connection shown in Chapter 2. If reset the trip, operate with ￿￿￿￿=￿ or￿ setting.

Note: Be sure to set the parameter ￿￿￿￿ to 1 if the main power supply is turned on and off endlessly for reasons of sequence, as shown below, in the event the control power backup device fails.

￿For details, refer to section 6.33.2.

In case of

3 φ - 200~240V -50/60Hz !

Control power supply backup option (CPS002Z)

MC

R/L1

S/L2

T/L3

+SU

CC

FLA

RUN

MC

FLB

FLC

RUN

6.33.25 Ground fault detection selection

￿￿￿￿

: Ground fault detection selection

!

• Function

If the trip EF2 occurred because the DC input terminals (PA, PC) of inverter is connected to a power source, Set ￿￿￿￿=1.

Title	Function	Adjustment range	Default setting
￿￿￿￿	Ground fault detection selection	￿: Detection (except in stop)	￿￿
		￿: No detection

Note) This function is only effective for 200V-15kW or less and 400V-18.5kW and 600V-7.5kW or less.

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