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9 fault relay information, 9 fault relay information -19, Toshiba – Toshiba VF-SX User Manual

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TOSHIBA

8-19

Be sure to reset the frequency to a lower value before actually starting the

motor.

Other possible warning displays are:

[ C ] :

A current more than the overcurrent stall level has been detected.

A voltage more than the overvoltage stall level has been detected.

[P]

[<-]

This LED character Is displayed when the overload [

t H f ~ ]

trip

value has reached more than approximately 75% of the trip value.

8.9 Fault Relay Information

The VF-SX drive has an Internal fault relay (FL), which Indicates that the drive
has tripped. The possible causes of trips are shown in Table 8-1 of this
chapter. Possible solutions to trips are shown in Chapter 16. Part 7 of this
chapter details the procedure to reset the drive In the event of a trip.

When the protective function operates and the inverter trips the trip cause will

be shown on the LED monitor display. This is a visual confirmation of a trip.
The fault relay provides electrical confirmation and indication of a tripped

condition. The fault detection signal Is output at the (FL) relay contact

points. See Figure 8.2 below.

0

©

©

©

FLA

FLB

FLC

Figure 8.2 Terminals for the Fault

Detection Signal