Emerson FM-3 Guide de dépannage télécharger pdf (Page 21)

17

“u” “Low DC Bus Fault”

Reset with

Reset P/B

Operation

Returns To

Normal

Measure

AC Input

On Power Connector

Epsilon

"u" Fault

when using

Aux Power

Supply (+24VDC)

Use

PowerTools

to Disable

Monitoring

Open PowerTools

On Menu Bar

Click on

Options >

Preferences>General

Check Box

Select Advanced Tab

Go On Line

with the Drive,

In Detailed Mode

Select Advanced Tab

Uncheck Box by

Low DC Bus Enable

Reset with

Reset P/B

Operation

Returns To

Normal

"u" Fault

Low DC Bus

Yes

Segment 1

RSR-2 Malfunction

or

Improper Installation

Refer to RSR-2

Troubleshooting

Flowchart

Reapply Power

Rapid

Cycling of Power

Operation

Returns To

Normal

No

Yes

Yes

Segment 2

End

End

End

Segment 3

Remove Power

for 10 seconds

No

When Input AC returns

to 96 to 264 VAC

Reapply Power

Low Input AC

< 120 VAC &

Rapid DT with

Large Load

u Fault

Increase Input AC

> 120 VAC or

Increase AT

(

E-Series

)

24 VDC

APS

Disabled,

Low Bus

(

Epsilon

)

Segment 4

Operation

Returns To

Normal

End

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