Emerson FM-3 Instrukcja Naprawy Strona 18

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14
“Z” Power Stage Fault
This fault is indicated by the display showing a “Z”. This indicates a fault in the Power
Stage logic power supply or the Power stages of the drive.
Potential causes for the “Z” Power Stage fault
Power Stage over-temperature or over-current
Power Stage switching transistor failure
Loss of Power Stage logic power supply
Use of improper serial or sync cables
Motor shorted to ground
Motor Phases shorted
Notes
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