Yaskawa VCD 723 User Manual
Page 68

4
Troubleshooting/Maintenance
62
Troubleshooting Flowcharts
9/15/93
Chart 3. Motor Does Not Rotate At Set Speed
CORRECT MOTOR FOR
USE WITH DRIVE?
YES
CONSULT MAGNETEK
ABOUT MOTOR
SELECTION.
NO
PROPER CONNECTIONS
FROM VCD 723 TO
MOTOR AND PG?
NO
CHECK CONNECTIONS
FOR PROBLEM AND
REPAIR.
YES
PROPER SPEED
REFERENCE INPUT?
PER PAC DIAGRAM.
NO
CHECK EXTERNAL
CIRCUITS FOR
PROBLEM AND
REPAIR.
YES
CHECK PARAMETER
SETTINGS PROPER
FOR APPLICATION?
NO
NO
CHECK SETTINGS;
REPROGRAM
AS REQUIRED.
YES
IS PG
OUTPUT SIGNAL
NORMAL?
IS PG
POWER SUPPLY
NORMAL?
YES
YES
NO
EXCESSIVE
MECHANICAL SYSTEM
CHATTER?
YES
CHECK FOR
PROBLEM IN MOTOR,
MECHANICAL SYSTEM
OR BRAKE.
CONSULT
MAGNETEK.
NO
CONSULT
MAGNETEK.
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