Lenze S94P01B2 - Manual (Page 70)

S94P01B2
68
Diagnostics
8.3.2 Fault Event
When drive encounters any fault, the following events occur:
• Drive is disabled
• Internal status is set to “Fault”
• Fault number is logged in the drive’s internal memory for later interrogation
• Digital output(s), if configured for “Run Time Fault”, are asserted
• Digital output(s), if configured for READY, are de asserted
• If the display is in the default status mode, the LEDs display F_XX where XX is
current fault code.
• “Enable” LED turns OFF
8.3.3 Fault Reset
Fault reset is accomplished by disabling or re-enabling the drive depending on the
setting of the “Reset option” parameter (section 5.3.10).
8.4 Troubleshooting
DANGER!
Hazard of electrical shock! Circuit potentials are up to 480 VAC above
earth ground. Avoid direct contact with the printed circuit board or with
circuit elements to prevent the risk of serious injury or fatality. Disconnect
incoming power and wait at least 60 seconds before servicing drive.
Capacitors retain charge after power is removed.
Before troubleshooting
Perform the following steps before starting any procedure in this section:
• Disconnect AC or DC voltage input from the PositionServo. Wait at least 60
seconds for the power to discharge.
• Check the PositionServo closely for damaged components.
• Check that no foreign material has become lodged on, or fallen into, the PositionServo.
• Verify that every connection is correct and in good condition.
• Verify that there are no short circuits or grounded connections.
• Check that the drive’s rated phase current and RMS voltage are consistent with
the motor ratings.
For additional assistance, contact your local PositionServo® authorized distributor.
Problem External line fuse blows
Possible Cause Line fuses are the wrong size
Motor leads or incoming power leads are shorted to ground.
Nuisance tripping caused by EMI noise spikes caused by poor grounding
and/or shielding.
Suggested Solution • Check that line fuses are properly sized for the motor being used.
• Check motor cable and incoming power for shorts.
• Check that you follow recommendation for shielding and grounding listed in
section 3.2 in this manual.