Rockwell Automation 8510 AC Spindle Drive System User Manual User Manual

Page 128

Troubleshooting

Chapter 11

11-124

Table 11.E (Continued)
Problems that Occur when Drive Enable applied (or during operation)

Possible Solutions

Probable Cause

Problem

Inv/Mtr Short
displayed - Current
sensed by DC link
current sensor
CT-S was too high.
Usually indicates
problem with
motor or IGBTs in
inverter bridge.

See fault condition 10, Motor Short.

See fault condition 10, Motor
Short.

1. Check seating of Interconnect Boards into board connectors CN7

and CN8 (CN15 and CN16 on A04/A06 drives).

2. Remove Interconnect Board from CN7 and CN8 and inspect

contacts in both connectors to assure that they are making proper
contact with the Interconnect Board. Make certain it is inserted
correctly, so that “blank side,” if any, is towards outside of drive.

Malfunctioning drive
interconnections.

Remove all twelve 0.3A fuses and check with ohmmeter. Replace
any bad fuses.

Important: Be certain to properly reseat all fuses to avoid possible
damage to IGBTs.

Possible malfunctioning IGBT
driver fuse on Main Control Board
(Gate Drive Board on A04/A06
Drive).

Check IGBT modules M1, M2, and M3 (or IGBT1 in A04/A06
drive) according to procedure later in this chapter. Replace Power
Unit if IGBT is malfunctioning.

Malfunctioning IGBT module in
inverter bridge.

If problems were not found with other tests, replace Main Control
Board (Gate Drive Board and possibly CPU Board on A04/A06
drives).

Malfunctioning printed circuit
board.

If problems were not found with other tests, replace the Power Unit.

Malfunctioning Power Unit
current sensor or circuit board.

Need Parameter
displayed - A
required parameter
has not been
programmed into
the EEPROM
before attempting
to enable the drive.

1. Verify that the motor catalog number and drive catalog number

are properly programmed.

2. In orient mode, verify proper feedback definition.

Drive programming not
completed.

Parameter Err
displayed - Two
programmed
parameter values
conflict with one
another.

Re-examine programmable parameters for compatibility; start with
the ones most recently changed. Refer to the 8510 Programming
Manual (publication 8510-5.2) as needed.

Parameters are incorrectly
programmed.

Data Conflict
displayed - Pro-
grammed parame-
ter values conflict
with one another.

Re-examine programmable parameters for compatibility; start with
the ones most recently changed. Refer to the 8510 Programming
Manual (publication 8510-5.2) as needed.

Parameters are incorrectly
programmed.

No.