Rockwell Automation Publication 2094-UM001D-EN-P - May 2010 167
Troubleshooting the Kinetix 6000 Drive System Chapter 7
General System Anomalies
These anomalies do not always result in a fault code, but may require
troubleshooting to improve performance.
Table 93 - General System Anomalies
Condition Potential Cause Possible Resolution
Axis or system is unstable.
The position feedback device is incorrect or open. Check wiring.
Unintentionally in Torque mode.
Check to see what primary operation mode was
programmed.
Motor tuning limits are set too high. Run Tune in RSLogix 5000 software.
Position loop gain or position controller accel/decel rate is
improperly set.
Run Tune in RSLogix 5000 software.
Improper grounding or shielding techniques are causing noise to be
transmitted into the position feedback or velocity command lines,
causing erratic axis movement.
Check wiring and ground.
Motor Select limit is incorrectly set (servo motor is not matched to
axis module).
• Check setups.
• Run Tune in RSLogix 5000 software.
Mechanical resonance.
Notch filter or output filter may be required
(refer to Axis Properties dialog box, Output tab
in RSLogix 5000 software).
You cannot obtain the motor
acceleration/deceleration that
you want.
Torque Limit limits are set too low. Verify that current limits are set properly.
Incorrect motor selected in configuration.
Select the correct motor and run Tune in
RSLogix 5000 software again.
The system inertia is excessive.
• Check motor size versus application need.
• Review servo system sizing.
The system friction torque is excessive. Check motor size versus application need.
Available current is insufficient to supply the correct accel/decel
rate.
• Check motor size versus application need.
• Review servo system sizing.
Acceleration limit is incorrect.
Verify limit settings and correct them, as
necessary.
Velocity Limit limits are incorrect.
Verify limit settings and correct them, as
necessary.
Motor does not respond to a
velocity command.
The axis cannot be enabled for 1.5 seconds after disabling.
Disable the axis, wait for 1.5 seconds, and
enable the axis.
Enable signal has not been applied or the enable wiring is incorrect.
• Check the controller.
• Check the wiring.
The motor wiring is open. Check the wiring.
The motor thermal switch has tripped.
• Check for a fault.
• Check the wiring.
The motor has malfunctioned. Repair or replace the motor.
The coupling between motor and machine has broken (for example,
the motor moves, but the load/machine does not).
Check and correct the mechanics.
Primary operation mode is set incorrectly. Check and properly set the limit.
Velocity or current limits are set incorrectly. Check and properly set the limits.
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