GTX Series Actuator Installation & Maintenance Instructions |
15
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7.0 TROUBLESHOOTING
GTX Series actuators are engineered for years of trouble-free
operation. If problems are encountered while installing or using
the actuator, the information in Figure 14 may help solve the
problem.
Symptom / Trouble
Possible Cause / Troubleshooting Procedure
No response from actuator.
•
Ensure the amplifier is enabled.
•
Check amplifier for faults that may indicate problem.
• Check for proper wiring.
Actuator seems to be enabled (receiving
current) but is not operating or is operating
erratically.
•
Amplifier may be improperly tuned. Check all gain settings. If a motor file or parameters
specific to your amplifier/actuator combination have been supplied by Exlar, be sure that
they are entered or downloaded properly.
•
Amplifier may be set up improperly for the particular motor being used. Check amplifier
settings for number of poles, voltage, current, resistance, inductance, inertia, etc.
• Feedback wiring may be incorrect.
• Feedback conductors are touching, or feedback cable may be damaged.
• Motor phases are wired incorrectly or in incorrect order (R,S,T).
• Feedback (resolver or encoder) is improperly aligned. Contact Exlar.
Actuator cannot move load.
• Load is too large for the capacity of the actuator or too much friction is present.
• Excessive side load.
• Misalignment of output rod to load.
•
Amplifier has too low of current capacity or is limited to too low of current capacity.
Actuator housing moves or vibrates when shaft
is in motion.
• Check actuator mounting. Ensure that the actuator is securely mounted.
•
Amplifier is improperly tuned (wrong gain settings). Re-tune amplifier.
Output rod rotates during motion and thus does
not provide proper linear motion.
• Install Exlar anti-rotation assembly or incorporate anti-rotation into the application.
Limit switches not functioning.
• Limit switches are wired improperly. Refer to manual.
• The device being driven by the limit switches is not compatible with the electrical output
of the limit switch. Check device requirements.
• Switches have been damaged by improper wiring or improper voltage applied. Replace
switches.
Brake does not hold load in place.
• Load is larger than the capacity of the brake-check load level against actuator rating.
• Brake is not engaged. (Power is not removed, or only partially removed from brake).
• Brake is being used as other than a power-loss holding brake.
Actuator is overheating.
•
Insufficient cooling for application requirements.
• Actuator is being operated outside of continuous ratings.
•
Amplifier is poorly tuned causing excessive unnecessary current to be applied to motor.
Check gain settings.
Figure 14 –
Troubleshooting guidelines
