Tolomatic User Guide:
IMA-S Integrated Motor Rod-Style Actuator - Stainless Steel
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B .1 Troubleshooting Procedure
Appendix
B
SYMPTOM
CAUSE
SOLUTION
No response from
actuator
Controller / Drive not enabled
Enable Controller/Drive
Controller / Drive faulted
Reset the Controller/Drive
Improper / Failed wiring
Check the wiring
Actuator is enabled but
is not operating or is
operating erratically
Feedback cable may be
damaged
Test the feedback cable
Feedback wiring may be
incorrect
Verify feedback wiring
Actuator is operating
but is not up to rated
speeds/force
Motor phases are wired
incorrectly or in incorrect order
Verify correct wiring of motor
armature
Drive may be improperly tuned Check all gain settings
Drive may be set up
improperly for IMA-S actuator
used
Check drive settings for
number of poles, voltage,
current, resistance,
inductance, inertia, etc.
Feedback is improperly aligned Contact Tolomatic
Actuator cannot move
Force is too large for the
capacity of the actuator or too
much friction is present
Verify force requirements
Excessive side load
Verify correct operation
Misalignment of output rod to
application
Verify correct alignment
Drive has too low of current
capacity or is limited to tool
low of current capacity
Verify correct drive and
settings
Actuator has crashed into hard
stop
Disconnect from load and
manually move away from
hard stop. If problem persists,
contact Tolomatic for service.
Actuator housing moves
or vibrates when shaft is
in motion
Loose mounting
Check actuator mounting
Drive is improperly tuned –
wrong gain settings
Tune drive
Actuator is overheating
Duty cycle is higher than
actuator ratings
Verify duty cycle is within
continuous ratings
Drive is poorly tuned, causing
excessive unnecessary current
to be applied to motor
Check gain settings
Actuator low or out of grease
Re-lubricate
