In brief: Servo electric cylinder electromagnetic interference can disturb feedback or control signals. Verify the evidence before attributing a motion fault to EMI.
servo electric cylinder electromagnetic interference: engineering checklist
Define the application requirement and record the baseline before adjusting hardware or controls. Each actuator configuration has model-specific limits, so confirm claims against the selected datasheet, drive manual and machine drawing.
Recognize the symptom
Intermittent following error, encoder alarms or position jitter near a switching event can suggest electrical noise. Compare the timing with nearby drives, contactors and high-current equipment. A repeatable current peak at one stroke position may instead indicate mechanical binding.
Separate power and feedback wiring
Follow the drive and encoder manufacturers’ specified routing and separation. Avoid long parallel runs of motor and signal cable. Use the approved shielded cable and maintain its integrity through connectors and moving cable carriers.
Grounding and shielding
Check protective earth and shield termination against the system wiring diagram. Randomly adding ground connections can create another problem. Verify cabinet bonding, connector seating and damaged insulation with qualified electrical personnel under the appropriate isolation procedure.
Prove the correction
Capture the same motion trace before and after correcting a wiring fault. Reproduce the original conditions, including nearby equipment operation. If alarms persist, inspect the feedback device, drive configuration and mechanical load before changing unrelated parameters.
Practical verification steps
- Record the actuator model, load, stroke, speed, duty, mounting orientation and relevant alarms.
- Compare measurements with the actual component documentation.
- Inspect the mechanical load path, wiring and safety controls before changing settings.
- Change one condition at a time and retest the production cycle.
Frequently asked question
What should be included in a model review? Send the load case, motion profile, environmental conditions and installation drawing. These details support a model-specific recommendation and make assumptions visible.
Explore the NEFEIT resource center, failure diagnosis guide and product range, or contact NEFEIT engineering. The THK technical resources offer linear-motion background; follow the installed components’ manuals for actual requirements.