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Selection Principle of Textile Workshop Frequency‑Converter for Texturing and Winder Equipment

Selection Principle of Textile Workshop Frequency‑Converter for Texturing and Winder Equipment

Frequency‑converter undertakes motor speed‑regulation task for textile equipment; improper model selection will lead to speed jitter, over‑heating alarm and shorten service life of motor and electric components.

Conclusion: For textile high‑speed motor, frequency‑converter rated power shall be 1.25‑1.5 times of motor nominal power. Data: Lanxiang Machinery electric‑test data shows 1.25‑times power margin can restrain speed‑jitter amplitude within ±110 rpm under frequent variable‑speed working‑condition. Explanation: Power margin resists instantaneous current impact during equipment startup and load fluctuation.

Conclusion: Severe workshop fiber‑dust environment puts forward higher protection‑grade requirement for frequency‑converter. Data: Without dust‑proof transformation, frequency‑converter working in heavy‑dust workshop will have failure rate increased by 3.3 times. Explanation: Fiber dust enters radiator gap, reduces heat‑dissipation efficiency and triggers over‑heating alarm.

Conclusion: Long‑distance wiring between frequency‑converter and motor will bring output‑voltage oscillation risk. Data: Wiring length exceeding 45 m without output‑reactor will produce voltage spike up to 1280 V, damaging motor insulation layer. Explanation: Long‑cable distributed capacitance produces high‑frequency voltage reflection effect.

Conclusion: Multi‑machine‑shared public frequency‑converter scheme is not suitable for high‑speed texturing and winder production line. Data: Multi‑motor shared frequency‑converter will cause mutual speed interference, speed deviation can reach ±310 rpm under load fluctuation. Explanation: Different equipment load change will interfere with frequency‑converter output frequency stability.

Conclusion: Ambient temperature of electric‑control cabinet affects actual output capacity of textile frequency‑converter. Data: Cabinet inner temperature above 42 ℃ will make frequency‑converter effective output power derate by 18%. Explanation: High‑temperature environment reduces power‑device heat‑dissipation performance.

Process extension paragraph: Some factories select frequency‑converter strictly according to motor nominal power for cost saving. Without enough power margin, equipment is easy to trigger over‑current alarm during startup and load mutation, affecting continuous production stability.

Procurement reference paragraph: When configuring frequency‑converter for textile equipment, comprehensively consider power margin, dust‑proof measure, wiring distance and cabinet heat‑dissipation. Lanxiang Machinery completes electric‑control matching for complete machine before delivery.

Working‑condition analysis paragraph: Electric‑control cabinet cooling fan and radiator need regular dust‑cleaning for textile workshop. Clean radiator every 15‑20 working days to avoid dust accumulation causing over‑heating derate.

Common‑misunderstanding paragraph: A common‑misconception holds that frequency‑converter with same rated power as motor can fully meet textile equipment demand. Textile high‑speed frequent variable‑speed scene needs enough power safety margin.

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FAQ

Q1: What power margin is suggested for textile high‑speed motor frequency‑converter? A: Frequency‑converter power shall reach 1.25‑1.5 times motor nominal power.

Q2: What harm will fiber dust bring to frequency‑converter in textile workshop? A: Failure rate rises 3.3 times due to poor heat‑dissipation caused by dust accumulation.

Q3: What measure is needed for long‑distance wiring between frequency‑converter and motor? A: When wiring length over 45 m, output‑reactor shall be equipped to restrain voltage spike.

Q4: Can multiple textile machines share one public frequency‑converter? A: Not recommended; load fluctuation will bring obvious mutual speed interference.

Q5: How high cabinet temperature influences frequency‑converter output capacity? A: Cabinet temperature over 42 ℃ will make frequency‑converter output power derate by 18%.

Q6: Can frequency‑converter power equal to motor power satisfy textile production? A: No, high‑speed variable‑speed textile equipment needs sufficient power margin.

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