Convertitore di frequenza trifase Siemens 6SE6440-2AD25-5CA1

Order Code Breakdown

6SE6440 2 A D 25 5 C A1

1. 6SE6440: MICROMASTER 440 (MM440) general-purpose vector inverter serie
2. 2: Protezione IP20, integrated braking chopper
3. UN: Built-in Class A EMC input filter
4. D: 3-phase input 3AC 380~480V (-10%/+10%, 47~63Hz)
5. 25: Power code → 5.5kW constant torque
6. 5: Current rating code
7. C: Frame size C
8. A1: Standard version without BOP/AOP operator panel
9. Key Electrical Specifications

3. Dimensioni meccaniche & Peso

Frame specification: Frame C

Dimensioni complessive (A × L × P): 245 mm× 185 mm× 195 mm

Total weight: 5.7 kg

Mounting requirements: Minimum 350mm upper and lower clearance for cooling air duct; fixed by M8 bolts with tightening torque of 3Nm

4. Condizioni ambientali

Temperatura operativa: -10℃ ~ +50 ℃ (no derating); derating required at 50~60℃

Magazzinaggio & transportation temperature: -40℃ ~ +70 ℃

Applicable altitude: No derating ≤1000m; 1% power derating per additional 100m from 1000m to 4000m

5. Comparative Models of Same Power (Selection Differentiation)

6. Ciclo di vita del prodotto & Soluzioni sostitutive
7. Stato del prodotto: The entire MM440 series has been discontinued (Phase-out PM410); only stock and second-hand spare parts available
8. Direct Upgrade Replacement: Siemens G120 series

Matching model: 6SL3224-0BE25-5UA0 (5.5kW, 380V, without operator panel)

With integrated EMC filter: 6SL3224-0BE25-5AA0

3. Note di sostituzione: I/O logic and communication protocols are compatible; installation dimensions differ, cabinet layout redesign is necessary
4. Scenari applicativi tipici

Constant torque loads: Trasportatori, miscelatori, macchine tessili, small lifting mechanisms

Variable torque loads: Pompe dell'acqua, tifosi, central air circulation systems

Vantaggi: Built-in filter ideal for precision production lines and laboratory equipment with strict electromagnetic interference requirements

8. Common Matching Accessories
9. Operator Panels: 6SE6400-0BP00-0AA0 (Basic Operator Panel BOP), 6SE6400-0AP00-0AA1 (Advanced Operator Panel AOP)
10. Resistenza di frenatura: 6SE6400-4BD21-2DA0 for 5.5kW units
11. Communication Card: 6SE6400-1PB00-0AA0 (PROFIBUS-DP module)
12. Input/Output Reactors: Suppress interference from long motor cables and grid harmonics
13. Critical Precautions
14. This unit comes with a built-in Class A filter; no additional input EMC filter is required.
15. When using a braking resistor, the duty cycle must not exceed 5%, otherwise the resistor will overheat and burn out.
16. The MM440 has no integrated encoder interface; replace with G120 encoder versions for high-precision closed-loop speed regulation.
17. Spare parts for discontinued models are scarce; select G120/G120X directly for new projects.

Application Fields of Siemens 6SE6440-2AD25-5CA1 (MM440 5.5kW 380V Inverter with Built-in Class A EMC Filter)

Equipped with integrated Class A EMC filter and braking chopper, supporting sensorless vector control for both constant-torque and fan/pump variable-torque loads, this unit drives medium-small equipment in interference-sensitive workshops. Classified application sectors are listed below:

1. General Machining Industry
2. Attrezzature di trasporto

Trasportatori a nastro, roller transport lines, small inclined elevators, packaging line conveying sections. The 5.5kW rating fits medium-small material transportation with smooth start-stop performance; the integrated braking chopper enables rapid stopping to prevent material sliding.

2. Woodworking Machinery

Wood cutters, sanders, small planers, multi-axis wood milling machines. Low electromagnetic interference avoids disruption to laser positioning and photoelectric counting sensors.

3. Plastica & Rubber Equipment

Auxiliary extruders, haul-off machines, pelletizers, plastic mixers. Stable vector torque maintains full low-speed torque to support continuous production.

4. Stampa & Macchine per l'imballaggio

Laminators, slitting machines, small bag-making machines, carton forming machines. Class A filter eliminates interference with printing machine encoders and photoelectric detectors, delivering precise speed control for film winding and unwinding.

2. HVAC & Trattamento delle acque (Primary Variable-Torque Applications)
3. Ventilazione & Air Handling

Central air circulation fans, workshop dust extraction fans, cabinet fresh air fans, ventilatori a tiraggio indotto dalla caldaia. Up to 30%~60% energy saving for fan variable-torque operation.

2. Fornitura d'acqua & Drainage Pumps

Building secondary water supply pumps, small wastewater circulation pumps, pompe dell'acqua di raffreddamento, landscape water pumps. Built-in PID enables direct constant-pressure water supply without external controllers.

3. Cold Storage Supporting Equipment

Cooling fans, cooling water circulation pumps. Low-harmonic filtering protects cold storage temperature sensors from signal distortion.

3. Cibo & Beverage Light Industry
4. Attrezzatura per la miscelazione: Sauce mixers, dough kneaders, small fermentation mixing tanks. High low-speed torque ensures homogeneous material blending.
5. Filling Lines: Bottle/can conveyors, small filling pumps, washer drives. Low EMI safeguards liquid level and photoelectric measuring instruments.
6. Small slaughterhouse & aquatic sorting conveying lines.
7. Textile Printing & Industria della tintura

Small warp knitting machines, winders, printing and dyeing fabric guide rollers, drying fans. Smooth speed regulation prevents fabric stretching and breakage; Class A filter protects yarn break detection sensors.

5. Materiali da costruzione & Small Chemical Equipment
6. Materiali da costruzione: Small cement mixing conveyors, tile polishing roller tables, stone cutting machine feed drives.
7. Industria chimica: Small chemical liquid circulation pumps, anti-corrosion agitators, waste gas induced draft fans. Suitable for ordinary chemical workshops outside explosion-proof zones; low interference safeguards online pH and liquid level transmitters.
8. Logistica & Warehousing Equipment

Small freight elevators, roller sorting lines, auxiliary stereoscopic warehouse conveyors. Integrated braking unit delivers emergency rapid braking to guarantee cargo safety.

7. Small Lifting & Material Hoisting (Light-Duty Lifting)

Light winches, small vertical elevators. Sensorless vector control provides sufficient low-speed torque to prevent load slipping; limited to light lifting applications under 5.5kW.

8. Laboratory & Precision Equipment Supporting (Core Advantage of Class A Filter)

Laboratory circulation water pumps, precision equipment cooling fans, inspection platform conveyors.

Compared with non-filter models, the built-in Class A EMC filter drastically reduces conducted and radiated interference, preventing signal distortion in precision detectors, oscilloscopes, sensors and PLC analog inputs, making it the preferred MM440 model for precision workshops.

Unsuitable Application Scenarios

1. High-power heavy-duty lifting, mine explosion-proof equipment (no explosion-proof certification).
2. Long motor cables (output reactor mandatory if motor wiring exceeds 50m to mitigate interference and static electricity on films).
3. High-precision closed-loop servo color registration printing (MM440 lacks encoder closed-loop interface).
4. Outdoor exposed installation (IP20 cabinet mounting only).

Practical Application Cases of Siemens 6SE6440-2AD25-5CA1 (MM440 5.5kW Inverter with Built-in Class A EMC Filter) in Printing & Packaging Industry

Core strengths of this unit: Filtro EMC di Classe A integrato + integrated braking chopper + high low-speed torque via open-loop vector control. It thoroughly resolves industry pain points including sensor interference, violent start-stop impact, film stretching and wrinkling in packaging & attrezzature per la stampa. The 5.5kW power rating matches main traction drives for medium-small standalone packaging machines.

Caso 1: Fully Automatic High-Speed Plastic Bag Making Machine (Food/Clothing Bags)

1. Equipment Configuration

Main traction motor: 5.5kW 3-phase asynchronous motor driving integrated rollers for film feeding, longitudinal sealing, transverse sealing and winding

Invertitore: 6SE6440-2AD25-5CA1 without BOP panel; speed regulated via PLC 0–10V analog signal

Matching components: Integrated braking chopper + compatible braking resistor 6SE6400-4BD21-2DA0; S7-200CN PLC for overall machine logic control

2. Original On-Site Pain Points (Before Model Replacement)
3. Old non-filter inverters caused frequent false triggering of color mark photoelectric sensors, resulting in ±3mm bag length deviation and high reject rates.
4. DC bus overvoltage alarms occurred during high-speed emergency stops and speed reduction for roll change; poor stop buffering led to elongated films and misaligned seals.
5. Insufficient starting torque at low speeds caused slipping of thin PE films and material stacking at machine startup.
6. Retrofit Solutions with 6SE6440-2AD25-5CA1
7. Class A EMC Filter Eliminates Interference: Built-in filter suppresses IGBT high-frequency harmonics, eliminating noise in color mark and edge correction analog signals; bag length error stabilized within ±0.5mm.
8. Integrated Braking Chopper Enables Smooth Deceleration: Rapid dissipation of regenerative energy prevents film stretching during 120m/min emergency stops with precise longitudinal and transverse seal alignment.
9. Controllo vettoriale senza sensori: Full torque output at 0Hz eliminates thin film slipping during low-speed feeding; supports stepless speed regulation from 10–120m/min.
10. Pre-set multi-speed parameters: One-key switching among standby low speed, production high speed and cleaning low speed.
11. On-Site Operation Results

Single-shift reject rate reduced by 75%; no sensor false alarms during continuous operation. No extra input filter required, simplified cabinet wiring and 20% lower overall retrofit cost.

Caso 2: Modello 1000 Paper/Film Slitter (Adhesive Labels, Kraft Paper, PET Film)

1. Drive Station Matching

5.5kW motor drives main traction roller paired with 6SE6440-2AD25-5CA1; magnetic powder brake provides passive unwinding tension, while independent low-power MM440 units control rewinders.

2. Core Process Requirements

Slitting demands constant linear speed and stable tension during acceleration/deceleration to avoid film/paper shifting, wrinkling and breakage. The machine is fitted with edge correction photoelectric sensors and tension analog acquisition modules highly sensitive to electromagnetic noise.

3. Model Matching Advantages
4. Class A filter isolates inverter noise to prevent drift of edge correction analog signals and web wandering during wide-width slitting.
5. Fast dynamic response under vector mode delivers automatic torque compensation during acceleration/deceleration for constant-tension material transport.
6. Built-in braking unit supports frequent start-stop roll changes, eliminating A0911 DC overvoltage faults; replaces external braking units to save cabinet space.
7. Customer Operating Conditions

Medium-small adhesive label printing plant with daily slitting capacity of 80,000 meters film, 24-hour continuous production. The inverter ran stably for 3 years without interference-related faults.

Caso 3: Fully Automatic Gift Box Covering & Rigid Box Forming Machine (Mooncake Boxes, Wine Boxes, Gift Cartons)

1. Drive Points

5.5kW main drive motor for machine conveying rollers synchronizes paper feeding, grey board feeding and laminating conveying.

2. Industry Pain Points

The machine integrates laser positioning probes and in-place photoelectric sensors. Conventional non-filter inverters interfere with laser positioning, causing box lamination offset and mass defective products. Frequent start-stop cycles generate heavy impact on gears and glue rollers, accelerating mechanical wear.

3. Application Advantages
4. Built-in Class A EMC filter protects laser positioning and photoelectric switches, controlling box lamination accuracy within ±0.3mm.
5. Soft start + vector torque control enables gradual speed ramp-up/down to reduce impact on glue rollers and gears, extending equipment maintenance cycles.
6. Built-in PID synchronizes conveying speed with gluing machines for uniform adhesive coating.

Caso 4: Auxiliary Traction for Water-Based Printing Slotting Machines (Small Carton Plant Link Lines)

1. Scenario applicativo

Front-edge paper feeding traction section of carton printing link line. The 5.5kW unit drives board transport rollers to match synchronized speeds of printing, slotting and die-cutting processes.

2. Logica di selezione

Workshops deploy multiple photoelectric counting and color registration detection sensors with severe grid noise. The integrated filter of 6SE6440-2AD25-5CA1 removes the need for extra filter accessories and fits densely arranged multi-device cabinets. Switchable wide-range V/F and vector modes automatically adjust torque output for heavy thick cardboard and light thin cardboard loads.

Caso 5: Laminating Machine (Cold/Hot Film Lamination Equipment)

Process Characteristics

Film-paper lamination requires precise speed synchronization and steady tension. Thermocouple temperature sensors for hot lamination output analog signals prone to interference-induced temperature jumps, causing film wrinkling and air bubbles.

Inverter Value

1. Class A EMC filter suppresses conducted interference for stable thermocouple signals and constant heating roller temperature.
2. Braking chopper delivers smooth stopping to avoid composite film stretching due to inertia.
3. Wide 0–550Hz output range covers two operating modes: low-speed precision lamination for ultra-thin films and high-volume high-speed production for thick paper.

Core Differentiating Value of 6SE6440-2AD25-5CA1 vs Same-Power Non-Filter Model (6SE6440-2UD25-5CA1) in Printing & Packaging Industry

Model Selection Pitfall Avoidance Guide for Printing & Packaging Industry

1. Applicable Operating Conditions: Main traction, transport roller and film feeding drives for standalone machines with 4–5.5kW motors.
2. Scenari non adatti:

Main servo color registration, high-precision closed-loop printing (MM440 has no encoder closed-loop interface).

Outdoor and explosion-proof printing equipment (IP20 cabinet mounting only, no explosion-proof certification).

Motor cables longer than 50m: external output reactor mandatory, otherwise film static electricity and interference will intensify.

3. Ciclo di vita del prodotto: MM440 series discontinued; select upgraded G120 filter model 6SL3224-0BE25-5AA0 for new projects. Prioritize stock 6SE6440-2AD25-5CA1 units for spare part replacement of legacy machines.