Siemens 6SE6440-2UC15-5AA1 Frequency Inverter

✅ Model Code Explanation

📋 Key Technical Specifications

Potência nominal: 0.55 kW (Torque Constante)

Tensão de entrada: AC 200–240V ±10%, 47–63Hz, compatible with single-phase or three-phase input

Corrente de saída nominal: 3.0 UM

Capacidade de sobrecarga: 150% for 60s; 200% por 3s

Classe de Proteção: IP20

Dimensões Gerais(A×L×P): 173 × 73 × 149 milímetros (Frame Size A)

Peso líquido: aprox.. 1.3 kg

Temperatura ambiente: -10 ~ +50℃ (no power derating)

Modos de controle: Controle V/F, controle vetorial, PID integrado, Compatível com Modbus RTU

Standard Equipment: BOP panel; sem filtro EMC integrado

📌 Product Lifecycle

MM440 discontinued in 2019, available only as spare parts. No mass-production new units. Stock new units or used refurbished units circulate in the market.

🔄 Replacement Selection

1. Direct replacement series: G120 Inverter

Recomendado: 6SL3210-1PB13-0UL0 (0.55kW 220V, without filter), BOP-2 panel to be ordered separately.

2. Retrofit Note: Terminal definitions and parameter systems differ between MM440 and G120. Control logic and parameters require full re-commissioning.

🛠 Typical Applications

Correias transportadoras, pequenos fãs & bombas de água, misturadores, equipamento de transporte pequeno, máquinas de embalagem. Suitable for speed regulation of 0.55kW, 220V AC asynchronous motors.

📎 Optional Accessories

BOP: 6SE6400-0BP00-0AA1 (factory fitted)

AOP Advanced Operator Panel: 6SE6400-0AP00-0AA1

Filtro EMC: 6SE6400-2FA00-6AD0

Resistor de Frenagem: Optional as required (usually unnecessary for 0.55kW low power)

⚠️ Troubleshooting Summary (General for MM440)

1. F0001 Overcurrent: Curto-circuito do motor, cabo danificado, falha de terra, power module failure
2. F0002 Overvoltage: Desaceleração rápida, grid surge; braking resistor may be required
3. F0003 Undervoltage: Missing input phase, voltage drop
4. F0011 Overtemperature: Blocked cooling channel, excessive ambient temperature, fan damage

Código HS

85044084 (Static converters, frequency inverters)

Siemens 6SE6440-2UC15-5AA1 (MM440, 220V 0.55kW) Cenários de aplicação

Recursos principais: Single/three-phase 220V power supply, controle vetorial, PID integrado, Modbus RTU, stable speed regulation at low torque. Power limited to 0.55kW, only compatible with small-load motors, widely used for stand-alone small automation equipment retrofit and spare part replacement for legacy machines.

1. Transporte de Materiais (Mais Comum)
2. Transportadores de correia pequenos, transportadores de rolos: Short packaging line conveyors, laboratory transport tables, small sorting branch lines. Soft start & soft stop prevent material slipping or tipping; multi-speed function available.
3. Small hoists / miniature winches: Light-duty lifting mechanisms. MM440 vector control delivers stable low-speed torque for light-load lifting within 0.55kW power limit.
4. Equipamento Fluido (Fãs & Bombas, PID for constant pressure/flow)
5. Ventiladores centrífugos pequenos, duct exhaust fans: Workshop local exhaust, oven circulation fans; energy saving via variable speed drive.
6. Mini water pumps, bombas dosadoras: Abastecimento de água com pressão constante, chemical dosing pumps. Built-in PID performs closed-loop constant pressure/flow control with 4-20mA analog feedback.

Advantage for low-flow cases: 220V single-phase power input, preferred where 380V three-phase power is unavailable on site.

III. Embalagem & Light Industrial Machinery

1. Pequenas máquinas de embalagem: Film feeding for pillow packaging, label feed motors, screw bottle separation drive. Smooth start-stop and PLC-linked speed control.
2. Food light industry equipment: Small mixing tanks, liquidificadores, extrusion actuators (0.55kW small mixing motors), auxiliary drives for food production lines.
3. Textile auxiliary machines: Small rewind/unwind units for simple tension control.
4. Máquinas-ferramentas & Automation Auxiliary Equipment
5. Machine tool auxiliary drives: Coolant pumps, small lubrication pumps, auxiliary table feed motors.
6. Mesas rotativas, indexing turntables: Stable low-speed rotation for point positioning.
7. Automation training benches / teaching equipment: Classic MM440 teaching unit for colleges, used to learn vector control, Modbus communication and multi-speed programming.
8. AVAC, Prédio & Other Auxiliary Systems
9. Small air damper actuators, fresh air units
10. Gate valves, small roller shutter drives: Speed control for workshop small doors and automatic roller shutters
11. Spare part replacement for legacy equipment: Retrofit for original equipment fitted with this MM440 model. The series is discontinued, so it is mostly used for maintenance replacement.

✅ Selection Prerequisites & Limitações

Fonte de energia: Site available power is AC220V (single-phase input can drive three-phase motors)

Motor: Rated motor power ≤0.55kW three-phase asynchronous motor

Pontos fortes: Good low-speed torque with vector control, equipped with BOP panel, PID integrado, relay/analog I/O, Comunicação Modbus; more capable than basic simple inverters

❌ Não adequado: Heavy shock loads, high-power machinery, main hoisting winches, continuous high-overload operating conditions

Supporting Control Schemes

Local speed setting via panel: Manual frequency adjustment through BOP

Multi-speed via terminals: DI digital terminals for preset speed levels

Analog closed-loop: AI connected to pressure/flow sensors, PID automatic constant pressure/flow regulation

Comunicação CLP: Modbus RTU for PLC to read/write frequency, running status and fault codes

Siemens 6SE6440-2UC15-5AA1 (MM440 0.55kW 220V, No Built-in EMC Filter) Replacement Models Summary

Original unit features: AC200~240V single/three-phase input, controle vetorial, PID, Modbus RTU, 4DI/2AI/2AO, 2 saídas de relé; descontinuado, no new original production.

Prioridade de seleção: Siemens official successor models → Siemens economy models → Domestic vector inverters

1. Siemens Officially Recommended Replacements (Primeira escolha, Closest function to MM440)
2. SINAMICS G120 (Modular, function matches MM440, for complex original control: PID, multivelocidade, Modbus)

Módulo de potência: 6SL3210-1PB13-0UL0 (200-240V, 0.55kW, sem filtro integrado, output current 3A consistent with original unit)

Matching Control Unit: CU240E-2 (6SL3244-0BB12-1BA1), optional BOP-2 panel (6SL3255-0AA00-4CA1)

✅ Vantagens: Sensorless vector support, PID integrado, Modbus RTU, I/O count close to MM440; expandable communication

⚠️ Nota: Terminal definitions and parameter codes are fully incompatible; parameters cannot be copied directly. Re-commissioning required, cutout dimensions differ.

2. G120C Compact Integrated Type (All-in-one, simple installation, economia de espaço, preferred for fans/conveyors/pumps)

Pedido nº.: 6SL3210-1KE11-8UB2 (220V 0.55kW, sem filtro, integrated built-in control unit, BOP interface available)

✅ All-in-one design, separate power module + CU not required. Ideal for cabinet retrofit with limited space; STO safety function integrated

⚠️ I/O count slightly less than original MM440; evaluate carefully for complex logic

3. SINAMICS V20 (Tipo de economia, simple speed regulation with budget constraints)

Pedido nº.: 6SL3210-5BB11-2UV1 (220V, 0.55kW, sem filtro integrado)

✅ Lower cost, supports V/F / basic vector, Modbus, multivelocidade; suitable for fans, pumps and simple conveyors without high-precision low-speed torque requirement

❌ Limitações: Vector performance weaker than MM440/G120, not for low-speed heavy-load applications, fewer I/O points

1. Same-series Spare Part Option (Não recomendado para novos projetos, emergency maintenance only)

Stock MM440 original unit: 6SE6440-2UC15-5AA1 stock new / second-hand refurbished

Riscos: Limited supply, high price, no warranty, ageing risk for used units. Only for short-term equipment transition, not for new projects.

III. Substituições Domésticas (Cost-down retrofit, controle vetorial, 220V single-phase input driving three-phase motors)

Applicable for retrofit projects where wiring and PLC program modification are permitted, pursuing cost advantages

1. Inovance MD600 / MD380 220V 0.55kW: Controle vetorial, Modbus, PID, abundant I/O
2. INVT GD20: General vector inverter, widely used for packaging & conveying machinery
3. Delta VFD-EL / VFD-M: Low-power 220V single-phase input, basic speed regulation scenarios

📌 Selection Comparison Table

⚠️ Critical Retrofit Notes

1. Compatibilidade da fonte de alimentação: The original unit accepts single-phase 220V input for three-phase motor drive. G120C/G120/V20 models of the same specification also support this mode.
2. Dimensões de recorte: Frame A cutout for MM440 differs from G120/V20. Cabinet cutout modification is usually required.
3. Parameter Incompatibility: MM440 P-parameter system is independent from G120/V20; parameter upload/download cannot be performed directly.
4. EMC: Original unit has no integrated filter. Select filterless variant for replacement. Install external EMC filter if noise immunity is needed.
5. Frenagem: Evaluate braking resistor sizing if the machine requires rapid stopping.

✅ Quick Selection Guidance

Original machine uses low-speed vector, PID constant pressure, Comunicação Modbus, multi-speed → Select G120 (modular CU240E-2)

Simple fan/conveyor application, all-in-one unit preferred for compact cabinet → G120C

Basic speed regulation only, no complex closed loop, budget priority → V20

Cost reduction project, domestic commissioning acceptable → Inovance / INVT and other domestic vector inverters