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Siemens 1FL6042-2AF21-1AB1 Servo Motor Siemens 1FL6042-2AF21-1AB1 Servo Motor
The 1FL6042 series is a core product line in Siemens’ SIMOTICS S‑1FL6 family, designed specifically for the SINAMICS V90 Servo Drive System. It is divided into Low Inertia (LI) and High Inertia (HI) versions, covering power ratings of 0.4 kW and 0.75 kW, and supporting 230 V / 400 V power supply.
- Convenção de Nomenclatura de Modelo
| Segmento de código | Descrição | Values for 1FL6042 Series |
| 1FL6 | Siemens SIMOTICS S series servo motor identifier | Fixo |
| 42 | Product code representing specific power and frame size | Fixo |
| 1AF61 / 2AF21 | Design code | Main distinction |
| – 1AF61: HI, 400 V 3‑phase | ||
| – 2AF21: LI, 230 V 1/3‑phase | ||
| 1-2 | Codificador & connector type | Connector orientation |
| – 1: Straight connector | ||
| – 2: Right‑angle connector (HI only) | ||
| UM / G / eu / M | Tipo de codificador | Feedback selection |
| – A/G/H: Incremental (2500 incr./rev) | ||
| – eu: Absolute (20‑bit single‑turn, 12‑bit multi‑turn) | ||
| – M: Incremental (2500 incr./rev), plain shaft | ||
| UM / B | Brake configuration | Brake option |
| – UM: No brake | ||
| – B: With brake |
- Lista completa de modelos & Key Parameter Comparison
2.1 Low Inertia Series (LI, 2AF21, 0.75 kW, 230 V)
Optimized low‑inertia rotor design for high‑dynamic performance.
Frame size 40 mm, rated torque 2.39 Nm, peak torque 7.20 Nm, rated speed 3000 rpm.
| Modelo | Encoder Type | Shaft Type | Brake | Principais recursos |
| 1FL6042‑2AF21‑1AA1 | Incremental (2500) | Keyed | Não | Versão básica, straight connector |
| 1FL6042‑2AF21‑1AB1 | Incremental (2500) | Keyed | Sim | With brake, for vertical loads |
| 1FL6042‑2AF21‑1AG1 | Incremental (2500) | Plain | Não | Plain shaft for special couplings |
| 1FL6042‑2AF21‑1AH1 | Incremental (2500) | Plain | Sim | Plain shaft + brake |
| 1FL6042‑2AF21‑1LA1 | Absolute (20‑bit) | Keyed | Não | Absolute encoder, no homing required |
| 1FL6042‑2AF21‑1LB1 | Absolute (20‑bit) | Keyed | Sim | Absolute encoder + brake |
| 1FL6042‑2AF21‑1MA1 | Incremental (2500) | Plain | Não | Plain shaft, straight connector |
| 1FL6042‑2AF21‑1MB1 | Incremental (2500) | Plain | Sim | Plain shaft + brake, straight connector |
2.2 High Inertia Series (HI, 1AF61, 0.4 kW, 400 V)
High‑inertia rotor for stable operation and better inertia matching.
Frame size 45 mm, rated torque 1.27 Nm, peak torque 1.9 Nm, rated speed 3000 rpm.
| Modelo | Encoder Type | Connector | Brake | Principais recursos |
| 1FL6042‑1AF61‑0AA1 | Incremental (2500) | Straight | Não | Básico, 400 V 3‑phase |
| 1FL6042‑1AF61‑0AB1 | Incremental (2500) | Straight | Sim | With brake |
| 1FL6042‑1AF61‑0AG1 | Incremental (2500) | Straight | Não | Plain shaft |
| 1FL6042‑1AF61‑0AH1 | Incremental (2500) | Straight | Sim | Plain shaft + brake |
| 1FL6042‑1AF61‑0LA1 | Absolute (20‑bit) | Straight | Não | Absolute encoder |
| 1FL6042‑1AF61‑0LB1 | Absolute (20‑bit) | Straight | Sim | Absolute encoder + brake |
| 1FL6042‑1AF61‑2AA1 | Incremental (2500) | Right‑angle | Não | Right‑angle connector, economia de espaço |
| 1FL6042‑1AF61‑2AB1 | Incremental (2500) | Right‑angle | Sim | Right‑angle + brake |
| 1FL6042‑1AF61‑2AG1 | Incremental (2500) | Right‑angle | Não | Plain shaft + right‑angle |
| 1FL6042‑1AF61‑2AH1 | Incremental (2500) | Right‑angle | Sim | Plain shaft + right‑angle + brake |
| 1FL6042‑1AF61‑2LA1 | Absolute (20‑bit) | Right‑angle | Não | Absolute encoder + right‑angle |
| 1FL6042‑1AF61‑2LB1 | Absolute (20‑bit) | Right‑angle | Sim | Absolute encoder + right‑angle + brake |
- Principais diferenças & Guia de seleção
3.1 LI vs HI Core Comparison
| Item | Baixa Inércia (2AF21) | High Inertia (1AF61) | Dica de seleção |
| Poder | 0.75 kW | 0.4 kW | Match load power |
| Tensão | 230 V (1/3-fase) | 400 V (3-fase) | Match site power |
| Torque nominal | 2.39 Nm | 1.27 Nm | Higher torque density: LI |
| Peak Torque | 7.20 Nm | 1.9 Nm | Better dynamics: LI |
| Inércia do Rotor | Baixo (0.897 kg·cm²) | Alto | HI for high‑inertia loads; LI for fast start/stop |
| Tamanho do quadro | 40 mm | 45 mm | HI is slightly larger |
3.2 Encoder Selection
| Encoder Type | Vantagens | Aplicações Típicas |
| Incremental | Menor custo, resposta rápida | General positioning, no position retention after power loss |
| Absolute | Position retained after power loss, no homing | High‑precision positioning, quick recovery after safety stop |
3.3 Brake Selection
| Configuração | Aplicações Típicas |
| With Brake | Vertical axes, drop prevention, emergency holding |
| Sem freio | Horizontal axes, custo-benefício, high‑speed applications |
- Compatibilidade & Aplicativos
All 1FL6042 series motors are fully compatible with SINAMICS V90 servo drives, support PROFINET / EtherCAT, and have IP65 protection.
Baixa Inércia (2AF21): Electronics manufacturing, máquinas de embalagem, máquinas de etiquetagem, high‑speed conveyors
High Inertia (1AF61): Printing machinery, textile equipment, pequenas máquinas-ferramentas, material handling systems
