MM05A-503 (SEW MOVIMOT A‑series)
May 28, 2026

MM05A-503 (SEW MOVIMOT A‑series)

MM05A-503-00 (short MM05A-503) is a 0.55 kW motor‑mounted frequency inverter from the original MOVIMOT MM‑A series (older generation, before MM‑C/MM‑D). It’s a decentralized drive for SEW three‑phase motors, used in conveyors, packaging, and general automation.

Description

1. Product Overview

MM05A-503-00 (short MM05A-503) is a 0.55 kW motor‑mounted frequency inverter from the original MOVIMOT MM‑A series (older generation, before MM‑C/MM‑D). It’s a decentralized drive for SEW three‑phase motors, used in conveyors, packaging, and general automation.

2. Model Code Meaning

  • MM: MOVIMOT decentralized drive

  • 05: Rated motor power 0.55 kW

  • A: A‑series (original, basic version)

  • 503: 3‑phase 380–500 V AC supply

  • ‑00: Standard version (full model: MM05A‑503‑00)

3. Key Technical Data

3.1 Electrical

  • Input: 3×380–500 V AC (±10%), 50/60 Hz

  • Rated output power: 0.55 kW

  • Rated output current: 2.0 A

  • Output frequency: 2–100 Hz

  • Control: U/f (basic) / vector (VFC) optional

  • I/O: 4 digital inputs / 2 digital outputs (fixed mapping on A‑series)

  • Communication: RS‑485 (optional, not standard)

  • Safety: No STO (Safe Torque Off) option

  • Brake: Basic brake control (for SEW brake motors)

  • Overload: 150% for 60 s

3.2 Mechanical & Environmental

  • Protection class: IP55

  • Cooling: Natural convection

  • Dimensions (W×H×D): ~120 × 180 × 80 mm

  • Weight: ~2.6 kg

  • Operating temperature: ‑25 °C to +40 °C

  • Storage temperature: ‑25 °C to +70 °C

4. Main Features (A‑series vs C/D)

  1. Basic control: Primarily U/f; limited vector tuning.

  2. Fixed I/O mapping: Less flexible than C/D series.

  3. No integrated EMC filter: Requires external filter.

  4. No STO safety: Lower safety level than later models.

  5. Simple commissioning: DIP switches only (no potentiometers).

5. Typical Applications

  • Older conveyor systems

  • Basic packaging machinery

  • Material handling (low complexity)

  • General automation with simple speed control

6. Installation & Wiring

6.1 Mechanical

  • Mount directly on SEW motor flange (torque 3.0 Nm).

  • Keep ventilation clear; avoid heat sources.

6.2 Electrical

  • Power: L1/L2/L3/PE → 380–500 V AC

  • Motor: U/V/W/PE → shielded cable

  • Control (X6): 24 V DC, direction, enable, fault

7. Commissioning (Simplified)

  1. Check wiring and insulation.

  2. Set DIP switches (address, brake mode, U/f curve).

  3. Power on; green LED = ready.

  4. Test run at low speed, then ramp up.

8. Status & Faults (2‑color LED)

  • Green steady: Ready

  • Green flash: Running

  • Red flash: Fault (overcurrent, overvoltage, overtemperature)

9. Maintenance & Replacement

  • Clean heat sink every 6 months.

  • Check terminal torque (0.8–1.5 Nm).

  • Upgrade note: MM05A is obsolete; direct replacement is MM05C‑503 or MM05D‑503 (better performance, safety, and features).


Get a Quote