1. Product Overview

2. Model Code Explanation

• MM: MOVIMOT decentralized drive system

• 15: Rated power 1.5 kW

• A: A‑series (first generation, obsolete)

• 503: 3‑phase 380–500 V AC

• ‑00: Standard configuration

• Part number: 8241151 (MM15A-503-00)

3. Technical Specifications

3.1 Electrical Parameters

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

• Rated Input Current: 3.5 A

• Rated Output Power: 1.5 kW

• Rated Output Current: 4.2 A

• Output Frequency Range: 2–100 Hz

• Control Mode: U/f (V/f) control (basic, no vector control)

• Digital I/O: 3 programmable inputs / 1 programmable output

• Communication: No onboard communication (optional module required)

• Brake Function: Integrated brake control (for SEW brake motors)

• Overload Capacity: 150% rated current for 60 seconds

• EMC: No built‑in filter (external EMC filter required, Class A)

3.2 Mechanical & Environmental Parameters

• Protection Class: IP55

• Cooling Method: Natural convection (basic heat sink)

• Dimensions (W×H×D): Approx. 140×180×110 mm

• Weight: 1.6 kg

• Operating Temperature: 0 °C to +40 °C (no low‑temp rating)

• Storage Temperature: ‑20 °C to +60 °C

4. Key Features (vs. Newer B/C/D‑series)

• ✅ Compact motor‑mounted design (saves cabinet space)

• ✅ Integrated brake control for SEW brake motors

• ❌ No built‑in EMC filter (external filter mandatory)

• ❌ No vector control (only basic U/f)

• ❌ No communication port (add‑on only)

• ❌ Louder operation (lower PWM frequency: 8 kHz)

• ❌ Narrower temperature range (no ‑25 °C rating)

5. Product Status & Replacement

• MM15A-503: Obsolete, discontinued (spare parts limited)

• Direct Replacement: MM15D-503 (latest D‑series, plug‑and‑play compatible)

6. Typical Applications (Legacy Installations)

• Older material handling conveyors

• Legacy packaging and labeling machinery

• Industrial fans and pumps in existing systems

• Anywhere a basic, low‑cost decentralized drive was used

7. Installation & Wiring

7.1 Mechanical

1. Mount directly to SEW DRS/DRE motor flange

2. Tighten mounting screws to 2.8 Nm

3. Ensure ventilation; avoid heat sources (poor thermal design)

7.2 Electrical

1. Power: L1/L2/L3/PE → 3×380–500 V AC (reliable grounding)

2. Motor: U/V/W/PE → shielded cable to motor terminals

3. Control: 24 V DC for run/stop, direction, enable

4. EMC: External filter required (install close to input terminals)

8. Commissioning

1. Check wiring/insulation before power‑on

2. Set motor parameters via DIP switches (basic U/f only)

3. Power on: steady green = standby

4. Test at low speed; check noise/vibration (8 kHz PWM is loud)

9. LED Status & Common Faults

9.1 LED

• Steady green: Ready

• Flashing green: Running

• Flashing red: Fault

9.2 Common Faults

• Overcurrent: Short circuit, overload, motor fault

• Overvoltage: Input surge or regenerative voltage

• Overtemperature: Poor ventilation (common in A‑series)

• EMC issues: Noise interference (no built‑in filter)

10. Maintenance

• Clean heat sink every 3 months (prone to overheating)

• Check terminal tightness monthly

• Replace damaged seals to maintain IP55

11. Storage & Disposal

• Store in dry, clean environment (0 °C to +40 °C)

• Dispose per local WEEE directives