AKM54K-ACCNR00

Brushless Permanent‑Magnet Synchronous Servo Motor

English Instruction Manual

1. GENERAL DESCRIPTION

2. MODEL NUMBER DEFINITION

• AKM: Kollmorgen AKM servo motor series

• 5: Frame size 5 (108×108 mm IEC flange)

• 4: Stack length 4 (long, high torque)

• K: Winding K (400/480 VAC; 320–640 VDC bus, high speed)

• A: Standard IEC flange mount (IM B5)

• C: 24 VDC holding brake

• C: Smooth shaft, no keyway

• N: Standard shaft seal (IP65)

• R: Resolver feedback (no encoder)

• 00: No special modifications

3. TECHNICAL SPECIFICATIONS

Electrical Data (typical @ 25 °C)

• Rated power: 3.87 kW @ 640 VDC bus

• Rated torque: 9.25 Nm (continuous)

• Stall torque: 14.4 Nm

• Rated current: 9.7 Arms (continuous)

• Max speed: 4,000 rpm

• Torque constant: ~1.48 Nm/A

• Winding resistance: ~1.8 Ω (line‑to‑line)

• Insulation class: F (155 °C)

• Thermal sensors: PTC (standard)

• Brake: 24 VDC, holding torque ≥16 Nm

Mechanical Data

• Flange: 108×108 mm IEC (NEMA 42 equivalent)

• Shaft: 32 mm diameter, smooth (no keyway)

• Protection class: IP65 (dust‑tight, splash‑proof)

• Vibration class: N (DIN EN 60034‑14)

• Feedback: Resolver (2‑pole, high reliability, no electronic components)

• Connectors: Dual M23, rotatable (power + resolver)

• Weight: approx. 11.5 kg

• Ambient temperature: 0 °C to +40 °C (operation)

• Humidity: 95% rel. humidity, non‑condensing

Shaft Loads

• Max radial load: 450 N

• Max axial load: 180 N

4. KEY FEATURES

• High torque density: Long stack (54K) delivers 14.4 Nm stall torque in a compact 108 mm flange.

• K‑winding: Optimized for 400/480 VAC mains and 320–640 VDC bus systems, high speed capability.

• Integrated 24 VDC brake: Ideal for vertical axes, holding torque ≥16 Nm.

• Resolver feedback: Extremely reliable, immune to EMI, high temperature tolerance, no fragile electronics.

• IP65 protection: Suitable for harsh industrial environments (dust, moisture, coolant).

• Brushless design: Low maintenance, long service life, high efficiency.

• PTC thermal protection: Prevents overheating in stator windings.

5. APPLICATIONS

• Heavy‑duty high‑torque positioning systems

• Vertical motion axes (with fail‑safe brake)

• CNC machine tools, milling/turning centers

• Material handling, gantry systems, robotics

• 400/480 VAC industrial automation systems

6. COMPATIBLE DRIVES

• Kollmorgen AKD / AKD2G series 400/480 VAC servo drives (resolver‑compatible).

7. INSTALLATION & WIRING (SUMMARY)

Mounting

• Use a clean, flat, rigid mounting surface.

• Secure with 4×M10 screws; torque to 18–20 Nm.

• Align shaft coupling carefully to avoid radial/axial overloads.

• Ensure adequate cooling airflow around the motor.

Wiring

• Power: Shielded 3‑phase cable to M23 power connector; ground shield at drive end.

• Resolver: Shielded resolver cable to M23 feedback connector; separate from power cables.

• Brake: Separate 24 VDC supply; brake engages when power is removed (fail‑safe).

• EMC: Separate motor cables from control cables; use shielded cables throughout.

8. MAINTENANCE

• Bearings: Lubricated for life; no re‑greasing required.

• Seals: Inspect periodically to maintain IP65 rating.

• Connectors: Check for tightness, corrosion, or moisture; keep connectors dry.

• Brake: Test holding torque annually; adjust or replace if necessary.

• Diagnostics: Use Kollmorgen WorkBench software for fault monitoring, tuning, and thermal analysis.

9. SAFETY NOTES

• Disconnect all power (motor, brake, control) before installation or maintenance; motor remains live briefly after stop.

• Ground motor housing properly to avoid electric shock.

• Do not exceed max speed (4,000 rpm) or stall torque (14.4 Nm); risk of damage or injury.

• Brake is for holding only; do not use for dynamic stopping.

• For vertical axes, ensure brake power is fail‑safe (brake engages on power loss).