AKM21C-ANB2R-00

Synchronous Servo Motor – English Datasheet & Manual

1. GENERAL DESCRIPTION

2. MODEL NUMBER DEFINITION

• AKM: Kollmorgen AKM servo motor series

• 21: Frame size 2 (58×58 mm IEC flange), short stack length 1

• C: Winding type C (230 VAC / 320 VDC max bus)

• A: Standard mounting (IM B5, flange‑mounted)

• N: Smooth shaft, no keyway

• B: 24 VDC holding brake (spring‑applied)

• 2: 16‑bit resolver feedback (2‑pin, hollow shaft)

• R: Rotatable M23 connectors (90° steps)

• 00: No shaft seal; standard mechanical configuration

3. TECHNICAL SPECIFICATIONS

Electrical Data

• Rated power: 0.32 kW (0.43 HP) @ 320 VDC bus

• Rated torque: 0.39 Nm (continuous)

• Stall torque: 0.48 Nm (peak)

• Rated current: 1.58 Arms (continuous, 100°C winding ΔT)

• Max speed: 8,000 rpm

• Winding resistance: 13.0 Ω (line‑to‑line @ 25°C)

• Insulation class: F (155°C)

• Voltage range: 230 VAC / 320 VDC max bus

Mechanical Data

• Flange: 58×58 mm IEC (N tolerance, NEMA 23 equivalent)

• Shaft: 20 mm diameter, smooth (no keyway)

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

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

• Brake: 24 VDC holding brake, spring‑applied, 0.8 Nm holding torque

• Feedback: 16‑bit resolver, 2‑pin, hollow shaft

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

• Weight: approx. 1.55 kg

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

4. KEY FEATURES

• Low inertia design: Fast acceleration/deceleration for high‑dynamic positioning.

• High torque‑to‑size ratio: Compact, high power density.

• Resolver feedback: Robust, noise‑immune, 16‑bit resolution.

• Integrated 24 VDC brake: Safe holding for vertical axes.

• IP65 protection: Suitable for harsh industrial environments.

• Brushless construction: Low maintenance, long service life.

5. APPLICATIONS

• High‑dynamic positioning systems.

• Packaging, printing, textile machinery.

• Small CNC machines, robotics, pick‑and‑place units.

• Vertical motion axes requiring holding brake.

• 230 VAC / 320 VDC industrial automation systems.

6. COMPATIBLE DRIVES

• Kollmorgen AKD / AKD2G series servo drives (230 VAC variants).

7. INSTALLATION & WIRING (SUMMARY)

• Mounting: Clean, flat surface; secure with 4×M5 screws; align shaft coupling to avoid radial/axial overloads.

• Cables: Use shielded power and resolver cables; connect to M23 connectors; ground shields at drive end for EMC.

• Brake: 24 VDC ±10%; apply voltage to release brake; ensure safe wiring for vertical loads.

• Feedback: Resolver wires (2‑pin) connect to drive resolver interface; no encoder battery required.

8. MAINTENANCE

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

• Seals: Inspect periodically to maintain IP65 rating.

• Connections: Check for tightness and corrosion; keep connectors dry.

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

9. SAFETY NOTES

• Disconnect power before installation or maintenance; motor remains live briefly after stop.

• Ground motor housing properly to avoid electric shock.

• Do not exceed max speed or stall torque; risk of damage or injury.

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