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Product Introduction:
The AKD-B04807-NBA is a single-axis bus-type servo drive from the AKD family, rated at 48 A continuous / 7 kW. The “B” denotes bus-type (EtherCAT native) topology, distinct from the “P” (PWM) variant. Configuration “NBA”: N = No line filter, B = With brake chopper, A = Analog I/O option (enhanced).
Technical Specifications:
| Parameter | Value |
|---|---|
| Drive Type | Bus-type (EtherCAT native) — IGBT output |
| Continuous Current Rating | 48 A RMS (per phase) |
| Peak Current Rating | 144 A (10-second duration) |
| Continuous Power Rating | 7 kW (9.4 HP) at 480 VAC |
| Peak Power Rating | 21 kW (28.2 HP) for 10 seconds |
| Bus Voltage Range | 200–480 VAC (3-Phase input), 270–650 VDC (DC bus) |
| PWM Switching Frequency | 8 kHz (default), adjustable 4–16 kHz |
| Communication | EtherCAT (native) — 100 Mbps, DC-synchronized, < 1 μs jitter |
| Control Modes | Position, Velocity, Torque, CSP, CSV, CST, Profile Position, Profile Velocity, Profile Torque, Homing, Electronic Gearing, Electronic Camming, FFT, Torque Ripple Compensation |
| Feedback Inputs | Sine/Cosine resolver, Incremental encoder (TTL/HTL/RS-422), BiSS, EnDat 2.2, Hiperface DSL, SSI, Tamagawa, SSI, 1 Vpp sin/cos |
| Brake Chopper | Yes (B) — Integrated, 700 W dissipation |
| Line Filter | No (N) — External filter required for EMC |
| Analog I/O Option (A) | 2 analog inputs (0–10 V, ±10 V, 16-bit), 2 analog outputs (0–10 V, 16-bit) |
| Digital I/O | 8 inputs, 4 outputs (24 VDC, 250 mA) |
| Safety Features | STO, SLS, SLP, SOS — SIL2/PLd with option card |
| Enclosure Rating | IP20 (chassis mount) |
| Dimensions (W×H×D) | 144 mm × 215 mm × 190 mm (5.67 × 8.46 × 7.48 in) |
| Weight | Approx. 3.2 kg (7.05 lbs) |
| Operating Temperature | 0°C to +45°C (derate above 40°C) |
| Cooling | Forced air — internal fan, 1.2 CFM minimum |
Structural Features:
- Identical power stage to AKD-P04807 — Same IGBT bridge, same brake chopper.
- EtherCAT native slave — No additional gateway needed; drive appears as EtherCAT node.
- Enhanced analog I/O (A option) — 16-bit resolution vs. 12-bit on standard model; suitable for analog command sourcing.
- Modular terminal blocks — Pluggable power, motor, encoder, I/O connectors.
- LED indicators — Power, Ready, Fault, Warning, EtherCAT Link.
Working Principle:
Same core operating principle as AKD-P04807: EtherCAT master sends motion profile (CSP/CSV/CST) to drive. Internal servo loops run at 8 kHz. PWM synthesizes motor current. EtherCAT distributed clock ensures < 1 μs cycle jitter across all axes. Brake chopper activates at 410 VDC bus to dissipate regenerative energy.
Key Advantages (vs. AKD-P04807-NBE):
- EtherCAT native (B vs. P) — Faster cycle times, deterministic motion, no gateway latency.
- Enhanced analog I/O (A) — 16-bit resolution for precision analog command/feedback.
- Same power rating (7 kW, 48 A) — Drop-in replacement for PWM variant in EtherCAT systems.
Applicable Industries:
Same as AKD-P04807-NBE: CNC, Packaging, Printing, Robotics, Material handling, Textile.
Installation Requirements:
- Identical to AKD-P04807-NBE.
- EtherCAT termination: 120 Ω resistor at last device on network.
- For analog I/O use: Use shielded twisted-pair cables; keep away from power cables by ≥ 100 mm.
- Ambient airflow: ≥ 1.2 CFM — mandatory for thermal management.
Usage Precautions:
- Identical to AKD-P04807-NBE.
- EtherCAT cable: Use Cat 5e or better shielded cable; max segment length 100 m between nodes.
- Do not exceed 48 A continuous — thermal limit is identical to PWM variant.
- Analog inputs: Do not exceed ±10 V — 16-bit ADC range is 0–10 V or ±10 V selectable.
