Digital guide
You are here:
Detailed content
Product Introduction:
The AKD-P04807-NBE is a single-axis PWM (Pulse Width Modulation) servo drive from the AKD product family, rated at 48 A continuous and 7 kW peak power. The “P” denotes PWM output topology. The “NBE” configuration specifies: N = No line filter, B = With brake chopper, E = EtherCAT communication.
Technical Specifications:
| Parameter | Value |
|---|---|
| Drive Type | PWM (Pulse Width Modulation) — IGBT output |
| Continuous Current Rating | 48 A RMS (per phase) |
| Peak Current Rating | 144 A (3× continuous, 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 |
| Control Modes | Position, Velocity, Torque, Cyclic Synchronous Position (CSP), Cyclic Synchronous Velocity (CSV), Cyclic Synchronous Torque (CST), Profile Position, Profile Velocity, Profile Torque, Homing |
| Communication Interface | EtherCAT (E) — 100 Mbps, fully deterministic |
| Feedback Inputs | Sine/Cosine resolver, Incremental encoder (TTL/HTL/RS-422), BiSS, EnDat 2.2, Hiperface DSL, SSI, Tamagawa |
| Brake Chopper | Yes (B) — Integrated brake chopper, 700 W dissipation |
| Line Filter | No (N) — External filter required if EMC compliance needed |
| Digital I/O | 8 inputs, 4 outputs (24 VDC, 250 mA sink/source) |
| Analog I/O | 2 analog inputs (0–10 V, ±10 V), 1 analog output (0–10 V) |
| Safety Features | STO (Safe Torque Off), SLS (Safely Limited Speed), SLP (Safely Limited Position), SOS (Safe Operating Stop) — SIL2/PLd capable with option card |
| Enclosure Rating | IP20 (chassis mount), NEMA 1 (with optional cover) |
| 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 ambient airflow |
Structural Features:
- IGBT power stage — 6-switch 3-phase bridge, 650 VDC rated.
- Integrated brake chopper transistor — Dissipates regenerative energy from motor braking.
- EtherCAT slave port — RJ45 connector; supports distributed clock (DC) for < 1 μs jitter.
- Modular terminal blocks — Pluggable connectors for power, motor, encoder, and I/O.
- LED status indicators — Power, Ready, Fault, Warning.
Working Principle:
The AKD receives a motion command (position/velocity/torque) via EtherCAT from a master controller (PLC, CNC, motion controller). The internal servo loop (current loop → velocity loop → position loop) runs at 8 kHz. The PWM stage switches IGBTs at 8 kHz to synthesize sinusoidal motor current. The resolver/encoder provides feedback for closed-loop control. The brake chopper activates when DC bus voltage exceeds 410 VDC, dissipating excess energy through an internal resistor.
Key Advantages:
- 7 kW continuous in compact chassis — High power density.
- EtherCAT native — Seamless integration with Beckhoff, Omron, B&R, and other EtherCAT masters.
- Full servo tuning suite — Auto-tune via AKD Workbench software.
- Integrated brake chopper — No external brake resistor needed for most applications.
- SIL2/PLd safety capable — With optional safety module.
Applicable Industries:
CNC machines, Packaging machinery, Printing presses, Robotics, Material handling, Textile machinery, General automation.
Installation Requirements:
- Mount vertically on DIN rail or panel with ≥ 100 mm clearance above and below for airflow.
- Input power: 3-phase 200–480 VAC, ≥ 25 A circuit breaker (for 480 VAC).
- Motor cable: Use shielded 3-phase cable, ≤ 5 m recommended (use output reactor for longer runs).
- Encoder cable: Shielded twisted pair; max length 15 m (use line driver for longer).
- Ground drive chassis to protective earth: ≤ 0.1 Ω.
- Ambient airflow: ≥ 1.2 CFM across drive — do not mount in enclosed cabinet without fan.
Usage Precautions:
- Do not operate without heatsink/fan — thermal shutdown at 85°C junction temperature.
- Input line filter (external) required for EMC compliance in EU — configuration “N” means no internal filter.
- Brake chopper dissipates 700 W max — if regenerative energy exceeds this, add external brake resistor.
- Do not exceed 48 A continuous per phase — IGBT thermal limit.
- Firmware must be updated via AKD Workbench before commissioning.
