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Kollmorgen AKD-P04807-NBS
Product Introduction:
The AKD-P04807-NBS is a single-axis digital servo drive from Kollmorgen’s AKD-P product line, rated at 48 A continuous current and 7 kW output. The “NBS” configuration denotes a standard single-axis drive with CANopen communication, built-in braking chopper and braking resistor (no external components required), 24 VDC logic, and support for all standard Kollmorgen servo motor feedback protocols. The internal braking resistor is rated at 1.5 kW continuous.
Detailed content
Model Series: AKD-P Series
Technical Specifications:
| Parameter | Value |
|---|---|
| Continuous Current (RMS) | 48 A per phase |
| Peak Current | 144 A (3 seconds) |
| Rated Power | 7.0 kW (at 325 VDC bus) |
| DC Bus Voltage | 325 VDC (nominal), 200–540 VDC range |
| Input Voltage | 3-phase 380–480 VAC (50/60 Hz) |
| Communication Interface | CANopen (CiA 402) |
| Control Modes | Position, Velocity, Torque, Cyclic Synchronous |
| Encoder Input | Differential RS-422 (EnDat 2.2, Hiperface DSL, BiSS) |
| Digital I/O | 8 inputs / 4 outputs (24 VDC) |
| Analog I/O | 2 analog inputs (±10 V) / 1 analog output (±10 V) |
| PWM Frequency | 8 kHz (configurable up to 16 kHz) |
| Current Loop Bandwidth | 1.2 kHz |
| Velocity Loop Bandwidth | 400 Hz |
| Position Loop Bandwidth | 200 Hz |
| Regeneration | Built-in braking chopper + 1.5 kW internal resistor |
| Operating Temperature | 0°C to 50°C |
| Enclosure Rating | IP20 (chassis mount) |
| Dimensions (W×H×D) | 140 mm × 220 mm × 210 mm |
| Weight | 4.0 kg |
| Safety Certifications | UL 508C, CE, cULus |
Structural Features:
- Book-style chassis-mount enclosure
- Integrated heatsink with forced-air fan
- Internal braking resistor and chopper module (no external components)
- Screw-terminal power, motor, and I/O connections
- DIN rail or panel mount capability
Material Composition:
- Enclosure: Galvanized steel, powder-coat
- Heatsink: Extruded aluminum (6063-T5)
- Power Electronics: IGBT modules (650 V)
- Internal Braking Resistor: Wire-wound ceramic resistor, 1.5 kW, 50 Ω
- Braking Chopper: IGBT module with control circuit
- PCB: FR-4, conformal coated
- Connectors: Phoenix Contact screw terminals
Working Principle:
Three-phase AC input is rectified to a 325 VDC bus. IGBT-based PWM inverter stages synthesize three-phase sinusoidal currents for the servo motor. Three-loop cascade control (current/velocity/position) operates as in all AKD-P drives. During deceleration or overhauling loads, regenerative energy raises the DC bus voltage. The internal braking chopper activates when bus voltage exceeds 390 VDC, switching the braking resistor across the bus to dissipate energy. CANopen provides real-time command exchange with the host controller.
Functional Features:
- Autotuning for optimized PID gains
- Feedforward control (velocity, acceleration, torque)
- Electronic gear ratio: 1:1 to 10000:1
- Trapezoidal and S-curve profile generation
- Electronic camming (up to 32 segments)
- Safe Torque Off (STO) per IEC 61800-5-2
- Fault logging with timestamped diagnostics
- Internal resistor eliminates external braking resistor wiring
Advantages:
- Built-in braking resistor — zero external components for regeneration
- Simplest installation of all 4807 variants — plug and play
- CANopen interface for wide PLC compatibility
- 48 A continuous current for largest servo motors
- Wide bus voltage range (200–540 VDC)
Applicable Industries:
- Metal cutting machines
- Presses and stampers
- Large conveyor systems
- Plastic injection molding
- Heavy-duty packaging machines
Installation Requirements:
- Mount vertically with 100 mm clearance above and below
- Connect 3-phase 380–480 VAC power (min 6 mm² copper wire)
- Connect 24 VDC logic power (max 2 A)
- Ground chassis to PE
- Encoder cable max 30 m (EnDat 2.2)
- No external braking resistor required — internal resistor is pre-installed
Usage Notes:
- Internal 1.5 kW resistor handles moderate regeneration duty (up to ~30% of cycle time)
- For high-regeneration duty (>30%), external resistor is still recommended
- Verify motor inductance is within 0.5–5.0 mH range
- Configure current limit to 110% of motor rated current
