Technical & Performance Specifications

• Input Power Rating: Three-phase 380/480 VAC mains input, operating voltage range 187–528 VAC, 50/60Hz grid frequency
• Continuous Output Current: 6 Arms RMS
• Peak Overload Output Current: 18 Arms RMS (300% short-time overload capacity)
• Continuous Rated Output Power: 4000 W
• Triple Closed-Loop Control Refresh Rate: Torque Loop = 0.67 μs, Velocity Loop = 62.5 μs, Position Loop = 125 μs
• Suffix NAA Hardware Definition:

  N = Single-port EtherCAT CoE real-time industrial Ethernet communication

  A = Standard onboard 16-channel 24VDC digital I/O terminal set

  A = Integrated SIL2 certified STO Safe Torque Off safety circuit

• Supported Feedback Interfaces: SFD, EnDat 2.2, BiSS, Incremental Encoder, Resolver
• Physical Dimensions: Height 168 mm, Width 89 mm, Depth 156 mm
• Protection Class: IP20, cabinet internal DIN rail installation only
• Operating Ambient Temperature: 0°C ~ +45°C full rated power output; 6% power derate per 1000 m altitude elevation
• Certifications: UL, cURus, CE, SIL2 IEC 61508 safety certification
• Storage Temperature Range: -40°C ~ +85°C

Functional Features

1. Single RJ45 EtherCAT bus port supports real-time CoE protocol motion command transmission, minimum synchronization cycle 125 μs
2. Onboard fixed 16-channel digital I/O without external expansion modules for basic sensor and actuator signal connection
3. Full automatic motor parameter identification and adaptive load auto-tuning algorithm for all medium-frame AKM servo motors
4. Native position, velocity, torque closed-loop control modes with built-in electronic gear and basic electronic cam motion functions
5. Multi-level fault detection system monitors overcurrent, overvoltage, overtemperature, encoder feedback loss and motor winding short-circuit with visual LED alarm indication
6. Front panel USB debug port for local parameter configuration, oscilloscope waveform capture and firmware upgrade via Kollmorgen WorkBench software

Material Composition

• Outer Casing: Black coated cold-rolled steel sheet compact enclosure
• Heat Dissipation Structure: Extruded aluminum alloy passive fin heat sink without built-in cooling fan
• Power Stage Module: High-voltage IGBT silicon power transistors mounted on insulated ceramic substrates
• Terminal Blocks: Flame-retardant PA66 plastic with tin-plated copper conductive terminals
• Internal Circuit Boards: High-withstand-voltage FR4 flame-retardant PCB substrate
• Communication Connector: Gold-plated RJ45 EtherCAT port metal housing

Structural Characteristics

1. Compact vertical 35 mm DIN rail mounting design to minimize cabinet space occupation for multi-axis low-power production lines
2. Isolated partition layout separating high-voltage power circuit and low-voltage signal communication circuit to suppress electromagnetic interference
3. Top passive fin heat sink, bottom natural convection air intake channel; no integrated cooling fan for reduced mechanical failure points
4. Front panel integrated LED status indicators for power, fault alarm and EtherCAT bus communication, plus accessible USB debug port
5. Rear side independent terminal blocks for three-phase power input, motor power output and encoder feedback wiring

Working Principle

1. Three-phase 380/480VAC mains input passes internal EMC filter and full-wave rectifier to generate stabilized high-voltage DC bus power
2. DSP digital controller executes triple closed-loop torque/velocity/position control algorithms and outputs PWM modulation signals to high-voltage IGBT power stage
3. Power module converts DC bus power to three-phase sinusoidal AC power to drive medium-frame AKM synchronous servo motor stator windings
4. Motor feedback encoder transmits real-time rotor position and velocity data back to drive feedback interface to form complete closed-loop motion control cycle
5. EtherCAT bus receives motion command frames from upper master controller; internal drive processor executes local axis motion logic without auxiliary control hardware

Advantage Highlights

1. Compact low-cost AKD-B basic series design reduces system hardware procurement cost for standard medium-load automation equipment
2. 6A continuous / 18A peak current output perfectly matches medium-frame AKM servo motors with 2–4 kW rated power
3. Passive heat sink structure eliminates cooling fan maintenance and dust accumulation failure risks
4. Single EtherCAT bus interface compatible with all mainstream EtherCAT master motion controllers
5. Integrated SIL2 STO safety circuit meets global machinery safety compliance standards without external safety relays
6. Small cabinet footprint enables dense multi-axis servo layout for packaging, textile and electronic assembly production lines

Applicable Industries

Installation Requirements

1. Vertical mounting on standard 35 mm DIN rail inside sealed high-voltage control cabinet
2. Mandatory ventilation clearance: 50 mm top heat dissipation gap, 30 mm bottom intake gap, 20 mm lateral separation between adjacent drives
3. Cabinet forced cooling fan required for continuous full-load operation at ambient temperature above 35°C
4. All power and encoder signal cables use shielded twisted pair wiring with single-point shield grounding at cabinet earth bar
5. Separate wiring channels for high-voltage power cables and low-voltage encoder signal cables to avoid electromagnetic cross-interference

Usage Precautions

1. Prohibit exposed installation outside sealed control cabinet; dust and moisture ingress causes permanent high-voltage circuit short-circuit damage
2. Maintain three-phase input voltage strictly within 187–528 VAC range; sustained overvoltage destroys internal high-voltage IGBT power modules
3. Complete motor parameter auto-tuning procedure before formal load operation; mismatched motor parameters induce torque oscillation and overcurrent protection shutdown
4. Do not cut power supply during USB firmware upgrade process; power interruption corrupts drive firmware and renders unit inoperable
5. STO safety circuit wiring must follow official schematic drawings; bypassing STO function invalidates SIL2 safety certification
6. Clean heat sink fin dust accumulation every 3 months in dusty production environments to prevent automatic overtemperature protection trigger