Technical Specifications

• Input Power Rating: 3-phase AC 208–480 VAC, 47–63 Hz
• Continuous Output Current: 24 Arms RMS
• Peak Output Current: 48 Arms RMS (1-second maximum duration)
• Nominal Continuous Output Power: 8000 W under 400 VAC 3-phase supply
• DC Bus Operating Range: 280–680 VDC
• Control Loop Refresh Cycles:
  • Current Loop: 0.68 μs, maximum bandwidth 5.0 kHz
  • Speed Loop: 62.5 μs, maximum bandwidth 1.6 kHz
  • Position Loop: 125 μs, maximum bandwidth 0.8 kHz
• Built-in I/O Hardware: 13 configurable digital inputs, 4 digital outputs, 1 analog input (0–10 V), 1 analog output (0–10 V)
• Feedback Protocols Natively Supported: SFD, EnDat 2.2, BiSS C, HIPERFACE DSL, Sin/Cos 1Vpp, Incremental Encoder, Resolver
• Industrial Bus Interface: EtherCAT (NBS suffix standard), CANopen, Modbus TCP
• Safety Function: STO Safe Torque Off, PL d / SIL 2 certified, response time ≤1 ms
• Physical Dimension: 130 mm (W) × 260 mm (H) × 70 mm (D)
• Weight: 3.8 kg
• Protection Rating: IP20 (cabinet internal installation only)
• Operating Ambient Temperature: 0 °C to +50 °C (derate 2% per °C above 40 °C)
• Storage Temperature: -40 °C to +85 °C
• Certifications: UL 61800, CE, RoHS 2, TÜV SIL2

Functional Features

1. Full three-loop closed-loop control: torque, velocity, position dual-mode switching without hardware modification
2. One-click automatic load inertia identification and servo gain auto-tuning, supporting 1000:1 load inertia matching range
3. SD card slot for offline parameter backup, firmware upgrade, and fault log storage without host PC connection
4. Isolated digital I/O with 24 VDC optical isolation to eliminate industrial electromagnetic interference
5. Built-in regenerative braking circuit (20 W continuous dissipation); compatible with external high-power braking resistor expansion
6. Embedded web server for remote real-time status monitoring, fault diagnosis, and parameter modification
7. Multi-axis synchronous motion function via EtherCAT bus, supporting electronic cam, electronic gear, linear interpolation, circular interpolation
8. Real-time fault recording system storing 100 groups of historical alarm data with timestamp

Performance Highlights

1. Industry-leading ultra-fast current loop refresh rate for ultra-low speed ripple and stable low-speed operation
2. SFD one-cable feedback technology reduces wiring quantity by 50%, eliminates separate encoder cable layout
3. High power density compact chassis reduces electrical cabinet space occupation by 35% compared to equivalent competing drives
4. Ultra-low electromagnetic emission design, built-in EMC filter complying with EN 61000-6-2 industrial immunity standard
5. 100,000-hour MTBF under rated operating conditions

Material Composition

• Main Chassis: Cold-rolled steel sheet with matte black anti-corrosion electrostatic coating
• Internal PCB Substrate: High-temperature FR4 flame-retardant circuit board with tin-lead-free surface finish
• Power Semiconductor Module: Silicon IGBT power module with aluminum alloy heat sink
• Terminal Connectors: Copper alloy with gold plating for oxidation resistance
• Cooling Structure: Aluminum extruded fin heat sink + silent built-in axial flow cooling fan

Structural Characteristics

1. Vertical rack mounting standard design, uniform hole pitch compatible with standard DIN rail cabinet layout
2. Independent compartment separation for power circuit, control signal circuit, and communication circuit to suppress crosstalk interference
3. Front panel reserved X10 feedback port, X7/X8 I/O port, X3 power port, X11 service debugging port, SD card slot, EtherCAT communication port
4. Rear panel integrated PE protective earth terminal with large contact area for reliable grounding
5. Modular expansion slot for external I/O extension modules and bus expansion cards

Working Principle

1. AC three-phase mains input passes EMC filter and rectifier circuit to convert alternating current into stable DC bus voltage
2. DSP main controller receives position command from upper PLC/motion controller via EtherCAT bus
3. Real-time sampling of motor rotor position signal from feedback encoder to calculate actual velocity and position deviation
4. Three-loop PID algorithm computes target output current, driving IGBT power module to output three-phase sine wave current to servo motor stator windings
5. Built-in current, voltage, temperature sampling circuit monitors operating status in real time; triggers protection lockout upon overcurrent, overvoltage, overtemperature, short-circuit faults
6. STO safety circuit cuts off IGBT drive signal instantly upon safety trigger to eliminate motor torque output

Advantage Highlights

1. Single hardware platform supports torque, speed, position three control modes without separate product models
2. Unified Kollmorgen WorkBench graphical configuration software for all AKD series drives, reducing engineer learning cost
3. Global standard certification allows direct deployment in North America, EU, Asia industrial equipment without additional safety modification
4. Plug-and-play matching with all AKM, AKM2G, KBM series servo motors, no manual encoder parameter configuration
5. Long-term stable supply chain with 10-year spare part availability commitment from manufacturer

Applicable Industries

Installation Requirements

1. Install inside sealed electrical control cabinet only; external dust/water splash protection required for cabinet enclosure
2. Maintain minimum clearance: 50 mm top ventilation gap, 30 mm bottom ventilation gap, 20 mm left/right side gap between adjacent drives
3. Power cable must use shielded three-phase cable with shield layer 360° full contact with cabinet grounding bar
4. Motor feedback cable must adopt Kollmorgen certified SFD shielded single-cable assembly
5. PE protective earth terminal must connect to cabinet dedicated grounding busbar with copper conductor cross-section ≥ 4 mm²
6. Vertical mounting orientation mandatory; horizontal/upside-down installation prohibited to avoid heat sink airflow blockage

Operation & Maintenance Precautions

1. Cut off all AC input power and wait 10 minutes for DC bus capacitor full discharge before disassembling wiring or opening chassis cover
2. Ambient relative humidity must remain between 5%–85% non-condensing; condensation environment operation forbidden
3. Do not connect uncertified third-party encoder cables; mismatched wiring causes permanent feedback circuit damage
4. Regularly clean cooling fan and heat sink fins every 3 months to prevent dust accumulation leading to overtemperature alarm
5. Firmware upgrade only via official Kollmorgen WorkBench software; third-party firmware packages void product warranty
6. External braking resistor resistance value must strictly follow datasheet rated parameter; mismatched resistance causes drive power module burnout