Technical & Performance Specifications

• Input Power Specification: Single/Three-phase 120/240 VAC universal mains input, operating voltage range 85–265 VAC, 50/60Hz grid frequency
• Continuous Output Current: 24 Arms RMS
• Peak Overload Output Current: 48 Arms RMS (200% continuous overload capacity)
• Continuous Rated Output Power: 8000 W
• Triple Closed-Loop Refresh Speed: Torque Loop = 0.67 μs, Velocity Loop = 62.5 μs, Position Loop = 125 μs
• Suffix NAA12 Hardware Definition:

  N = Dual-port EtherCAT CoE industrial Ethernet master/slave communication

  A = Integrated SIL2 certified STO Safe Torque Off safety circuit

  A = Standard onboard digital I/O base set

  12 = 12-channel auxiliary expandable digital input/output terminal module

• Supported Feedback Hardware: SFD Smart Feedback, EnDat 2.2, BiSS, Sine/Cos Analog Encoder, Incremental Encoder, HIPERFACE, Resolver
• Physical Dimensions: Height 196 mm, Width 95 mm, Depth 172 mm
• Protection Class: IP20, cabinet internal DIN rail mounting only
• Operating Ambient Temperature: 0°C ~ +40°C full rated power output; 6% power derate per 1000 m altitude above sea level
• Certifications: UL, cURus, CE, IEC 61508 SIL2 machinery safety certification
• Storage Temperature Range: -40°C ~ +85°C

Functional Features

1. Dual RJ45 EtherCAT bus ports support daisy-chain multi-axis synchronization with synchronization precision ≤1 μs for high-speed coordinated motion lines
2. 12-channel extended auxiliary digital I/O module expands external sensor, actuator and safety interlock signal connection capacity
3. Full automatic motor parameter identification and ultra-wide range adaptive load auto-tuning algorithm for high-inertia heavy-load servo motors
4. Complete motion function library including electronic cam, electronic gear ratio, master-slave synchronization, flying shear and multi-axis linear interpolation
5. Comprehensive fault diagnosis system storing 1000 timestamped fault event logs with detailed error classification for rapid on-site troubleshooting
6. Front panel USB debug port for local parameter editing, real-time oscilloscope waveform monitoring and remote EtherCAT firmware upgrade; full compatibility with Kollmorgen WorkBench motion configuration software

Material Composition

• Outer Enclosure: Thickened cold-rolled steel sheet with black electrostatic anti-corrosion coating
• Main Heat Dissipation Module: Large extruded aluminum alloy fin heat sink with integrated high-flow axial cooling fan
• Power Stage Core: Low-voltage silicon IGBT power transistors mounted on insulated ceramic substrates
• Terminal Blocks: Flame-retardant PA66 plastic with large cross-section tin-plated copper conductive terminals for high-current wiring
• Internal Circuit Substrates: FR4 high-temperature flame-retardant PCB boards with surge and short-circuit protection components
• Communication Connectors: Gold-plated dual RJ45 EtherCAT metal contact ports

Structural Characteristics

1. Standard vertical 35 mm DIN rail mounting design for sealed industrial low-voltage control cabinet layout
2. Physical isolation partition layout separating power circuit, low-voltage control signal circuit and EtherCAT communication circuit to eliminate electromagnetic cross-interference
3. Bottom forced air intake channel, top hot air exhaust convection cooling system with integrated cooling fan for sustained full-load heat dissipation
4. Front panel multi-color LED status indicators for power supply, fault alarm, EtherCAT bus communication and axis running state; front accessible USB debug port
5. Rear independent separated terminal blocks for single/three-phase power input, high-current motor power output, encoder feedback and extended I/O wiring to avoid wiring clutter

Working Principle

1. Single/three-phase 120/240VAC mains input passes internal EMC filter and full-wave rectifier to generate stabilized low-voltage DC bus power
2. High-speed DSP digital motion controller executes torque, velocity and position triple closed-loop control algorithms, outputs high-frequency PWM modulation signals to low-voltage high-current IGBT power stage
3. IGBT power module converts DC bus voltage to three-phase high-current sinusoidal AC power to drive high-torque low-voltage AKM and DDL linear servo motors
4. Motor-mounted high-resolution feedback sensor transmits real-time rotor position and velocity digital data back to drive universal feedback interface to form full closed-loop control cycle
5. Dual EtherCAT bus interfaces receive synchronized motion command frames from upper master controller; internal drive processor distributes coordinated motion instructions to cascaded slave servo axes via ModuleBus expansion port

Advantage Highlights

1. 24A continuous / 48A peak high-current output delivers ultra-high dynamic overload capacity for heavy-load rapid acceleration and deceleration motion cycles
2. Universal single/three-phase 85–265 VAC input range adapts to global low-voltage factory power grid standards
3. 12-channel extended auxiliary I/O eliminates external PLC expansion module hardware cost for complex signal interlock applications
4. Dual EtherCAT daisy-chain bus architecture simplifies multi-axis servo wiring and improves synchronization precision
5. Integrated SIL2 STO safety circuit complies with international machinery safety standards without external safety relay hardware
6. High power density compact cabinet layout reduces control cabinet footprint for heavy-duty packaging and metal processing automation lines

Applicable Industries

Installation Requirements

1. Vertical mounting on standard 35 mm DIN rail inside sealed industrial low-voltage control cabinet
2. Mandatory ventilation clearance: 60 mm top exhaust gap, 40 mm bottom intake gap, 25 mm lateral separation gap between adjacent high-current servo drives
3. Cabinet high-temperature resistant forced cooling fan mandatory for continuous full-load operation at ambient temperature above 30°C
4. All high-current motor power cables adopt thick cross-section shielded twisted pair cables with single-point shield grounding at cabinet earth bar
5. Strictly separate wiring channels for high-current power cables and low-voltage encoder/I/O signal cables to block electromagnetic noise induction
6. STO safety circuit wiring must strictly follow official low-voltage safety schematic drawings to maintain SIL2 safety certification validity

Usage Precautions

1. Forbid exposed installation outside sealed control cabinet; conductive dust and humidity ingress creates short-circuit hazards for high-current power stage components
2. Maintain input AC voltage strictly within 85–265 VAC operating range; sustained overvoltage permanently damages internal rectifier and IGBT power modules
3. Execute full-load motor auto-tuning procedure before formal production operation; mismatched motor parameters trigger severe torque oscillation and overcurrent shutdown protection
4. Never disconnect motor high-current power cable while drive remains energized; live disconnection generates large electric arcs that burn power stage terminal pins
5. Install matched single/three-phase EMC filter on input power supply to fully comply with CE EMC electromagnetic compatibility standards
6. Clean heat sink fins and cooling fan dust accumulation every 2 months in heavy-dust production workshops to prevent automatic overtemperature shutdown protection