Technical Specifications

• Input Power Supply: 24–90 VDC unregulated DC bus input
• Continuous Output Current: 10 Arms DC
• Peak Output Current: 20 Arms DC, 1-second maximum duty cycle
• Control Loop Refresh Rate:
  • Current Loop: 4 μs, maximum bandwidth 3.2 kHz
  • Speed Loop: 120 μs, maximum bandwidth 1.1 kHz
  • Position Loop: 250 μs, maximum bandwidth 0.6 kHz
• Feedback Signal Supported: A/B/Z quadrature incremental encoder (5 V line driver output), tachometer analog signal
• Built-in I/O Resources: 8 isolated digital inputs, 4 digital outputs, 1 analog input 0–10 V, 1 analog output 0–10 V
• Communication Interfaces: RS232 service port, CANopen industrial bus standard
• Safety Function Hardware: Hardware overcurrent lockout, overvoltage protection, thermal shutdown, short-circuit phase protection
• Physical Dimension: 108 mm (W) × 155 mm (H) × 42 mm (D)
• Net Weight: 1.45 kg
• Protection Rating: IP00 open frame (must be fully installed inside sealed electrical cabinet)
• Operating Ambient Temperature: 0 °C to +50 °C; 2% power derate per °C above 40 °C
• Storage Temperature Range: -40 °C to +85 °C
• Certifications: UL 61800, CE, RoHS 2

Functional Features

1. Full digital three-loop closed-loop control algorithm without analog circuit drift, stable long-term positioning precision
2. One-click automatic inertia identification and gain auto-tuning, compatible with 500:1 load inertia matching range
3. CANopen bus multi-axis synchronous motion control, supporting electronic gearing and cam curve interpolation
4. RS232 serial port connects to Kollmorgen WorkBench software for parameter configuration, fault log reading, firmware upgrade
5. Isolated 24 V digital I/O with optical coupling eliminates ground loop interference from field sensors
6. Built-in dynamic braking circuit for rapid motor deceleration; compatible with external braking resistor expansion for high-inertia loads
7. Real-time fault storage module records 100 historical alarm records with timestamp for equipment failure diagnosis

Performance Highlights

1. Ultra-low speed speed ripple control algorithm ensures stable rotation speed below 1 rpm without jitter for precision micro-positioning
2. Compact open-frame structure minimizes cabinet space occupation for multi-axis miniature automation systems
3. Full digital current limiting circuit prevents permanent motor armature burnout under stall overload conditions
4. 85,000-hour MTBF under rated operating environment and load conditions
5. Compatible with all Kollmorgen B-series brushed DC servo motors without encoder hardware modification

Material Composition

• Core Circuit Board: FR4 flame-retardant double-sided PCB with lead-free tin surface finish
• Power Switching Component: MOSFET power transistor array bonded on aluminum alloy heat sink
• Heat Dissipation Structure: Extruded aluminum fin heat sink without protective outer shell (WO open-frame design)
• Terminal Connectors: Gold-plated copper alloy screw terminals for power, signal and communication wiring
• Isolation Components: 2500 V optical couplers separating power circuit and control signal circuit
• Fixing Hardware: Cold-rolled steel mounting brackets with anti-rust black powder coating

Structural Characteristics

1. Open exposed circuit layout without plastic outer housing; all power semiconductors directly exposed for passive heat dissipation
2. Standard vertical cabinet mounting hole layout, uniform hole pitch matching DIN cabinet backplane installation standards
3. Independent partition layout: DC power terminal zone, motor armature output zone, encoder feedback port, CAN bus communication port, digital I/O terminal zone
4. Rear side integrated large-area aluminum heat sink for heat radiation of high-power MOSFET components
5. Front panel embedded LED indicator lights for power status, bus communication, drive enable, fault alarm, output current overload

Working Principle

1. External 24–90 VDC power supply inputs direct current to drive internal power conversion circuit to supply DSP control chip and MOSFET power stage
2. Upper motion controller sends torque/speed/position command via CANopen bus or analog voltage input
3. Drive receives incremental encoder quadrature pulse signal from B-series servo motor to calculate real-time rotor speed and position deviation value
4. DSP controller executes PID three-loop operation to generate PWM modulation signal, driving MOSFET bridge circuit to output adjustable DC current to motor armature
5. Internal sampling circuit monitors DC bus voltage, output current, heat sink temperature in real time; automatically triggers protection lockout upon overvoltage, overcurrent, overtemperature and short-circuit faults
6. Dynamic braking circuit consumes regenerative energy generated by motor deceleration through internal power resistance to suppress DC bus voltage surge

Advantage Highlights

1. Open-frame WO version reduces product cost compared to fully enclosed housing models for cabinet-integrated equipment manufacturers
2. Unified WorkBench configuration software shared with AKD series drives, reducing engineer learning and training cost
3. Wide 24–90 VDC wide voltage input range adapts to battery-powered mobile equipment and industrial low-voltage power supply systems
4. Hardware current limit protection avoids frequent motor carbon brush burnout under long-term stall working conditions
5. CANopen bus interface supports distributed multi-axis control without expensive dedicated motion control hardware

Applicable Industries

Installation Requirements

1. Mandatory full installation inside sealed dust-proof electrical cabinet; open IP00 frame cannot be exposed to workshop air, dust or liquid splash
2. Maintain minimum ventilation clearance: 40 mm top gap, 30 mm bottom gap, 15 mm left/right side gap between adjacent drives
3. DC input power cable cross-section ≥ 2.5 mm² shielded copper cable; cable shield single-point connected to cabinet grounding busbar
4. Motor encoder feedback wire must adopt shielded twisted pair cable to avoid PWM power interference causing signal pulse loss
5. Vertical mounting orientation only; horizontal or upside-down installation prohibited to block heat sink natural convection airflow

Operation & Maintenance Precautions

1. Disconnect DC input power and wait 5 minutes for internal bus capacitor complete discharge before touching exposed PCB circuit components
2. Regularly clean aluminum heat sink fins every 2 months to remove accumulated dust blocking heat dissipation, preventing overtemperature faults
3. All wiring terminals must maintain tightening torque of 0.9 N·m; loose terminals generate high contact temperature and burn PCB pads
4. Firmware upgrade only through official Kollmorgen WorkBench software; third-party firmware invalidates product warranty
5. Inductive loads connected to digital output terminals must be fitted with freewheeling flyback diodes to eliminate voltage spike damage to drive internal circuit