Description
Kollmorgen S724-FN2
Technical Specifications
- Product Family: SERVOSTAR S700 Series
- Size Class: S724
- Device Designation: S724-FN2
- Product Category: Digital servo amplifier
- Rated Line Power (S1): 18 kVA
- Rated Line Voltage: 3×208 V (−10%) to 3×480 V (+10%)
- Rated DC Bus Voltage: 290–675 VDC
- Rated Output Current: 24 Arms at 3×208 V / 3×230 V; 24 Arms at 3×400 V; 24 Arms at 3×480 V
- Peak Output Current: 48 Arms
- Safety: Dual-channel STO (Safe Torque Off)
- Onboard Communication: CANopen and EtherCAT
- Expansion Card: F2 controlled fan option installed in Slot 2
- Certifications: CE, UL, TÜV
Functional Features
- Controlled Fan (F2 Option in Slot 2): Fan switches on/off or runs at 50% speed based on heat sink temperature and brake power, reducing average noise emission
- Fan Switching Thresholds: Fan off below 55°C heat sink / 60°C internal / 20 W brake power; fan at 50% around 58°C / 65°C / 30 W; fan fully on above 65°C / 75°C / 45 W
- Slot 3 Availability: Slot 3 remains free for other expansion cards such as PosI/O or PosI/O-Monitor
- Multi-Loop Control: High-speed current, velocity, and position control loops
- Autotuning: Automatic PID parameter and feedforward adjustment
- Cogging Suppression: Minimized motor cogging for smooth operation
- Macro Programming: IEC 61131-3 structured text with 128 KB code memory
- Multi-Feedback Support: Up to three simultaneous feedback systems
- Dual-Channel STO: SIL2/PLd compliant safe torque off
- Dynamic Braking: Integrated braking circuit with standard internal braking resistor
- MMC Storage Card Slot: Parameter and firmware backup
Application Scenarios
- Noise-Sensitive Environments: Laboratories, cleanrooms, medical facilities, and office-adjacent production areas
- Multi-Function Systems: Applications requiring both controlled fan noise reduction and additional expansion cards in Slot 3
- Heavy-Duty Automation: Large-scale conveyor systems, material handling, and high-throughput assembly lines
- Machine Tools: Feed axes, spindle drives, and multi-axis CNC systems
- Industrial Robotics: Robotic arms, gantry systems, and palletizing robots
- Metal Forming: Press feeds, shearing machines, and bending equipment
- Woodworking and Plastics: Router drives, extruder feeds, and injection molding actuators
Performance Parameters
- Drive Type: Digital servo amplifier with IGBT power stage
- Control Modes: Torque, speed, and position control
- Switching Frequency: High-frequency PWM for low acoustic noise
- Protection Features: Overcurrent, overvoltage, undervoltage, overtemperature, phase loss, short circuit, and soft start
- Motor Overload Protection: Solid-state protection at 130% of full load current
- Short Circuit Rating: Suitable for circuits delivering not more than 42 kA rms symmetrical amperes at max 480 VAC
Material Composition
- Durable metal enclosure housing integrated power electronics (IGBT module with floating current measurement), control circuitry, EMC filter, heat dissipation components, and F2 controlled fan option card in Slot 2
Structural Features
- Form Factor: Compact single-channel servo amplifier
- Mounting: Panel mounting inside control cabinets
- Expansion Slots: Slot 1 (empty), Slot 2 (F2 controlled fan card installed), Slot 3 (available for user expansion)
- Connectors: Power input/output terminals, motor connection terminals, feedback connector, STO inputs, and fieldbus interface
- Shield Connections: All shield connections made directly to the amplifier
Working Principle
The S724-FN2 receives three-phase AC power, rectifies it to a DC bus voltage, and drives the connected servo motor through its IGBT power stage. The drive uses closed-loop feedback control for precise torque, speed, and position regulation. The F2 option card in Slot 2 monitors internal temperature, heat sink temperature, and brake resistor power dissipation to dynamically control the cooling fan speed, optimizing the balance between thermal management and acoustic noise.
