The Danaher-Motion SERVOSTAR 343 is a compact, fully digital servo amplifier designed to control high-performance brushless servomotors. It belongs to the SERVOSTAR 300 series, known for its space-saving design and versatile communication options in automated machinery.
Product Parameters (Datasheet)
- Model Number: SERVOSTAR 343 (S343)
- Input Voltage: 3-Phase 208V to 480V AC, 50/60Hz
- Rated Output Current: 3 Amps (Continuous)
- Peak Output Current: 9 Amps (for approx. 2 seconds)
- Power Capacity: 2.5 kVA
- Auxiliary Supply: 24V DC for logic and control circuits
- Feedback Support: Resolver (standard), ComCoder, incremental encoder, or Sincos (standard/EnDat/Hiperface)
- Interface: Analog ±10V, Pulse/Direction, or Fieldbus (CANopen, Profibus, EtherCAT)
- Safety: Integrated “Safe Torque Off” (STO) capability (model dependent)
- Protection Rating: IP20
Country of Origin
This drive was engineered and manufactured in Germany by Danaher Motion (now part of the Kollmorgen brand).
Application Fields
The SERVOSTAR 343 is ideally suited for applications requiring high precision in a small footprint:
- Electronic Assembly: Pick-and-place machines and component insertion.
- Medical Technology: Laboratory automation and precision dosing systems.
- Textile Industry: Yarn guide control and small-scale winding applications.
- Packaging: Labeling machines and small-format form-fill-seal equipment.
- Robotics: Control for auxiliary axes and small industrial robotic arms.
Product Usage Instructions
- Mounting: Install the drive vertically in a control cabinet. Ensure at least 40mm of clearance above and below the unit to allow for natural convection or fan-assisted cooling.
- Power Wiring: Connect the 3-phase AC supply to terminals L1, L2, and L3. Connect the motor leads to U, V, and W. Ensure the PE (earth) connection is secure.
- DC Bus: If multiple drives are used, the DC buses can be linked to allow for energy sharing during braking, though external fuses are required for this setup.
- Commissioning: Use the DRIVE.EXE software or the front-panel display/keypad to set motor parameters, current limits, and controller gains.
- Feedback Connection: Connect the resolver or encoder to the Sub-D X2 connector. Ensure shielded cabling is used to prevent signal interference.
Product Technical Description
The SERVOSTAR 343 features a high-speed RISC processor for real-time control loops (current, speed, and position). Technically, it utilizes a space-vector PWM (Pulse Width Modulation) scheme to provide smooth torque delivery with minimal ripple. The drive includes an internal braking resistor to dissipate regenerative energy during deceleration, though an external resistor can be added via the terminal block for high-inertia loads. Its modular firmware allows it to be configured as a simple analog velocity controller or a sophisticated position-controlled slave on a digital Fieldbus.
Q&A (Common Questions)
Q: Can I run this drive on single-phase power? A: The 343 is designed for 3-phase input. While some SERVOSTAR models allow single-phase operation with derating, it is recommended to use 3-phase to maintain the rated 2.5kVA output.
Q: What is the significance of the “3A” rating? A: This is the continuous RMS current the drive can provide to the motor. For high-torque starts, the drive can provide a “Peak” of 9A for a short duration.
Q: Does the drive require a separate 24V power supply? A: Yes, a separate 24V DC supply is required to power the internal logic and keep the position data active when the main 480V power is disconnected.
Q: How do I clear a “Brake” or “Overvoltage” fault? A: This usually indicates the DC bus voltage is too high. Check if the internal braking resistor is enabled or if the deceleration ramp is too steep for the load inertia.
Similar Model Recommendations
- Danaher-Motion SERVOSTAR 303 (Lower voltage 230V variant)
- Danaher-Motion SERVOSTAR 346 (6A version in the same frame size)
- Kollmorgen AKD-P00307 (Modern digital successor)
- Danaher-Motion SERVOSTAR 603 (Higher feature set/larger frame size)
- Danaher-Motion SERVOSTAR 310 (10A version for larger motors)
For more information on the Danaher-Motion SERVOSTAR 343 and other motion control solutions, please visit our technical catalog.
