KOLLMORGEN SERVOSTAR 403M-P (S403M-PB) — High-Performance AC Servo Amplifier | SERVOSTAR 400 Platform
Engineering Background
The KOLLMORGEN SERVOSTAR 400 series represents one of the most widely deployed servo drive platforms in precision motion control. Engineered for demanding industrial environments, the SERVOSTAR 403M-P (model code S403M-PB) delivers robust closed-loop torque, velocity, and position control for AC brushless servo motors. Its compact form factor and comprehensive I/O architecture make it a preferred choice for machine builders and system integrators across multiple verticals.
Product Positioning
The S403M-PB is a 3 A continuous / 9 A peak output servo amplifier designed for single-axis motion applications requiring high dynamic response and precise positioning. It is fully compatible with KOLLMORGEN AKM, Goldline, and compatible third-party servo motors. Konmask.com supplies verified surplus and refurbished units with full functional testing, making this an ideal cost-effective replacement or spare for existing SERVOSTAR 400 installations.
Complete Technical Specifications
- Model / Part Number: SERVOSTAR 403M-P / S403M-PB
- Manufacturer: KOLLMORGEN (Danaher Motion)
- Drive Series: SERVOSTAR 400
- Continuous Output Current: 3 A RMS
- Peak Output Current: 9 A (for 2 seconds)
- Input Voltage: 115 / 230 VAC, single-phase or three-phase, 50/60 Hz
- DC Bus Voltage: 160 / 320 VDC (nominal)
- Control Modes: Torque, Velocity, Position (via encoder feedback)
- Feedback Interface: Incremental encoder (RS-422), resolver optional
- Communication Interface: RS-232 / RS-485 serial; optional PROFIBUS-DP (PB suffix)
- Analog Command Input: ±10 VDC differential
- Digital I/O: 7 programmable digital inputs, 3 digital outputs
- Enable Input: Hardware enable (STO-compatible logic)
- Switching Frequency (PWM): 8 kHz / 16 kHz selectable
- Operating Temperature: 0 °C to +45 °C (ambient, with adequate ventilation)
- Storage Temperature: −25 °C to +70 °C
- Humidity: 5–85% RH, non-condensing
- Protection Class: IP20
- Dimensions (H × W × D): Approx. 220 × 60 × 170 mm
- Weight: Approx. 1.5 kg
- Certifications: CE, UL (cULus listed)
- Configuration Software: DRIVE.EXE / S-DRIVE (Windows-compatible)
Proven Application Environments
- CNC machining centers and multi-axis milling machines
- Semiconductor wafer handling and pick-and-place systems
- Packaging machinery: form-fill-seal, labeling, and cartoning lines
- Printing and converting equipment requiring precise web tension control
- Robotics and Cartesian gantry systems
- Medical imaging and laboratory automation platforms
- Textile and winding machinery
Engineering Advantages
- PROFIBUS-DP Integration (PB variant): Native fieldbus connectivity enables seamless integration into Siemens, Beckhoff, and other PLC-based architectures without additional gateway hardware.
- Auto-tuning Algorithm: Built-in inertia identification and gain scheduling reduce commissioning time significantly versus manual tuning.
- Compact Single-Axis Footprint: 60 mm wide profile allows high-density panel mounting in space-constrained control cabinets.
- Wide Motor Compatibility: Supports KOLLMORGEN AKM, Goldline, and compatible third-party AC brushless servo motors with standard encoder interfaces.
- Regenerative Braking: Internal regen resistor with external resistor option for high-inertia load deceleration.
- Fault Diagnostics: Comprehensive fault code display and logging via serial interface for rapid troubleshooting.
System Architecture & Signal Flow
The SERVOSTAR 403M-P operates as a fully digital servo amplifier. The control loop hierarchy is: Position Loop → Velocity Loop → Current (Torque) Loop, all executed in the DSP core at high update rates. Command inputs are accepted via ±10 V analog reference or PROFIBUS-DP cyclic data (PB variant). Encoder feedback is processed through the RS-422 differential receiver and fed into the velocity and position estimators. The PWM output stage drives the motor phases via an IGBT bridge, with hardware overcurrent, overvoltage, undervoltage, and overtemperature protection circuits operating independently of firmware.
For multi-axis configurations, the S403M-PB can be coordinated via a master PLC or motion controller over PROFIBUS-DP, with each axis operating as a DP slave node. DC bus sharing between multiple SERVOSTAR 400 units in the same cabinet is supported to optimize regenerative energy recovery.
Sourcing & Quality Verification
- Source: Verified surplus from decommissioned OEM production lines and controlled industrial estates.
- Inspection: Each unit undergoes visual inspection, power-on functional test, and parameter readback verification prior to listing.
- Condition: Surplus / refurbished — fully functional. Cosmetic wear consistent with prior industrial use may be present.
- Warranty: 90-day functional warranty against DOA and latent defects. Contact support@konmask.com for warranty claims.
- Counterfeit Risk: All units sourced from traceable industrial channels. Konmask does not source from unverified grey-market brokers.
Procurement Process
- Step 1 — Confirm Compatibility: Verify your motor nameplate data (voltage, current, encoder type) against the S403M-PB specifications above. Contact our engineering team if uncertain.
- Step 2 — Request Quote / Place Order: Add to cart or contact support@konmask.com with your required quantity and delivery timeline.
- Step 3 — Lead Time: In-stock units ship within 1–3 business days. Express shipping available on request.
- Step 4 — Documentation: Datasheet, wiring diagram, and DRIVE.EXE software link provided with every order upon request.
- Step 5 — After-Sales Support: Our technical team is available for commissioning guidance and parameter configuration assistance.
Technical FAQ
Q: Is the S403M-PB compatible with my existing SERVOSTAR 400 series installation?
A: Yes. The S403M-PB is a direct form-fit-function replacement for other SERVOSTAR 403 variants, provided the motor current rating is within the 3 A continuous / 9 A peak envelope.
Q: Can I use this drive with a non-KOLLMORGEN motor?
A: Yes, with caveats. The drive supports standard incremental encoder feedback (RS-422, 5 V). Motor parameters (pole count, back-EMF constant, resistance, inductance) must be entered manually via DRIVE.EXE. Consult our team for compatibility assessment.
Q: What is the PROFIBUS-DP node address range?
A: Node addresses 1–125 are configurable via DIP switches on the drive front panel.
Q: Does this unit include the original KOLLMORGEN configuration cable?
A: A standard RS-232 null-modem cable (DB9 female–female) is required. This is not included but is widely available. Pinout documentation provided on request.
Q: What happens if the unit arrives non-functional?
A: Contact support@konmask.com within 7 days of receipt. We will arrange replacement or full refund under our DOA policy.
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