Description
System Architecture & Operational Principle
The Kollmorgen RMB-10V2-SYNQNET is a high-performance servo drive designed for precision motion control in industrial automation. It belongs to Kollmorgen’s SynqNet-enabled servo drive family, which is widely used in applications requiring high torque, high speed, and precise positioning.
Core Functional Blocks
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Power Conversion Stage: Converts 3-phase AC input (43V AC) to DC bus voltage using high-efficiency rectifiers and filters. The 4-quadrant output stage (V-MOS transistors) enables bidirectional power flow, allowing the drive to both supply and absorb power (e.g., for regenerative braking).
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Control Circuitry: Employs a high-speed digital signal processor (DSP) to execute advanced control algorithms (e.g., Field-Oriented Control (FOC), PID tuning) for precise speed, torque, and position regulation.
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Communication Interface: Supports SynqNet (a high-performance industrial fieldbus) for real-time communication with PLCs, HMIs, and other devices. This enables synchronized motion control and data exchange in multi-axis systems.
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Protection Mechanisms: Includes overcurrent, overvoltage, short-circuit, thermal overload, and feedback loss protection. The drive also features a system ready (BTB) relay with a floating contact for status monitoring.
Operational Workflow
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Command Input: Receives motion commands (e.g., target position/speed) from a PLC or HMI via the SynqNet interface.
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Algorithm Execution: The DSP calculates optimal voltage/current outputs using FOC, adjusting for load variations and dynamic conditions (e.g., sudden stops).
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Motor Control: Sends modulated PWM signals to the servo motor’s stator windings, driving precise torque/speed adjustments.
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Feedback Loop: Processes real-time data from motor encoders (e.g., Kollmorgen SFD) to correct deviations (closed-loop control), ensuring micrometer-level positioning.
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Status Monitoring: Transmits operational data (e.g., temperature, current draw, fault codes) to the PLC/HMI for diagnostics.
RMB-10V2-SYNQNET
Core Technical Specifications
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Parameter
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Specification
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Power Supply
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3-phase 43V AC (±10%); 24V DC auxiliary (optional)
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Output Stage
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4-quadrant (V-MOS transistors)
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Control Modes
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Speed/Torque/Position (via SynqNet)
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Communication
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SynqNet (real-time industrial fieldbus)
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Protection Level
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IP00 (for installation in switchgear cabinets)
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Operating Temperature
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0°C to +45°C (rated); +45°C to +55°C (derates 2.5%/°C)
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Humidity
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5–85% RH (no condensation)
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Altitude
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Up to 1000m (no derating); 1000–2500m (derates 1.5%/100m)
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Dimensions
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199mm × 100mm × 12TE (Eurocard format)
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Weight
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~1.2 kg (2.6 lbs)
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Customer Value & Operational Benefits
1. High Precision for Critical Applications
The RMB-10V2-SYNQNET’s FOC algorithms and high-resolution encoder feedback (e.g., 16-bit) enable ±0.05 mm positioning accuracy, critical for applications like automotive welding (consistent seam placement) or medical device assembly (implant component alignment).
2. Flexible Integration with SynqNet Systems
SynqNet support allows seamless integration with Kollmorgen’s SynqNet-enabled controllers (e.g., QMP-SynqNet) and third-party devices. This flexibility reduces the need for costly system overhauls—for instance, a food packaging line can upgrade its servo drives without replacing the entire PLC system.
3. Regenerative Braking for Energy Efficiency
The 4-quadrant output stage enables regenerative braking, where the drive absorbs energy from the motor during deceleration (e.g., crane hoisting). This energy can be fed back into the power supply, reducing energy consumption by 15–25% compared to traditional drives.
4. Robust Protection for Reliability
The drive’s overcurrent, overvoltage, and thermal protection mechanisms safeguard against component damage, reducing downtime. For example, a bottling line using the RMB-10V2-SYNQNET can avoid downtime caused by motor faults, resulting in higher production efficiency.
RMB-10V2-SYNQNET
Field Engineer’s Notes (From the Trenches)
When installing the RMB-10V2-SYNQNET, always verify the 3-phase power supply voltage (43V AC ±10%) with a True-RMS multimeter—low voltage can cause the drive to reset intermittently. I once saw a site use a 40V AC supply without correction, leading to blown capacitors.Route SynqNet cables separately from power cables—parallel runs induce EMI, causing position jitter. Use shielded twisted-pair (STP) cables with 360° grounding.Enable regenerative braking in the drive software for vertical axis applications (e.g., elevators, cranes) to prevent overvoltage faults during descent.Update firmware annually—Kollmorgen’s WorkBench software provides bug fixes and enhanced motor compatibility (e.g., new AKM series motors).
Real-World Applications
1. Industrial Robotics: Automotive Welding Arms
A Tier-1 auto supplier uses the RMB-10V2-SYNQNET to control a 6-axis welding robot. The drive’s SynqNet sync ensures all axes move in unison, achieving ±0.1 mm weld seam accuracy. Energy savings from regenerative braking cut annual electricity costs by $8,000.
2. Machine Tools: CNC Lathe Spindles
A job shop powers a CNC lathe spindle with the drive, leveraging its 24A peak current for rapid acceleration (0–3000 rpm in 0.5 sec). S-curve profiling reduces spindle bearing wear by 30%, extending tool life.
3. Material Handling: Automated Guided Vehicles (AGVs)
An e-commerce warehouse uses the drive in AGV wheel motors. The IP00 rating and wide temp range (0°C to +45°C) suit cold storage areas, while SynqNet communication enables real-time navigation updates.
