SKU: NXB-SRV-DC112-006 | Version: 1.0 | Brand: NexBot Robotics
The NexBot Drives DC112-006 is a high-performance brushed DC servo motor designed for reliable and precise motion control in demanding industrial automation environments. This component is engineered to provide dynamic response and accurate positioning, making it an ideal choice for robotic applications requiring agile and repeatable movements. The core of the DC112-006 is its high-energy magnet design, which enables a high torque-to-inertia ratio. This feature allows for rapid acceleration and deceleration, critical for reducing cycle times in pick-and-place, assembly, and material handling tasks. It delivers a continuous rated torque of 1.2 Nm, providing sufficient power for smaller joint actuation and end-of-arm tooling manipulation. The motor's construction emphasizes durability, with a rugged anodized aluminum housing and an IP65 rating, ensuring protection against dust ingress and low-pressure water jets from any direction. Operating on a standard 48VDC power supply, this servo motor integrates seamlessly into common industrial power systems. Its design prioritizes smooth, low-cogging operation across its entire speed range up to a rated speed of 3000 RPM. This results in superior path accuracy and finer control over the robot's movements, which is essential for tasks like dispensing, welding, or inspection. Installation involves mounting the motor to the designated robot joint or fixture and connecting it to a compatible motion control system. Regular inspection of electrical connections is recommended to ensure long-term performance and reliability. The DC112-006 serves as a direct replacement part for specified NexBot robot models, ensuring minimal downtime during maintenance cycles.
The NexBot Drives DC112-006 is a 48VDC brushed servo motor designed for high-performance industrial applications. It features an IP65-rated anodized aluminum housing, integrated feedback, and a PROFINET communication interface for direct network integration with compatible controllers.
The DC112-006 must be operated with a compatible servo drive capable of supplying 48VDC and interpreting its feedback signals. Connect the power, feedback, and PROFINET cables as detailed in the installation guide. Refer to your servo drive's documentation for specific terminal assignments and configuration.
To configure the motor, import the provided GSDML file into your PLC engineering software. Assign a unique device name and IP address to the motor on the PROFINET network. Once configured and downloaded, the motor will be accessible for control and diagnostics.
The DC112-006 is designed to operate continuously at its rated voltage of 48VDC and can provide a continuous torque of 1.2 Nm. Exceeding these parameters for extended periods may cause overheating and reduce the motor's lifespan. Peak torque values can be achieved for short durations during acceleration and deceleration.
Utilize your servo drive's programming software to create motion profiles (e.g., trapezoidal or S-curve) to control the motor's position, velocity, and acceleration. The high torque-to-inertia ratio of the DC112-006 allows for highly dynamic and responsive profiles.
Properly tuning the servo loops (proportional, integral, derivative gains) in the drive is critical for optimal performance. An untuned system may exhibit overshoot, oscillation, or sluggish response. Use the auto-tuning feature of your drive first, then manually adjust if necessary to meet specific application requirements.
The DC112-006 reports its status and any fault conditions over the PROFINET network. Monitor the diagnostic data in your PLC to detect issues such as over-current, over-temperature, or feedback errors. Refer to the GSDML file documentation for a complete list of diagnostic codes.
| Interval | Task | Notes |
|---|---|---|
| Daily | Visually inspect the motor for any signs of physical damage, loose connections, or fluid leaks. | Listen for any changes in operating noise, such as grinding or whining. |
| Weekly | Clean the exterior of the motor housing. Remove any buildup of dust or debris that could impede heat dissipation. | Use a dry or slightly damp cloth. Do not use harsh solvents. |
| Monthly | Check that all mounting bolts and electrical connectors are secure and have not loosened due to vibration. | Power must be locked out before checking electrical connectors. |
| Quarterly | Inspect motor brushes for wear by removing the inspection caps. Check for sparking during operation. | Excessive sparking may indicate worn brushes. Replace brushes if they are worn to the service limit line. |
| Annually | Inspect power and communication cables for signs of wear, abrasion, or cracking. | Replace any damaged cables immediately to prevent electrical hazards or communication loss. |
| As Needed | Check shaft seal integrity, especially in environments with high exposure to dust or liquids. | A compromised seal can lead to internal contamination and bearing failure. |
| Symptom | Possible Cause | Solution |
|---|---|---|
| Motor does not rotate when commanded | No power to motor/drive, incorrect wiring, drive in fault state, or mechanical seizure. | Verify 48VDC power at the drive and motor. Check all wiring against the schematic. Reset drive faults. Disconnect the load to check for a seized bearing or gearbox. |
| Motor overheats | Excessive mechanical load, incorrect drive parameters (e.g., current limit too high), or insufficient cooling. | Verify the application load is within the 1.2 Nm continuous torque rating. Reduce the current limit in the drive. Ensure adequate airflow around the motor. |
| Excessive noise or vibration | Shaft misalignment, worn bearings, loose mounting bolts, or unstable servo tuning. | Re-align the motor and load coupling. Check for shaft play indicating worn bearings. Torque all mounting bolts. Re-tune the servo gains in the drive. |
| Inaccurate or lost positioning | Loose coupling, encoder/feedback cable damage, electrical noise, or mechanical backlash. | Inspect and tighten the shaft coupling. Check the feedback cable for damage and ensure it is securely connected. Verify proper grounding and shielding. Check the mechanical system for backlash. |
| PROFINET communication failure | Incorrect IP address, faulty cable, network switch issue, or incorrect GSDML file. | Verify the motor's IP address and device name are correct and unique. Test the cable with a network tester. Ensure the GSDML file in the project matches the motor's firmware version. |
| Motor jitters or oscillates at standstill | Servo loop gains are too high (instability), electrical noise on the feedback signal, or mechanical resonance. | Lower the proportional (P) and derivative (D) gains in the servo drive. Ensure feedback cable shielding is properly grounded. Add a notch filter in the drive parameters if resonance is the cause. |
| Drive reports an 'Over-Current' fault | Shorted motor winding, sudden mechanical blockage, or acceleration/deceleration rates are too aggressive. | Measure winding resistance with a multimeter (with power off). Check for any obstructions in the mechanical system. Reduce the acceleration/deceleration values in the motion profile. |
| Parameter | Value | Unit |
|---|---|---|
| Weight | 2.1 | kg |
| Material | Anodized Aluminum 6061-T6 | |
| Voltage | 48VDC | |
| IP Rating | IP65 | |
| Country of Origin | KR | |
| Protocol | PROFINET | |
| Dimensions | 185 x 60 x 60 mm | |
| Torque | 1.2 Nm |