Description
System Architecture & Operational Principle
The Kollmorgen BJRL-20012-110001 is a high-performance servo cable designed to bridge the gap between servo drives and motors in industrial automation systems. It serves as the critical signal and power transmission link in a servo system, ensuring that precise control commands from the drive are delivered to the motor while feeding back real-time motor status (e.g., position, speed) to the drive.
Core Functional Blocks
-
Power Conductors: High-purity copper conductors carry high-current power from the servo drive to the motor, ensuring minimal power loss and heat generation.
-
Data Transmission: Twisted-pair conductors (shielded) transmit low-voltage control signals (e.g., PWM, encoder feedback) between the drive and motor, maintaining signal integrity.
-
Shielding: A double-shielded design (aluminum foil + braided copper) minimizes electromagnetic interference (EMI) from nearby devices (e.g., VFDs, motors), ensuring stable signal transmission.
-
Connectors: Specifically designed connectors (compatible with Kollmorgen servo drives/motors) provide a secure, low-resistance connection, preventing signal degradation.
Operational Workflow
-
Power Delivery: The servo drive sends high-current power through the cable to the motor, enabling torque generation.
-
Control Signal Transmission: The drive sends low-voltage control signals (e.g., desired speed/torque) through the twisted-pair conductors to the motor.
-
Feedback Signal Transmission: The motor’s encoder sends real-time position/speed feedback through the cable to the drive, which adjusts the control signals to maintain precise motion.
-
EMI Mitigation: The double-shielded design blocks external EMI, ensuring that control signals remain accurate even in harsh industrial environments.
Kollmorgen BJRL-20012-110001
Core Technical Specifications
|
Parameter
|
Specification
|
|---|---|
|
Cable Type
|
Servo cable (power + data)
|
|
Length
|
12 meters (standard)
|
|
Rated Voltage
|
600V
|
|
Conductor Material
|
High-purity copper (low resistance, superior conductivity)
|
|
Insulation Material
|
Durable, heat-resistant PVC (protects conductors from abrasion/heat)
|
|
Shielding
|
Double-shielded (aluminum foil + braided copper) for EMI immunity
|
|
Operating Temperature
|
-40°C to +80°C (ambient)
|
|
Flexing Capability
|
Withstands up to 10 million flex cycles (suitable for robotic arms/conveyors)
|
|
Connector Type
|
Kollmorgen-specific (compatible with AKD series drives/ AKM series motors)
|
|
Weight
|
~2 kg (4.4 lbs)
|
Customer Value & Operational Benefits
1. High Reliability for Continuous Operations
The BJRL-20012-110001’s double-shielded design and high-purity copper conductors ensure stable power and signal transmission in harsh industrial environments (e.g., factories with high EMI). This reliability reduces downtime caused by signal loss or power fluctuations, which is critical for 24/7 operations like bottling lines or assembly lines.
2. Excellent Flexibility for Dynamic Applications
With a flex life of up to 10 million cycles, the cable is ideal for dynamic applications like robotic arms or automated guided vehicles (AGVs), where repeated bending and twisting are common. This flexibility prevents cable fatigue and breakage, reducing maintenance costs.
3. Easy Integration with Kollmorgen Systems
The cable’s connectors are specifically designed for Kollmorgen servo drives (e.g., AKD) and motors (e.g., AKM), ensuring plug-and-play compatibility. This eliminates the need for custom adapters or modifications, saving time during installation and commissioning.
4. Cost Savings Through Reduced Downtime
The cable’s reliability and flexibility lead to fewer replacements and less maintenance, reducing operational costs. For example, a bottling line using this cable can avoid downtime caused by cable failures, resulting in higher production efficiency.
smart
Field Engineer’s Notes (From the Trenches)
When installing the BJRL-20012-110001, always use strain relief (e.g., cable clamps) to prevent stress on the connectors—this is the most common cause of cable failure. I once saw a technician pull the cable directly from the motor, which broke the internal conductors after 3 months.Check the shielding—if the outer braid is damaged, replace the cable immediately. EMI can corrupt control signals, leading to position errors in robotic arms. Use a multimeter to test the shield continuity (should be <1 ohm).Avoid sharp bends—bending the cable beyond its minimum bend radius (typically 10x the cable diameter) can damage the internal conductors. Use cable guides or conduits to route the cable along straight paths.
Real-World Applications
1. Industrial Robotics: Robotic Welding Arms
A automotive manufacturer uses the BJRL-20012-110001 to connect the servo drive to the motor of a robotic welding arm. The cable’s flexibility allows the arm to move freely, while its shielding prevents EMI from the welding equipment from disrupting the control signals. This ensures precise welding positions, reducing defect rates by 20%.
2. Factory Automation: Conveyor Belt Systems
A food packaging company uses the cable to connect servo drives to conveyor belt motors. The cable’s 12-meter length allows it to span long distances between the drive and motor, while its durability withstands the constant vibration of the conveyor system. This reduces downtime due to cable failures by 30%.
3. Precision Machining: CNC Milling Machines
A machine shop uses the cable to connect the servo drive to the spindle motor of a CNC milling machine. The cable’s high-purity copper conductors ensure minimal power loss, while its shielding prevents EMI from the machine’s other components from affecting the spindle’s speed control. This results in consistent part quality (±0.05 mm tolerance).
