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- Allen Bradley
- SK-R1-BP1
- PowerFlex 750 Backplane Interface Kit
- USA
- 100 x 20 x 80 mm
- 0.07 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Allen-Bradley SK-R1-BP1 is a Backplane Interface Kit used in the PowerFlex 750-Series AC Drive system from Rockwell Automation. It is a hardware interface module that connects the drive’s internal control structure with its backplane communication architecture, ensuring proper operation of modular option cards and drive components.
This kit is required for specific frame sizes and configurations in the PowerFlex 750 family (such as PowerFlex 753 / 755 drives), where internal module communication depends on a structured backplane interface.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Rockwell Automation (Allen-Bradley) |
| Model | SK-R1-BP1 |
| Product Type | Backplane Interface Kit |
| System Compatibility | PowerFlex 750-Series AC Drives |
| Supported Drives | PowerFlex 753 / 755 (varies by frame size) |
| Function | Internal drive backplane communication interface |
| Installation Type | Internal drive hardware kit |
| Electrical Role | Signal and communication interface (non-I/O control module) |
| Mechanical Role | Connects and stabilizes internal control pod/backplane system |
| Application Voltage | 400–690 V drive systems (system-level) |
| Dimensions | 100 × 20 × 80 mm |
| Weight | 0.07 kg |
Function and Working Principle
The SK-R1-BP1 does not perform control logic or power conversion. Instead, it serves as a critical internal communication interface inside the drive assembly.
Its main functions include:
- Providing backplane connectivity between drive control boards and option modules
- Ensuring proper communication between internal drive components
- Supporting stable operation of PowerFlex 750-series modular architecture
- Maintaining signal integrity for internal data exchange
- Enabling correct operation of installed option cards (communication, safety, I/O modules)
System Role
Inside the PowerFlex 750 drive:
Control Board ↔ Backplane Interface (SK-R1-BP1) ↔ Option Modules (Ethernet/IP, Safety, Encoder, etc.)
This structure allows modular expansion and flexible configuration.
Role in Industrial Control Systems
The SK-R1-BP1 functions as:
- A critical internal drive communication bridge
- A support component for PowerFlex 750 modular expansion
- A signal integrity interface for drive option modules
- A structural part of the drive’s internal architecture
Without this interface, certain PowerFlex 750 configurations may not properly recognize or communicate with installed modules.
Industrial Applications
This component is used in:
- Industrial motor control systems
- Conveyor drive systems
- Pumping and fan control systems
- Manufacturing automation lines
- Process control plants
- High-power variable frequency drive (VFD) installations
It is always used as part of a complete PowerFlex 750 drive system, not as a standalone field device.
Installation and System Integration
- Installed inside PowerFlex 750 drive housing
- Mounted as part of drive internal control pod assembly
- Connected to control board and option module backplane
- Requires correct frame-size matching (per drive configuration)
- Typically installed during assembly or replacement service
- No field wiring required
Compatible System Components
- Allen-Bradley PowerFlex 750-Series drives
- PowerFlex 753 AC drives
- PowerFlex 755 AC drives
- Drive option modules (communication, safety, feedback cards)
- HIM (Human Interface Module) assemblies
- Control pod internal boards
Recommended Alternative Models
| Model | Product Type | Key Feature | Application |
|---|---|---|---|
| SK-R1-BP1 | Backplane Interface Kit | Standard PF750 interface | 750-series drives |
| SK-R1-CR1 | Control pod interface component | Related internal kit | Drive servicing |
| SK-R1-PC1 | Power interface cable kit | Internal connectivity | Drive maintenance |
| Complete Control Pod Kit | Full assembly | Integrated replacement | Drive rebuild/repair |
Key Advantages
- Ensures reliable internal communication in PowerFlex 750 drives
- Supports modular expansion of drive functionality
- Maintains signal integrity across backplane architecture
- Essential for correct operation of option cards
- Compact and purpose-built for industrial drive systems
- Enables flexible drive configuration and upgrades
Technical FAQs
Q1: What is the main function of SK-R1-BP1?
It provides internal backplane communication between the PowerFlex 750 drive control board and option modules.
Q2: Is it a field I/O module?
No, it is an internal drive interface component, not a field device.
Q3: Which drives use this kit?
It is used in PowerFlex 750-series drives, including certain 753 and 755 configurations.
Q4: Can the drive operate without it?
No, if the drive architecture requires it, removing it will cause communication or module recognition failures.
Conclusion
The Allen-Bradley SK-R1-BP1 PowerFlex 750 Backplane Interface Kit is an essential internal hardware component that enables communication between control electronics and option modules within PowerFlex 750-series drives. While small and passive in appearance, it plays a critical role in maintaining the modular functionality and reliability of advanced industrial VFD systems.