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- Allen Bradley
- SK-R9-PINT2-CF7A
- PowerFlex 750 Power Supply Kit
- USA
- 200 x 30 x 100 mm
- 0.4 kg
- Xiamen, China
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Product Overview
The SK-R9-PINT2-CF7A is a Power Interface Kit used in the Allen-Bradley PowerFlex 750-Series AC Drives, specifically designed for Frame 7, 400V-class systems (up to ~160 kW).
It functions as part of the internal power architecture of the drive, enabling proper connection and distribution between the rectifier, DC bus, and inverter power sections. It is a critical power-handling interface component, not a control or communication module.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Allen-Bradley (Rockwell Automation) |
| Model | SK-R9-PINT2-CF7A |
| Product Type | Power Interface / Power Supply Kit |
| System Compatibility | PowerFlex 750-Series AC Drives |
| Frame Size | Frame 7 |
| Voltage Class | 400 V systems |
| Power Rating Context | Up to ~160 kW class |
| Function | Internal power distribution interface |
| Electrical Role | DC bus and power module connection |
| Mechanical Role | Structural and alignment support for power stack |
| Installation Type | Internal drive assembly kit |
| Weight | ~1.4 kg (typical catalog variation) |
| Dimensions | 200 × 30 × 100 mm |
Function and Working Principle
The SK-R9-PINT2-CF7A ensures stable internal power transfer and modular drive operation.
Main Functions
- Connects internal rectifier, DC bus, and inverter modules
- Provides high-current power continuity inside Frame 7 drives
- Maintains structural alignment of power stack components
- Supports safe distribution of DC link energy
- Reduces risk of connection overheating or arc faults
System Power Flow
AC Input → Rectifier → DC Bus → Power Interface Kit (SK-R9-PINT2-CF7A) → Inverter → Motor Output
This ensures stable internal energy transfer within the drive.
Role in Industrial Control Systems
The SK-R9-PINT2-CF7A functions as:
- A core internal power interface for PowerFlex 750 drives
- A structural connector for modular power assemblies
- A high-current DC bus interconnect element
- A support component for drive power integrity
It does not perform logic control or communication functions.
Industrial Applications
This component is used inside PowerFlex 750 systems for:
- Conveyor drive systems
- Industrial pumping stations
- HVAC fan and chiller systems
- Compressors
- Process automation machinery
- Heavy-duty motor control systems
It is always part of a complete drive assembly, not a standalone field device.
Installation and System Integration
- Installed inside PowerFlex 750 Frame 7 drive enclosure
- Connects internal power modules and DC bus structure
- Requires correct 400V Frame 7 configuration
- Installed during assembly or service replacement
- No external wiring required
- Must be handled with proper high-voltage safety procedures
Compatible System Components
- PowerFlex 750-Series AC Drives
- Frame 7 power modules
- DC bus capacitor assemblies
- Rectifier and inverter stacks
- SK-R9-PINT interface family components
- Control and protection boards
Recommended Alternative Models
| Model | Product Type | Key Feature |
|---|---|---|
| SK-R9-PINT2-CF7A | Power Interface Kit | Standard 400V Frame 7 version |
| SK-R9-PINT2-CF7B | Higher power variant | Increased kW rating |
| SK-R9-PINT2-DF7A | Alternate configuration | Different frame tuning |
| Complete power stack kit | Full assembly | Integrated replacement solution |
Key Advantages
- Ensures reliable internal high-power distribution
- Maintains modular drive structural integrity
- Reduces electrical connection failure risk
- Supports stable operation of Frame 7 PowerFlex 750 drives
- Improves long-term reliability of power stack system
Technical FAQs
Q1: What is the main function of SK-R9-PINT2-CF7A?
It provides internal power interface between key power modules in a PowerFlex 750 Frame 7 drive.
Q2: Is it a control board?
No, it is strictly a power distribution interface component.
Q3: What voltage system is it used for?
It is used in 400V-class PowerFlex 750 Frame 7 drives.
Q4: What happens if it fails?
The drive may lose internal power continuity and fail to operate correctly.
Conclusion
The Allen-Bradley SK-R9-PINT2-CF7A Power Interface Kit is a critical internal hardware component in PowerFlex 750 Frame 7 (400V) drives. It ensures stable high-power electrical distribution between internal modules, supporting reliable motor control in demanding industrial applications.