Description
The Allen-Bradley 2093-ASP06 is a shunt/brake module from Rockwell Automation’s Kinetix 2000 multi-axis servo drive system. It functions as a dedicated energy dissipation unit, protecting the drive system from overvoltage faults by safely converting regenerative braking energy from servo motors into heat. Note: This product was officially discontinued by Rockwell Automation as of December 31, 2022, and is now primarily available on the surplus/aftermarket for legacy system maintenance and repair.
Application Scenarios
In a high-speed packaging line utilizing a Kinetix 2000 system, multiple servo axes frequently accelerate and decelerate large inertial loads. During rapid stops, the motors act as generators, pumping energy back into the DC bus. Without the 2093-ASP06 module installed on the power rail, this regenerative energy would cause the bus voltage to spike, triggering disruptive “DC Bus Overvoltage” faults and halting production. The 2093-ASP06 automatically activates its internal 15Ω resistor (or controls an external one) to burn off this excess power, allowing the line to maintain cycle times and avoid costly unplanned downtime.
Parameter
| Main Parameters | Value/Description |
|---|---|
| Product Model | 2093-ASP06 |
| Manufacturer | Rockwell Automation (Allen-Bradley) |
| Product Category | Servo Drive Shunt / Brake Module |
| System Compatibility | Kinetix 2000 (2093 Series) |
| Internal Resistor | 15 Ω (50 W Continuous) |
| Peak Power (Short-term) | 10.9 kW (e.g., 1 sec duration) |
| DC Bus Voltage | 240 – 425 V DC (Nominal ~325V) |
| Shunt Turn-On Voltage | ~405 V DC |
| Shunt Turn-Off Voltage | ~375 V DC |
| Max Current | 27 A |
| Bus Capacitance | 164 μF |
| Mounting | 2093 Power Rail (Rightmost Slot) |
| Status Indicators | Bus Status, Fault, Over-Temp LEDs |
| Lifecycle Status | Discontinued (End-of-Sale: 2022) |
Technical Principles and Innovative Values
The 2093-ASP06 is a “non-driving” module that acts as a voltage-controlled switch (brake chopper) across the drive system’s DC bus. Its core innovation lies in its seamless integration into the Kinetix 2000 power rail architecture.
- Innovation Point 1: Integrated Power Rail Architecture. Unlike standalone external brake resistors that require separate mounting and complex wiring, the 2093-ASP06 plugs directly into the 2093 power rail alongside axis modules (like the 2093-AC05-MP5). This “slide-and-lock” design minimizes parasitic inductance in the high-power discharge circuit, improves reliability, and drastically reduces cabinet wiring complexity for OEMs.
- Innovation Point 2: Hybrid Resistor Management. The module features a built-in 15Ω, 50W resistor for standard braking duties but intelligently supports connection of external, higher-power resistors via its RC and TS terminals. This allows system designers to handle extreme regenerative loads (e.g., in elevator or crane applications) without needing a completely separate braking unit, offering significant cost and space savings.
- Innovation Point 3: Precision Voltage Threshold Control. The 2093-ASP06 monitors the DC bus voltage with high accuracy. It activates the shunt circuit at approximately 405V DC and deactivates at 375V DC. This precise hysteresis control prevents “hunting” (rapid on/off cycling) and protects the system’s bus capacitors and drive IGBTs from voltage stress, extending the overall lifespan of the Kinetix 2000 system.
