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Application Scenarios
In a high-speed automotive component stamping line, a Bosch Rexroth Indramat BTV20 system controls the precise synchronization of multiple servo axes for material feeding and press transfer. The 200_BTV20_3AA-28B-33C-D-FW power supply module sits in the central cabinet, constantly supplying power to the drive amplifiers. During a production run, a voltage sag occurs on the plant’s 400V grid due to a large motor start elsewhere. The module’s wide input voltage tolerance and robust DC link capacitors buffer the system, preventing a low-voltage trip that would have halted the entire press line and caused significant scrap. This reliability is critical in heavy-industry environments like those in Taiyuan’s manufacturing sector, where unplanned downtime directly impacts output.
Parameter
| Main Parameters | Value/Description |
|---|---|
| Product Model | 200_BTV20_3AA-28B-33C-D-FW |
| Manufacturer | Bosch Rexroth (formerly Indramat) |
| Product Category | Servo System Power Supply / Rectifier Module |
| System Platform | Indramat BTV20 Multi-Axis Drive System |
| Input Voltage | 3×400 V AC (+10% / -15%), 45-66 Hz |
| Output Voltage | 200 V DC (DC Bus) |
| Rated Output Power | 20 kW |
| Rated Output Current | 100 A (at 200V DC) |
| Cooling Method | Forced Air Cooling (Internal Fan) |
| Protection Features | Overvoltage, Undervoltage, Overcurrent, Short Circuit, Overtemperature |
| Status Indication | LED Indicators (Run, Fault, Ready) |
| Operating Temperature | 0 °C to +45 °C (Recommended for full performance) |
| Storage Temperature | -25 °C to +70 °C |
| Connection Method | Screw Terminals / Busbar for DC Link |
| IP Rating | IP20 (Must be installed inside a protective enclosure) |
Technical Principles and Innovative Values
- Innovation Point 1: High-Power Density with Integrated DC Link Stabilization: The 200_BTV20_3AA-28B-33C-D-FW is engineered to deliver 20kW of continuous power in a compact, book-style form factor that mounts directly onto the BTV20 system backplane. Unlike standalone power supplies, it integrates a high-capacity DC link capacitor bank directly within the module. This design provides critical energy storage to handle the peak current demands of multiple servo axes during rapid acceleration, ensuring stable bus voltage and preventing disruptive “DC link undervoltage” faults during high-dynamic motion sequences.
- Innovation Point 2: Robust Input Conditioning for Unstable Grids: A key advantage for industrial plants with fluctuating power quality is its wide input voltage tolerance (3x400V AC, +10%/-15%). The module incorporates advanced input filtering and a controlled pre-charge circuit. This robust front-end design protects the sensitive internal IGBTs and capacitors from inrush currents and grid-borne transients, making it exceptionally reliable in harsh electrical environments common in heavy industrial zones.
- Innovation Point 3: Intelligent System Integration via BTV20 Backplane: The module does not operate in isolation; it communicates its status (Ready, Fault, Overload) directly to the system’s master controller (e.g., an MLC or MTX) via the BTV20 backplane. This integrated diagnostic capability allows the entire motion control system to react intelligently to power anomalies, enabling coordinated shutdowns or safe torque off (STO) sequences, thereby protecting both the machinery and the product.
