Bosch Rexroth VFC 3615 Frequency Converter

## 💡 Product Introduction (Product Brief)

The **Rexroth VFC 3615** is an adaptation or regional variant of the high-performance **VFC 3610 series variable frequency drive (VFD)**, tailored specifically for certain machine control applications, often emphasizing enhanced features or a slightly different power topology within the same high-tier hardware platform. Like the VFC 3610, it utilizes **Sensorless Vector Control (SVC)** for improved torque performance and precise speed regulation compared to basic V/f control.

The VFC 3615 maintains the compact design and robustness of the 361x series, making it suitable for standard machinery and industrial processes requiring reliable dynamic response.

* **Manufacturer:** Bosch Rexroth

* **Target Applications:** General industrial applications, including conveyors, packaging machinery, fan/pump systems, and other machinery requiring stable speed control and good starting torque.

* **Key Design Feature:** Based on the VFC 3610 platform, featuring SVC for enhanced performance. Designed for straightforward integration and commissioning.

## 📋 Product Parameters (Specifications)

The VFC 3615 generally aligns with the specifications of the VFC 3610, focusing on the 3-phase 400 VAC input range for industrial use:

| Parameter Category | 3-Phase 400 VAC Input Models |

| :--- | :--- |

| **Rated Output Power (Heavy-Duty)** | 0.75 kW to up to 90 kW (similar to VFC 3610 range) |

| **Mains Voltage Range** | 380–480 V (+10% / -15%) |

| **Supply Frequency** | 50/60 Hz $\pm 5\%$ |

| **Control Technology** | Sensorless Vector Control (SVC), V/f Control |

| **Speed Regulation Accuracy (SVC)** | $\pm 0.5\%$ of maximum speed |

| **Start-up Torque (SVC)** | 180% at 0.5 Hz |

| **Overload Capacity** | 150% for 60 seconds (Heavy-Duty) |

| **Protection Category** | IP20 |

## ⚙️ Functions (Features)

The VFC 3615 shares the core functionality of the VFC 3610, offering a strong set of features for its market segment:

* **Control Modes:** Reliable performance through **SVC** for dynamic motor control.

* **Integrated Braking:** Built-in braking unit (Braking Chopper) standard on models $\ge 4$ kW, simplifying installation of an external braking resistor.

* **PID Control:** Built-in **PID control** function for managing closed-loop processes (e.g., maintaining pressure or level).

* **Communication:** Standard integrated **Modbus RTU** protocol via RS-485.

* **Multi-Speed:** Supports multi-speed operation (up to 15 programmable steps).

* **Auto-Tuning:** Features motor auto-tuning for optimizing performance based on connected motor parameters.

* **Protection:** Comprehensive electronic protection features against overcurrent, overvoltage, motor overload (I²t), phase loss, and grounding faults.

## 📏 Dimensions and Weight

As a variant of the VFC 3610, the dimensions and weights are nearly identical, varying based on the power rating (W x H x D in millimeters):

| Model Example (Partial P/N) | Rated Power (Heavy Duty) | Net Weight (Approx.) | Dimensions W x H x D (mm) |

| :--- | :--- | :--- | :--- |

| **VFC3615-1K50-3P4** | 1.5 kW (3-Ph) | 1.90 kg | 100 x 180 x 140 |

| **VFC3615-5K50-3P4** | 5.5 kW (3-Ph) | 4.40 kg | 120 x 260 x 170 |

| **VFC3615-18K5-3P4** | 18.5 kW (3-Ph) | 12.0 kg | 180 x 370 x 205 |

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