6SE7032-7EB87-2DA1 SIEMENS Programmable controller

SIEMENS 6SE7032-7EB87-2DA1 Overview

The SIEMENS 6SE7032-7EB87-2DA1 is a braking unit from the Siemens SIMOVERT MASTERDRIVES family. Braking units play a critical role in Variable Frequency Drive (VFD) systems by managing regenerative energy generated by motors during deceleration or stopping. It dissipates this energy as heat through a braking resistor, thereby protecting the VFD from overvoltage damage and enabling fast, controlled braking.

Product Detailed Description

• Function:

• Manages and dissipates regenerative energy generated by motors during deceleration (regenerative braking).

• Prevents overvoltage on the VFD's DC link by converting energy into heat through an external braking resistor.

• Enables fast and controlled deceleration and stopping of the VFD and connected motor.

• Suitable for applications requiring frequent acceleration/deceleration, downhill operation with heavy loads, or rapid stopping.

• Features:

• Part of the SIMOVERT MASTERDRIVES series, ensuring compatibility with VFDs from this range.

• Designed for high-power applications.

• Equipped with internal protection mechanisms.

• Documentation on CD (relevant documentation included on a CD).

• IP20 protection rating, suitable for installation inside control cabinets.

Product Parameters

• Product Model: 6SE7032-7EB87-2DA1

• Product Series: SINAMICS / SIMOVERT MASTERDRIVES

• Product Type: Braking Unit

• Rated DC Voltage Range: 510 - 650 V DC

• Rated Power: 170 kW

• Protection Rating: IP20

• Dimensions (L x W x H): 135 x 427 x 350 mm

• Weight: 14.5 kg - 17 kg (slight variations based on source)

• Country of Origin: Germany

• Product Lifecycle: PM300: Active Product (Currently an active product, but the MASTERDRIVES series is in a phase-out period, so considering SINAMICS alternatives is recommended).

Product Advantages

• Efficient Energy Management: Effectively dissipates regenerative energy, protecting the VFD and motor.

• Fast Braking Capability: Allows for rapid deceleration and stopping of the motor, improving production efficiency and safety.

• System Compatibility: As part of the SIMOVERT MASTERDRIVES family, it seamlessly integrates into existing systems.

• High Power Handling: 170 kW rated power makes it suitable for large industrial applications.

• Reliability: Siemens brand ensures reliable operation in industrial environments.

Precautions

• Use with External Braking Resistor: This braking unit requires connection to an appropriate external braking resistor. The selection of the braking resistor is crucial and must be calculated based on the application's resistance and power capacity requirements.

• Heat Dissipation and Installation: The IP20 protection rating means it needs to be installed inside a control cabinet, ensuring adequate space for heat dissipation and ventilation to prevent overheating.

• Compatibility: While it's a MASTERDRIVES series product, with the gradual phase-out of this series, it may be necessary to consider upgrading to Siemens SINAMICS braking solutions for new projects or replacements.

• Electrical Safety: Being a high-voltage and high-power device, installation, wiring, and maintenance must be carried out by qualified professionals and strictly adhere to electrical safety regulations.

• Documentation Review: Detailed installation, wiring, and commissioning information should be referenced from the documentation provided on CD with the product or from relevant manuals available on the official Siemens website.

Product Applications

The SIEMENS 6SE7032-7EB87-2DA1 braking unit is primarily used in industrial scenarios where VFDs control motors requiring frequent or rapid acceleration and deceleration, such as:

• Hoisting Machinery: Cranes, hoists, elevators, etc., which generate significant regenerative energy during lowering or deceleration.

• Conveyor Systems: Large conveyor belts, especially when transporting heavy loads downhill.

• Centrifuges: Requires dissipation of inertial energy during rapid stopping.

• Machine Tools: Fast acceleration/deceleration and positioning control of spindles.

• Test Benches: Testing environments requiring simulated loads and rapid start/stop capabilities.

• Textile Machinery: Precise tension control and braking during winding and unwinding processes.

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Payment: Bank of Chicago, Bank of Singapor

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