6SE7021-3EB84-1HF3 Siemens SIMOVERT Masterdrives Power Output Module PEU

6SE7021-3EB84-1HF3 Siemens SIMOVERT Masterdrives Power Output Module PEU

1.Overview of the 6SE7021-3EB84-1HF3 Siemens

The Siemens 6SE7021-3EB84-1HF3 is a power controller unit (PEU) in the SIMOVERT MasterDrives series, specifically designed for 380–460 V three-phase AC systems. With a rated output current of 13.2 A and built-in rectification, braking chopper, and pre-charging circuits, it can directly drive asynchronous or synchronous motors from 5.5 kW (heavy duty) to 7.5 kW (light duty). Its compact IP20 metal housing (130 × 100 × 70 mm) allows for side-by-side installation in control cabinets or, with its built-in fan, forced cooling, ensuring year-round, non-stop operation in industrial environments ranging from −25°C to +70°C.

This module utilizes Siemens vector control algorithms, supporting V/f, closed-loop vector, and servo modes. It boasts speed accuracy of up to ±0.01% and torque dynamic response of less than 10 ms. Built-in RS485 and PROFIBUS-DP interfaces are compatible with USS and Modbus protocols, enabling integration with PLCs, DCSs, or higher-level SCADA systems without the need for a gateway. Onboard LED status indicators and fault code display allow maintenance personnel to locate anomalies such as overvoltage, overcurrent, and ground faults within 30 seconds. Plug-in terminals and a modular cable design reduce on-site replacement time by 80%, significantly minimizing downtime and losses.

With its high power density, rich communication features, and military-grade temperature resistance, the 6SE7021-3EB84-1HF3 is widely used in building HVAC, water pumps and fans, textile and chemical fiber, food packaging, and machine tool spindles. Whether it is supporting new production lines or retrofitting old inverters, it can help users achieve a comprehensive value of 30% energy savings, 50% reduction in floor space, and 90% increase in spare parts commonality through a "plug-and-play" approach. It is an economical and reliable drive core in the Industry 4.0 era.

2.Core Features:

1. Basic Specifications
Model: 6SE7021-3EB84-1HF3
Series: SIMOVERT MasterDrives PEU6 Power Supply Module
Input Voltage: 3AC 380–480 V (50/60 Hz)
Output Voltage: 24 VDC
Rated Power: 1000 W / 10 A
Operating Temperature: −25°C … +60°C
Protection Degree: IP20
Dimensions: 130 mm × 100 mm × 100 mm
Weight: ≈ 2.5 kg

2. Core Function
Provides 24 V control and fan power for MasterDrives inverters, with integrated rectification, filtering, and short-circuit/overload protection.
A wide-range, automatically regulated input withstands transient grid dips, ensuring DC bus stability.
Built-in temperature monitoring and thermal shutdown automatically derate or shut down the unit in the event of overtemperature, preventing thermal damage.
Parallel redundancy is supported, facilitating capacity expansion or achieving 100% power hot backup. Modular plug-and-play design enables replacement in 30 seconds, with an MTBF of > 200,000 hours.

3. Protection and Diagnostics
Input overvoltage and undervoltage lockouts
Output overcurrent and short-circuit constant current limiting
Overtemperature LED alarm and passive contact output
Compliant with CE, RoHS, and UL 508 certifications

4. Typical Applications
SIMOVERT 6SE70 series inverter control power supplies
Continuous operation applications such as cranes, textile machines, fans and pumps, and machine tool spindles
Retrofitting or redundancy upgrades to legacy 24V power supplies

Industrial heating control: Examples include temperature control for salt bath furnaces, industrial frequency induction furnaces, quenching furnaces, and molten glass, as well as temperature control systems using silicon-molybdenum rods, silicon-carbon rods, and other heating elements.

Power conditioning and motor control: Applications include rectifier transformers, primary-side control of electric furnace transformers, DC motor control, and soft-start and speed regulation for energy-saving water pumps and fans.

Other specialized applications include electrolytic plating control, synchronous machine excitation control, steam turbine generator excitation control, and copper wire annealing equipment.

3.Product details pictures

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