Detailed Product Description of SEW BW090-P52B

SEW BW090-P52B is a low-power ultra-resistance grid-type braking resistor in the SEW BW series. It is specifically designed for 0.09–0.18kW extremely small power servo/frequency conversion systems, used for precise braking and energy dissipation of micro-inertia, light-load, and low-speed equipment. It is suitable for the internal / external installation scenarios of MOVIDRIVE micro drivers. 

I. Basic Information

Product Series: BW Series Brake Resistor (Brake Resistor)

Full Model: BW090-P52B

Order Number: 08245630

Product Type: Wound-iron grid brake resistor, metal grid heat dissipation, built-in temperature control protection

Manufacturer: SEW-EURODRIVE (Germany)

Compatible Drives: MOVIDRIVE 0005–0014, MDX60B/61B Micro Series

Application Scenarios: Ultra-miniature equipment braking, light-load emergency stop, micro-inertia positioning, precision instrument control

Protection Grade: IP20

Cooling Method: Natural cooling (no mandatory forced air cooling requirement)

Product Status: Regular Supply

II. Model Meaning Explanation

BW: Brake Resistor (Brake Resistor) Series

090: Nominal Resistance Value 90Ω (Ohm)

P52B: 100W Grid Type, With Temperature Control, Cable Exposed (Special for Micro Drives)

III. Core Technical Parameters

1. Electrical Parameters

Rated Power (PR): 0.1kW (100W, Continuous, 100% ED)

Peak Power (PP): 1kW (Short Time, 10s, 10% ED)

Nominal Resistance (R): 90Ω ±5%

Voltage Rating: 800V DC (Compatible with 300–600V DC Bus)

Insulation Class: F Grade (155℃)

Temperature Switch: Built-in Normally Closed 85℃ Temperature Control, Overheating Cut-off, Linked Drive Alarm

Maximum Temperature Rise: 375℃ (Wire Resistance)

Shell Temperature: ≤120℃ (Safe Contact)

2. Physical Parameters

Package: Metal Grid Heat Dissipation (Strip Grid)

Size (W×H×D): Approximately 280×40×50mm (Ultra-thin Strip)

Weight: Approximately 0.5kg

Installation Method: Wall-mounted, Rail-mounted, Drive Built-in Installation

Cable Connection Method: 2-core Cable Exposed (0.5m)

Installation Fixation: M4 Screw Holes at Both Ends

3. Environmental Characteristics

Operating Temperature: -25℃ ~ +50℃

Humidity: 5–95% (No Condensation)

Vibration Resistance: Industrial Grade, Compatible with Precision Instruments, Micro-Sized Automation Equipment

Life: 10,000 Hours (Full Load)

IV. Functions and Advantages

1. Ultra-low Power, Ultra-high Resistance Precise Braking

100W/90Ω: Precisely Match 0.09–0.18kW Small Power Drive Systems

Ultra-high Resistance Feature: Compatible with Low Bus Voltage, Micro Current Braking Scenarios

Peak 1kW: Satisfy Micro-Inertia, Light Load, Low Speed Equipment's Rapid Braking

Low Inductance Design: Does Not Interfere with Servo Control, High Positioning Accuracy, No Electromagnetic Interference

2. Safe and Reliable

Dual Protection: 85℃ Temperature Control Switch + High Insulation Voltage Rating

Industrial Grade Material: High Temperature Wire Resistance, Corrosion-Resistant Metal Grid

Long Life: Solid State Resistance, No Aging, No Maintenance Required

3. Ultra-thin Strip Design

Ultra-thin Volume, Light Weight: Compatible with Micro Drive Built-in / External Installation

Installation Flexible: Wall-mounted, Rail-mounted, Built-in Multiple Ways

Cable Connection Simple: Pre-connected Cable, Plug-and-Play

4. Strong Compatibility

SEW Original: Directly Match MOVIDRIVE 0005–0014, MDX60B/61B

Voltage Compatibility: 300V/600V DC Bus Common

Special Design: Customized for Micro Drive, Perfectly Compatible

V. Typical Applications

Compatible Power: 0.09–0.18kW Frequency Converter / Servo Drive

System Configuration: Micro Drive + BW090-P52B + Micro Servo / Frequency Motor

Typical Working Conditions:

Precision Instruments, Medical Equipment, Small Rotary Tables

Micro-Sized Conveyor Lines, Light Load Elevators, Electronic Manufacturing Equipment 3C Automation, Micro-Inertia Positioning System, Robot End Effector

Small Packaging Machinery, Laboratory Equipment, Micro Pump Valve Control

VI. Selection and Installation Tips

Power Matching: Braking Power ≤ 0.1kW (Continuous)

Resistance Matching: Micro Driver Braking Unit Recommended 90Ω

Voltage Matching: DC Bus ≤ 600V DC

Heat Dissipation: Vertical Installation, Spacing ≥ 20mm, Natural Cooling is sufficient

Wiring: Pre-connected Cable directly connected to the Driver BRK Terminal

Protection: Temperature Control Switch connected to the Driver BRK Terminal to achieve Overheating Protection

VII. Order Information

Model: BW090-P52B (Grid Type, IP20)

Order Number: 08245630

Guarantee: 12 Months

Standard Equipment: Resistor Body, Installation Screws, Pre-connected Cable (0.5m)

VIII. Comparison of Micro Resistors in the Same Series

BW072-003: 0.3kW / 72Ω (Suitable for 0.18–0.25kW)

BW090-P52B: 0.1kW / 90Ω (Current) (Suitable for 0.09–0.18kW)

BW068-004: 0.4kW / 68Ω (Suitable for 0.25–0.37kW)

BW047-004: 0.4kW / 47Ω (Suitable for 0.37–0.75kW)