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R911278870 (DKR02.1-W200B-BE43-02-FW)

DKR Drive Controllers

  In-Stock, Ships 3-5 Days
Expedited Lead Times on Select Parts
1 Year Warranty Included
Free Ground Shipping
Expedited Lead Times on Select Parts
1 Year Warranty Included
Free Ground Shipping
The Bosch Rexroth drive controller R911278870 (DKR02.1-W200B-BE43-02-FW) is constructed for use in environments requiring IP20 protection. This unit features an inbuilt contactor and is rated for shock resistance up to 8.4g for 5 ms. Thermal management is achieved through an integrated heatsink and vent with a built-in blower, requiring a minimum airflow of 300 m³/h and a maximum pressure of 160 Pa. The controller operates optimally in ambient temperatures from 5°C to 45°C and mandates a minimum clearance of 160 mm at the top and bottom for air circulation. It supports SERCOS command interface, is suitable for digital servo and resolver feedback, and accommodates power and feedback cables up to 75 m. It is designed for vertical mounting, is rated for 200 A, and is specified as Series 02, Version 1, with bleeder configuration and function numeric code 43.

Technical Specifications

Protection Category
IP 20 according to IEC 529 or EN 60529

Shock Resistance
8.4g for 5ms

Energy Dissipation Method
Inbuilt heatsink and air vents

Maximum Pressure
160Pa

Minimum Airflow
300m3/h

Operating Temperature
5°C to 45°C with rated data

Required Clearance
160mm at the top and bottom for air circulation

Connection Cable Length
Max 75m for both power and feedback cables

Installation Orientation
Vertical

Mounting Components
Flanges, gaskets, and screws included

Control Inputs Location
X9 connector on the front panel

Shipping Availability
Worldwide

What does the 200 A rating of the DKR02.1-W200B-BE43-02-FW imply in practice?

It defines the maximum continuous current the controller can supply, impacting motor torque and load handling. Proper cable sizing and protective devices must match this current capacity.

Why is a built-in blower important for cooling in this controller?

Forced air cooling prevents thermal overload during continuous high-current operation. It also reduces the need for external heat exchangers in typical installation environments.

What risks occur if the bleeder resistor is undersized?

An undersized bleeder may overheat during braking cycles, leading to thermal faults or resistor failure. This can interrupt machine operation and damage components.

Can the DKR02.1-W200B-BE43-02-FW support rapid motor reversals?

Yes, the high current capacity and feedback resolution allow precise torque control during reversals. However, system inertia and braking energy must be managed by the bleeder.

How does digital servo and resolver feedback improve motion control accuracy?

Resolvers provide absolute shaft position data, while digital servo signals allow fine velocity and torque control. Combined, they ensure stable operation even in demanding dynamic applications.

DKR021W200BBE4302FW

DKR02 1 W200B BE43 02 FW

dkr02.1-w200b-be43-02-fw

DKR2.1-W200B-BE43-02-FW

Internal Product Review

The Bosch Rexroth Indramat DKR02.1-W200B-BE43-02-FW is a drive controller with SERCOS interface and support for digital servo and resolver feedback. It delivers a 200 A rating, includes built-in blower air cooling, and is configured with a bleeder circuit. It is often employed in CNC machine spindles, transfer lines, robotics, and high-precision automation systems.

Warranty

1-year-warranty
Indramat USA 1 Year Warranty

Repair

product repair We offer a repair service for the DKR02.1-W200B-BE43-02-FW.
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