R911307000 (DKR02.1-W300B-BE74-02-FW)

Name: R911307000 (DKR02.1-W300B-BE74-02-FW)
Brand: Indramat Drives
SKU: DKR02.1-W300B-BE74-02-FW
Price: 426.00 USD
Availability: InStock

DKR Drive Controllers

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The R911307000 (DKR02.1-W300B-BE74-02-FW) is a Bosch Rexroth drive controller engineered for precise management of electrical motors. It incorporates a SERCOS command interface, supports both digital servo and resolver feedback, and features a dynamic braking function for emergency situations. The controller accommodates up to five plug-in modules, with the ESM 02.3 software module installed in the U5 slot. Key specifications include a nominal current rating of 300 A, three-phase AC 400-480 V supply, an integrated air cooling system with blower, and a bleeder resistor for energy dissipation. The unit conforms to IP20 protection, limiting ingress of solid objects to 12.5 mm, and supports operation at ambient temperatures up to +45°C. Model weight is approximately 104 kg, excluding additional accessories.

Technical Specifications

Application
Industrial Automation

Operating Ambient Conditions
Specified Guidelines

Configuration
Customizable with Plug-in Modules

Module Slots
5

Software Module
ESM 02.3 (ordered separately)

SERCOS Interface
Installed in U1 Slot

Protection Category
IP 20

Resistance
12.5 mm Dust Particles

Water-Resistance
No

Mounting
Switch Cabinet

Rated Current
300 A

Cooling System
Built-in Blower Unit

Humidity Tolerance
Yes

Operating Temperature
+45 degrees Celsius (without derating)

Supply Voltage
3 x AC 400 – 480 V

Available for Shipment
Globally

Frequently Asked Questions

Why is resolver feedback often preferred in high-vibration environments?

Resolvers are resistant to shock, dust, and temperature fluctuations compared to optical encoders. This makes them reliable for heavy machinery and outdoor systems.

What space planning is needed for installing the DKR02.1-W300B-BE74-02-FW in a cabinet?

The housing requires adequate clearance for airflow intake and exhaust. Crowding it against other modules restricts cooling efficiency.

How does the design version number impact component compatibility?

The version number defines firmware and hardware alignment within the series. Using mismatched versions may limit feature support or require updates.

What risks arise if bleeder resistors are undersized in discharge management?

Undersized bleeders can overheat, leading to thermal stress or shutdowns. Correct resistor sizing ensures safe energy dissipation during braking.

What considerations are needed when wiring the DKR02.1-W300B-BE74-02-FW for 300A nominal current?

Heavy-gauge conductors and secure terminations are mandatory to handle continuous current safely. Improper cabling can lead to overheating or contact failures.

Common Misspellings

DKR021W300BBE7402FW

DKR02 1 W300B BE74 02 FW

dkr02.1-w300b-be74-02-fw

DKR2.1-W300B-BE74-02-FW

Internal Product Review

The DKR02.1-W300B-BE74-02-FW is a drive controller in the Bosch Rexroth Indramat DKR series. It includes a built-in blower for air cooling, supports a SERCOS command interface, and has a bleeder discharge circuit. Its metal housing is modular and designed to integrate into control cabinets with internal cooling passages.