R911289532 (DKR04.1-W300E-BT49-01-FW)

Name: R911289532 (DKR04.1-W300E-BT49-01-FW)
Brand: Indramat Drives
SKU: DKR04.1-W300E-BT49-01-FW
Price: 842.00 USD
Availability: InStock

DKR Drive Controllers

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The Bosch Rexroth drive controller R911289532 (DKR04.1-W300E-BT49-01-FW) facilitates precise control and monitoring of electrical motors in applications such as printing machines and NC machine tools. It supports a 3 x 400–480 V power input, delivering continuous power across a broad speed range with high precision. The unit integrates a mains contactor, emergency stop shutdown for circuit failures, and a SERCOS interface for high-speed, real-time communication. Dimensions are 1080 mm x 571 mm x 370 mm, with required clearance of 80 mm on top and bottom. It operates within +5°C to +45°C, features air cooling via built-in blower, an external 3 kW bleeder resistor (peak 200 kW), and a 720 kWs auxiliary brake resistor. The drive can be used up to 1000 meters elevation, with digital servo and resolver feedback supported, and is rated for an approximate nominal current of 300 A.

Technical Specifications

Use
Control electrical motors and monitor operations

Primary Use
Printing machines and NC machine tools

Integrated Mains Contactor
Yes

Emergency Stop
Yes

Interface
SERCOS

Dimensions
1080 mm x 571 mm x 370 mm

Minimum Distance
80 mm top/bottom

Maximum Power
125 kW

Peak Current
282 A

Ambient Temperature
+5 to +45 degree Celsius

External Bleeder Resistor
Yes

Continuous Power
3kW

Peak Power
200 kW

Auxiliary Brake Resistor
1.8 Ohm

Maximum Braking Energy
720 kWs

Protection Class
IP20

Maximum Altitude
1000 meters

Maximum Temperature
+55 degree Celsius

Basic Unit
DKR04.1-W300E-B

Function Numeric Code
49 with 01 version

Drive
4/8 kHz

Continuous Power at Shaft
93/66 kW

Continuous Current
210/150 A

Cooling
Air-type.

Frequently Asked Questions

How does the DKR04.1-W300E-BT49-01-FW handle regenerative energy during braking?

It uses an external bleeder with a brake chopper, allowing rapid dissipation of excess energy. This minimizes risk of overvoltage and ensures controlled deceleration in emergency stops.

How does digital servo control improve dynamic response compared to analog methods?

Digital control allows finer adjustment of gain and response curves. This results in faster settling times and reduced overshoot during rapid positioning.

In what kind of industrial environments is air cooling with a blower most effective?

It works well in clean to moderately dusty environments where airflow can be maintained. In harsher conditions, external filtration may be needed to protect the blower.

What role does SERCOS communication play in motion control?

SERCOS provides deterministic, real-time data exchange between controller and drive. This ensures predictable motion sequencing and reliable synchronization in demanding processes.

Can the DKR04.1-W300E-BT49-01-FW integrate easily into existing DKR drive setups?

Yes, it follows standardized DKR mounting and configuration protocols. This reduces panel modification time and simplifies replacement or expansion in existing systems.

Common Misspellings

DKR041W300EBT4901FW

DKR04 1 W300E BT49 01 FW

dkr04.1-w300e-bt49-01-fw

DKR4.1-W300E-BT49-01-FW

Internal Product Review

The DKR04.1-W300E-BT49-01-FW is a digitally controlled motion driver from the Bosch Rexroth Indramat DKR series. It incorporates external bleeder with brake-chopper, and uses a built-in blower for air cooling at roughly 300 A current rating. It is commonly deployed in NC machine tools, printing machines, and multi-axis robotics systems.