R911274121 (DKR02.1-W200N-BE32-01-FW)

Name: R911274121 (DKR02.1-W200N-BE32-01-FW)
Brand: Indramat Drives
SKU: DKR02.1-W200N-BE32-01-FW
Price: 452.00 USD
Availability: InStock

DKR Drive Controllers

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The Bosch Rexroth MPN R911274121 (DKR02.1-W200N-BE32-01-FW) is an industrial controller designed for precise control and monitoring of AC electric motors in applications such as machine tools, handling systems, printing machinery, and robotics. It features an integrated power supply module connecting directly to a three-phase 400–480 V AC mains with a 200 A rated current. The controller supports continuous power outputs of 47 kW at 4 kHz switching frequency and 37 kW at 8 kHz, requiring 120 A and 95 A respectively. Interfaces include SERCOS communication, RS-232 for terminal or PC connection, and H1 status display for diagnostics. The unit incorporates five plug-in slots (U1 and U5 functional), accommodates digital servo and resolver feedback, and utilizes air cooling via a built-in blower. The controller operates within a 0 to +45°C ambient temperature range at altitudes up to 1000 m, with an IP20 protection rating and without a bleeder or brake chopper, featuring a rigid DC bus configuration.

Technical Specifications

Use
Control and Monitor AC electrical motors

Interface
RS-232 serial interface

Status Display
H1 status display

Built-in Power Supply
Yes

Rated Current Requirement
200 A

Operating Supply Voltage
AC 3 × 400 – 480 V

Drive Configuration
4/8 kHz drive

Drive Power Voltage
0 – 380 V

System Frequency
800/1600 Hz

Drive Current Requirement
120/95 A

Continuous Power Delivery
47/37 kW

Plug-in Slots
5

Interface Slot U1
SERCOS

Feedback
Digital Servo and Resolver

Software
Firmware Module ESM 02.3

Housing Protection Category
IP 20

Maximum Operating Altitude
1000 m/sea level

Maximum Temperature
+55 degree Celsius with derating

Frequently Asked Questions

How does the DKR02.1-W200N-BE32-01-FW handle real-time control in multi-axis systems?

It uses a SERCOS interface, which provides deterministic communication for synchronized axis control. This ensures precise coordination in applications like robotics or printing machinery.

Can the drive controller operate reliably at higher switching frequencies?

Yes, it supports both 4 kHz and 8 kHz operation. At higher frequencies, output smoothness improves but efficiency may decrease due to switching losses.

How does the dual motor feedback system benefit machine integration?

By supporting both digital servo and resolver feedback, it allows flexibility in motor selection. This reduces retrofit complexity and supports mixed-technology environments.

Does the DKR02.1-W200N-BE32-01-FW support regenerative energy handling?

No, it is configured without a bleeder or brake chopper. Excess regenerative energy must be managed externally through system design.

What are the implications of firmware managed via the ESM 02.3 slot?

It allows modular updates without replacing the entire controller. This provides long-term adaptability as system requirements evolve.

Common Misspellings

DKR021W200NBE3201FW

DKR02 1 W200N BE32 01 FW

dkr02.1-w200n-be32-01-fw

DKR2.1-W200N-BE32-01-FW

Internal Product Review

The DKR02.1-W200N-BE32-01-FW drive controller from Bosch Rexroth Indramat accepts 3-phase 400–480 V input, and outputs 200 A via an integrated power module. It operates at 4 kHz or 8 kHz with built-in blower cooling. Its enclosure is rated IP20 and is designed for protected indoor environments with airflow.