DKR02.1-W300N-BE11-01 | Bosch Rexroth Indramat DIAX02 SERCOS Spindle Drive_Ningde Androld Automation Equipment Co.,Ltd.

June 04, 2026

DKR02.1-W300N-BE11-01 | Bosch Rexroth Indramat DIAX02 SERCOS Spindle Drive

Product Overview Integrated single-axis high-power spindle servo drive under DIAX02 DKR platform, U1 factory pre-assembled BE11 SERCOS digital control mainboard, power base configured N-type no internal brake chopper, front independent empty DSM firmware card slot without pre-programmed spindle FW. Optimized for standard AC spindle closed-loop control, compatible with 2AD/ADF spindle, 1MB frameless spindle, LAF/LSF linear motor; original production discontinued, supply limited to surplus new & refurbished units globally.

Description

Model Code Definition

DKR = DIAX02 high-current single spindle driver series

02 = 2nd generation DIAX hardware platform

.1 = Hardware Revision Release 1

W = Built-in axial fan forced air cooling

300 = Continuous rated output current 300Arms

N = No built-in internal brake bleeder chopper（无内置制动斩波器）

BE = SERCOS fiber digital CNC control motherboard

11 = Standard single-board BE11 core: single-channel resolver/TTL encoder dual feedback + basic fixed digital IO + standard SERCOS master communication, basic spindle speed/torque closed-loop, no extended C-axis & electronic gearing logic

01 = Fixed factory standard hardware configuration; no -FW suffix = empty firmware card slot

Technical Specifications

Input Power：3Φ AC400~480V ±10%,50/60Hz；isolated DC24V auxiliary control supply

DC Bus Nominal Voltage：700VDC

Output Rating：Continuous 300A RMS；250% overload sustain 300ms,300% instantaneous peak overload；max output frequency1200Hz,max matched spindle power≈93kW；switching frequency optional4kHz/8kHz（derate to141A@4kHz,110A@8kHz）

Braking Configuration：N-type zero internal bleeder, all regenerative braking energy requires external matched braking resistor installation for deceleration & emergency stop

Cooling：Built-in blower forced convection, total internal power loss≈1815W

Protection Class：IP20(IEC), vertical cabinet exclusive installation

Ambient Operation：0~+45℃ full load(auto derate above45℃);storage -30~+85℃;altitude≤1000m;RH＜90% non-condensing

Dimension & Weight：H1065×W468×D392mm,net weight≈60.1kg

Interface & Communication Configuration

Power Terminals：Heavy-duty L1/L2/L3 mains input, U/V/W high-current motor output terminals

Control Bus(BE11)：Standard SERCOS fiber optic real-time digital bus for CNC speed/torque command transmission

Feedback Port：Single 15pin D-SUB interface, supports resolver + TTL incremental encoder two-type feedback（single-channel design vs multi-channel BE79 series）

Onboard IO：Fixed base 12DI/8DO onboard digital IO;U2/U3/U4 spare vacant slots for optional feedback/IO extension plug-in modules

Card Slot Layout：U1 pre-install BE11 mainboard;front independent empty slot for post-install DSM FW memory card

Debug Port：Front RS232 serial port for IndraWorks parameter tuning,fault diagnosis,firmware flashing

Auxiliary Terminals：Drive enable,hardware E-stop,motor thermal protection,fault relay dry contact,drive ready status terminal strip

Core Functions

Three-loop closed-loop regulation(position/speed/torque) for conventional spindle operation;BE11 limited basic functions: constant-speed spindle control, ordinary rigid tapping, single-motor speed synchronization;no built-in C-axis indexing, multi-spindle electronic gearing redundant feedback switchover（above functions require BE79 high-grade control board）. Complete multi-layer hardware protection(overcurrent,DC bus over/undervoltage,power module overtemperature,fan malfunction,feedback loss) with front seven-segment LED fault code display;needs separately purchased DSM firmware card + matched spindle FW to complete drive commissioning.

Application Fields

Conventional heavy-duty vertical/horizontal CNC machine main spindle, gravure printing main drive, common metallurgy winding spindle, legacy imported ordinary machine tool spindle drive retrofit, non-C-axis standard machining center equipment.

Operation & Maintenance Instructions

Connect specified three-phase AC400~480V industrial mains only; single-phase power input triggers persistent DC bus undervoltage interlock and output lockout.
Reserve ≥100mm upper/lower ventilation clearance inside cabinet to guarantee blower airflow circulation, avoid overheating shutdown or output derating.
N-type no internal brake chopper: mandatory install matched external braking resistor for frequent deceleration or emergency braking to prevent DC bus overvoltage trip.
Unit cannot run without DSM firmware card; purchase exclusive BE11 dedicated FW card and program standard spindle firmware via IndraWorks before commissioning.
Replacement maintenance must confirm original BE11 mainboard version; BE series mainboard firmware cannot cross interchange between BE11/BE79 different models.

Contact Info