Model Code Definition

DKR = DIAX02 high-current single spindle driver series

02 = 2nd generation DIAX hardware platform

.1 = Hardware Revision V1

W = Internal 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 optic digital CNC control motherboard

11 = Basic single-channel feedback BE core: resolver+TTL incremental encoder dual feedback, basic fixed digital IO, standard SERCOS bus, standard spindle speed/torque closed-loop

02 = Mainboard second revised hardware version, optimized PCB layout & component derating vs -01 edition, improved anti-interference & fan fault detection circuit

No -FW suffix = Empty front firmware card slot, factory no pre-program FW

Technical Specifications

Main Input：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,matched max spindle power≈93kW；switching freq optional4kHz/8kHz（derate to141A@4kHz,110A@8kHz）

Braking Setup：N-type no internal bleeder,all regenerative energy requires external braking resistor for deceleration & emergency stop

Cooling：Built-in cabinet blower forced convection,total power loss≈1820W

Protection Grade：IP20(IEC),vertical cabinet exclusive mounting

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

Dimension&Weight：H1065×W468×D392mm,net weight≈60.3kg

Interface & Communication Configuration

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

BE11-02 Control Bus：Standard SERCOS fiber real-time bus for CNC motion command transmission

Feedback Port：Single 15pin D-SUB,compatible resolver+TTL incremental encoder dual feedback(single-channel design,non-expandable multi-feedback vs BE79 series)

Onboard IO：12DI/8DO fixed digital onboard IO;U2/U3/U4 vacant spare slots for optional feedback/IO extension modules

Debug Port：Front RS232 serial for IndraWorks parameter setup,fault diagnosis,firmware download

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

FW Slot：Independent empty front slot for post-install DSM firmware memory card

Core Functions

Standard three-loop(speed/torque/position) closed-loop spindle control;BE11-02 retains full basic BE11 functions(constant spindle speed,regular rigid tapping,single-motor simple synchronization),with revised hardware improving EMI suppression and power supply stability compared to BE11-01;no onboard C-axis positioning,electronic gearing,multi-feedback switching(these need BE79 high-end control card).Complete hardware protection:overcurrent,DC bus over/undervoltage,power module overtemperature,blower failure,feedback loss,with front LED fault code indication;must equip matching DSM FW card + dedicated spindle firmware before commissioning。

Application Fields

Heavy-duty standard CNC vertical/horizontal machining center main spindle,general gravure printing main drive,ordinary metallurgy winding spindle,legacy imported non-C-axis machine tool spindle retrofit project。

Operation & Maintenance Instructions

Only access standard three-phase AC400~480V industrial mains,single-phase input triggers DC bus undervoltage lockout.

Reserve ≥100mm top/bottom ventilation gap inside cabinet to guarantee blower cooling airflow,prevent overheat shutdown or current derating.

N-type no internal brake chopper:mandatory configure matched external braking resistor under frequent deceleration/emergency stop to avoid DC bus overvoltage alarm.

Cannot run without DSM firmware card;program dedicated BE11 spindle firmware via IndraWorks before startup;BE11-01/-02 firmware compatible but hardware PCB non-interchangeable cross-replacement.

For field replacement,confirm original mainboard suffix(-01/-02) to avoid mismatch of peripheral wiring and IO definition.