Model Code Definition

DKR = DIAX02 heavy current single-axis spindle drive series

02 = 2nd generation DIAX hardware platform

.1 = Hardware Revision V1

W = Internal axial blower forced air cooling

300 = Continuous rated output current 300Arms

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

B = Standard base power chassis without pre-installed control card（裸功率底座，不含主控板）

No suffix = Empty front FW card slot, no preloaded firmware

Technical Specifications

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

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 freq optional4kHz/8kHz（derate to141A@4kHz,110A@8kHz）

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

Cooling：Built-in cabinet blower forced convection,overall internal loss≈1810W

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

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

Dimension&Weight：H1065×W468×D392mm,net weight≈59.8kg

Interface & Communication Configuration

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

Slot layout：U1~U4 all vacant empty slots for post-install BE/BA control mainboard、feedback board、IO extension modules

Auxiliary terminals：Drive enable,E-stop,motor thermal protection,fault relay dry contact,ready status terminals reserved on terminal strip

Debug port：Front RS232 reserved socket（only valid after control board fitted）

FW slot：Independent empty front slot for optional DSM firmware memory card post-assembly

Core Functions

Pure power conversion base without independent control logic;all speed/position/torque closed-loop functions depend on later plug-in BE/BA series control motherboard;complete hardware protection including overcurrent,DC bus over/undervoltage,power module overtemperature,fan fault,front LED alarm indicator reserved;after full control card + FW card assembled,enables standard three-loop spindle closed-loop control,electronic gearing,C-axis indexing,rigid tapping functions。

Application Fields

Spare replacement power base for heavy-duty vertical/horizontal CNC machining center main spindle drive,large gravure printing main drive,heavy metallurgy winding spindle,legacy imported machine tool drive retrofit project;users configure matched BE/BA control card per original machine program requirement。

Operation & Maintenance Instructions

Only access standard three-phase AC400~480V industrial mains,single-phase power leads to persistent DC bus undervoltage interlock.

Keep ≥100mm top&bottom ventilation gap inside cabinet to guarantee blower airflow,avoid overheating derating or shutdown.

N-type no internal brake chopper:must configure external matched braking resistor for frequent deceleration or emergency braking to prevent DC bus overvoltage trip.

Unit cannot run standalone;must equip corresponding BE/BA mainboard + matching FW memory card to complete commissioning via IndraWorks software.

For field replacement,confirm original control board model（BEXX/BAXX）first before purchasing matching plug-in control module.