Model Code Definition

DKR = DIAX single spindle high-power driver series

03 = 3rd generation DIAX03 hardware platform

.1 = Hardware Revision V1

W = Integral axial fan forced air cooling

100 = Continuous rated output current 100Arms

N = No onboard internal brake bleeder chopper（external brake resistor mandatory）

BA = Analog analog control mainboard family（±10V analog command, no SERCOS optical bus）

03 = Base economical analog motherboard: single resolver feedback only, minimal fixed digital IO, no expansion slot reserve, basic speed closed-loop without positioning/electronic gear/C-axis functions

0-1 = PCB hardware version 01（dash split marking equals standard 01 revision）

-FW = Pre-mounted DSM memory card with factory pre-programmed ESM03 firmware, ready for direct startup

Technical Specifications

Main Power Input：3Φ AC400~480V ±10%,50/60Hz; isolated single-phase AC230V/200VA auxiliary control supply

DC Bus nominal voltage：700VDC

Output Rating：Continuous 100A RMS; 250% overload sustain 300ms,300% instantaneous peak overload; max output frequency1200Hz,matched max spindle power≈31kW; carrier frequency fixed 4kHz(default),8kHz optional with output derate

Braking Configuration：N-type no internal bleeder, all regenerative energy dissipated by external braking resistor

Cooling：Built-in cabinet blower forced convection, total power loss≈900W

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

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

Dimension&Net Weight：H785×W315×D330mm,net≈49kg

Interface & Communication Configuration

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

Command Interface：Standard ±10VDC analog speed command terminal (0-10V = 0-max motor RPM, no SERCOS fiber communication)

Feedback Port：Single 15pin D-SUB connector exclusive for resolver feedback; incompatible with TTL/sine-cosine encoder（core difference vs BE/BT series）

Onboard IO：Fixed compact 6DI/4DO basic digital IO; U2/U3/U4 base slots vacant without optional expansion module space

Debug Port：Front RS232 serial for IndraWorks parameter setting,fault diagnosis,firmware backup

Auxiliary Terminal Strip：Drive enable,E-stop,motor PTC thermal protection,fault relay dry contact,drive ready status terminals

FW Module：Front slot factory fixed pre-programmed DSM card（-FW version, non-empty slot）

Core Functions

Three-loop(speed/torque basic closed-loop regulation, no full position closed-loop); BA03 core limits vs BE/BT variants: only analog ±10V speed control, resolver-only single feedback, no continuous positioning/C-axis/electronic gearing/rigid tapping functions; complete hardware protection: overcurrent, DC bus over/undervoltage, IGBT overtemperature, fan malfunction, feedback loss, front LED numeric fault code display; -FW unit completes initialization and runs directly after correct wiring without separate firmware flashing.

Application Fields

Ordinary conventional NC lathe/spindle without positioning function, general woodworking machinery main spindle, basic printing unwinding drive, old analog CNC machine spindle retrofit requiring ±10V analog control.

Operation & Maintenance Instructions

Strictly connect three-phase AC400~480V industrial mains; single-phase input triggers DC bus undervoltage lockout and drive disable.

Reserve ≥80mm top/bottom cabinet ventilation clearance to guarantee blower heat exhaust and avoid overheat derating or fault shutdown.

N-type no built-in brake chopper: configure matched external braking resistor under frequent deceleration/E-stop working condition to prevent DC bus overvoltage alarm.

BA03 analog mainboard hardware incompatible with BT/BE SERCOS control boards; cross replacement forbidden during maintenance repair.

Original factory ESM03 firmware fixed on DSM card; firmware upgrade requires dedicated BA03 exclusive DSM card via IndraWorks offline programming.