Model Code Definition

DKR：DIAX high-power standalone spindle driver series

03：DIAX03 third-gen hardware platform

.1：Main power unit hardware revision V1

W：Built-in axial fan forced air cooling structure

200：Continuous rated output current 200Arms

N：No internal brake bleeder chopper, external braking resistor mandatory

BA：Analog ±10V voltage instruction control PCB (non-SERCOS fiber bus, vs BE SERCOS series mainboard)

04：High-function enhanced analog control board (upgrade over basic BA01, add positioning & synchronous functions)

01：Control PCB hardware revision V01

Technical Specifications

Input Supply：3Φ AC400~480V ±10% 50/60Hz; independent single-phase AC230V auxiliary control power

DC Bus Nominal Voltage：700VDC

Output Performance：Continuous 200A RMS; 250% overload sustain 300ms, 300% instantaneous peak overload; max output frequency 1600Hz, matching approx 62kW Indramat spindle motor; default PWM carrier 4kHz, optional 8kHz with partial current derating

Brake Setup：Zero onboard bleeder, external high-power braking resistor required for all deceleration & regenerative working scenarios

Cooling：Integrated cabinet blower, total internal power loss ~1370W

Protection Rating：IP20 (EN60529), vertical installation inside electrical cabinet only

Ambient Condition：0~+45℃ full-load operation, automatic current derate above 45℃; storage -30~+85℃; installation altitude ≤1000m; ambient RH＜90% non-condensing

Dimension & Net Weight：H822×W350×D353mm, approx 50.2kg

Compatible Motors：Indramat 1MB,2AD,ADF,LAF,LSF series AC spindle & servo motors

Interface & Communication Configuration

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

Command Interface：Standard ±10V analog voltage speed port (0~±10V corresponds full rated speed), no SERCOS fiber optic bus

Feedback Port：Single 15Pin D-SUB connector, compatible with resolver or TTL incremental encoder single-channel feedback

Onboard IO：Expandable base IO, default 8DI/5DO fixed digital terminals plus reserved U2/U3 optional expansion slots (absent on BA01 version)

Debug Port：Front panel RS232 serial port (9600/19200 baud) for IndraWorks parameter setting, fault reading & backup

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

DSM Card Slot：Front panel empty memory card slot for non-FW version, no pre-installed factory firmware card

Core Functions

Speed-current dual closed-loop spindle control; core upgrade vs BA01: support C-axis rotary positioning, rigid tapping, electronic gear synchronization, electronic cam function; full protection including overcurrent, DC bus over/undervoltage, IGBT overheat, fan fault, feedback disconnection, front LED digital fault code indication; non-FW blank DSM slot unit cannot run directly after power-up, must install matching programmed DSM card and download dedicated ESM03 firmware.

Application Fields

Precision CNC milling center spindle with tapping/C-axis indexing, high-end woodworking multi-process spindle, printing winding synchronous spindle, retrofit upgrade of old analog CNC machine requiring positioning function.

Operation & Maintenance Instructions

Only connect three-phase AC400~480V industrial power, single-phase input triggers DC bus undervoltage lockout with no output.

Reserve ≥90mm upper & lower cabinet ventilation clearance to avoid overheating shutdown and output derating.

N-type no internal bleeder configuration: external matched braking resistor must be equipped regardless of intermittent or continuous operation.

BA04 enhanced control board cannot be directly replaced with BA01 basic board for spare repair, function mismatch causes abnormal operation.

Non-FW empty slot model: preserve original DSM card parameters during maintenance, replacement card needs parameter re-downloading via IndraWorks.