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：Integrated cabinet blower forced air cooling

200：Continuous rated output current 200Arms

B：Built-in internal brake bleeder chopper（no mandatory external brake resistor for regular deceleration）

BE：SERCOS fiber digital bus control PCB（digital CNC bus, vs BA analog ±10V command control）

23：High-spec SERCOS mainboard, full resolver+TTL incremental dual feedback, advanced C-axis continuous positioning, high-precision electronic gearing, rigid tapping & multi-cam function enabled, dual IO expansion slots reserved（U2+U3）, superior to mid-grade BE12 board

01：Control PCB hardware revision V01

Technical Specifications

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

Nominal DC Bus：700VDC

Output Rating：Continuous 200A RMS; 250% overload sustain 300ms, peak 300% instantaneous overload; max output frequency 1200Hz, match spindle motor ~62kW; default carrier frequency 4kHz, optional 8kHz with current derate

Brake System：Internal B-type chopper; external braking resistor only required for high-inertia & frequent emergency stop working condition

Cooling：Built-in cabinet fan, total power dissipation ~1380W

Protection Class：IP20, exclusive vertical cabinet installation

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

Dimension & Net Weight：H822×W350×D353mm, approx 50.8kg

Interface & Communication Configuration

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

SERCOS Interface：Dual fiber optic SERCOS real-time bus for CNC digital speed/position command transmission

Feedback Port：Two independent 15Pin D-SUB connectors, resolver + TTL incremental encoder dual feedback configurable via drive parameter

Onboard IO：Standard 10DI/7DO fixed digital IO + dual vacant U2/U3 expansion slots for optional IO modules（BE23 exclusive dual slot vs BE12 single slot）

Debug Port：Front RS232（9600/19200baud, max 15m）+ optional RS485（max 500m）for IndraWorks parameter setting, fault diagnosis and firmware programming

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

DSM Card Slot：Front empty memory card slot for user-mounted DSM firmware card（non-FW model）

Core Functions

Full torque-speed-position three closed-loop spindle control; BE23 top-tier mainboard supports continuous C-axis indexing, high-accuracy electronic gear synchronization, rigid tapping, electronic cam curve programming（core upgrade vs BE12 without tapping/cam function）; comprehensive protection including overcurrent, DC bus over/undervoltage, IGBT overtemperature, fan fault, feedback cable break, front panel LED digital fault code display; non-FW version empty DSM slot needs dedicated BE23 DSM card + offline ESM03 firmware flashing before startup。

Application Fields

High-end vertical machining center spindle with rigid tapping & full C-axis function, heavy-duty precision woodworking spindle, high-speed printing winding/unwinding equipment, SERCOS CNC machine tool spindle system retrofit upgrade.

Operation & Maintenance Instructions

Only connect three-phase AC400-480V industrial mains; single-phase power supply triggers DC bus undervoltage lockout without power output.

Reserve ≥90mm upper/lower cabinet ventilation gap to ensure blower heat exhaust, avoid overheat shutdown or output current derate.

Built-in B brake chopper: no external resistor needed for normal start-stop; install matched braking resistor for high inertia & frequent emergency stop applications.

BE23 high-end control board cannot interchange with BE12 mid-board/BA analog/BT economy SERCOS mainboard during maintenance replacement.

Non-FW variant without preinstalled DSM card: commissioning requires matching BE23 DSM memory card + IndraWorks offline firmware download; -FW version with pre-flashed card powers on directly for parameter configuration.