Model Code Definition

DKR = DIAX high-power single spindle drive series

03 = DIAX03 3rd generation hardware platform

.1 = Main power unit hardware revision V1

W = Built-in axial fan forced air cooling

200 = Continuous output rated current 200Arms

B = Internal integrated brake bleeder chopper

BE = SERCOS fiber digital bus control mainboard（digital CNC bus vs BA analog ±10V control）

12 = Mid-spec SERCOS PCB, dual feedback(Resolver+Incremental Encoder), basic C-axis positioning & simple electronic gearing, reserved U2 IO expansion slot

01 = Control board hardware revision 01

-FW = Factory pre-mounted DSM memory card + preloaded official ESM03 firmware, plug-and-run configuration

Technical Specifications

Input Power：3Φ AC400~480V ±10% 50/60Hz；isolated 24VDC auxiliary control power

DC Bus Nominal Voltage：700VDC

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

Brake System：B internal chopper; external braking resistor only required for high-inertia frequent emergency stop applications

Cooling：Integrated cabinet fan, total power loss ~1375W

Protection Class：IP20, vertical cabinet exclusive mounting

Ambient Operation：0~+45℃ full-load running, automatic current derate above 45℃; storage -30~+85℃; altitude ≤1000m; relative humidity＜90% non-condensing

Dimension & Net Weight：H822×W350×D353mm, approx 50.5kg

Interface & Communication Configuration

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

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

Feedback Connector：Two independent 15Pin D-SUB, switchable resolver/TLL incremental encoder dual feedback via parameter setting

Onboard IO：Standard 10DI/7DO fixed digital IO + spare vacant U2 slot for optional IO expansion module

Debug Interface：Front-panel RS232(9600/19200Baud,15m max)+optional RS485(500m max) for IndraWorks parameter tuning, fault diagnosis

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

DSM Slot：Front slot occupied with factory pre-programmed DSM card（core difference vs non-FW version）

Core Functions

Full torque-speed-position three closed-loop spindle control; BE12 supports C-axis continuous indexing, basic electronic gear synchronization, no built-in high-speed rigid tapping function; comprehensive multi-layer hardware protection including overcurrent, DC bus over/undervoltage, IGBT overheat, fan malfunction, feedback wire break, front LED fault code indication; FW version preloaded firmware, power-on ready for parameter setting without offline flashing。

Application Fields

Vertical machining center spindle with C-axis indexing, heavy-duty woodworking main spindle drive, printing winding/unwinding equipment, retrofit upgrade of legacy SERCOS bus CNC spindle system.

Operation & Maintenance Instructions

Only connect three-phase AC400~480V industrial mains; single-phase power triggers DC bus undervoltage protection and drive lockout.

Reserve ≥90mm upper/lower cabinet ventilation clearance to guarantee fan heat dissipation, prevent overheat derate or shutdown alarm.

B-type built-in brake chopper: external resistor unnecessary under regular start-stop, configure matched braking resistor for high inertia & frequent emergency stop working condition.

BE12 mainboard incompatible with BA analog/BT economical SERCOS boards, cross replacement forbidden during maintenance.

FW model with preinstalled DSM+firmware: directly power on and input motor parameters via IndraWorks, no extra firmware download required; damaged DSM card needs BE12 dedicated replacement + firmware rewrite.