Model Code Definition

DKR：Independent high-power spindle driver of DIAX cabinet series

03：DIAX03 third-gen hardware platform

.1：Power mainboard hardware revision V1

W：Built-in axial fan forced air cooling structure

200：Continuous rated output current 200Arms

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

BE：SERCOS fiber digital bus control PCB (digital bus command instead of analog ±10V)

12：Mid-tier upgraded SERCOS mainboard, expand IO & basic synchronization vs standard BE11

01：Control board hardware revision V01

FW：Preloaded factory DSM memory card + embedded ESM03 official firmware

Technical Specifications

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

Nominal DC Bus：700VDC

Output Performance：Continuous 200A RMS; 250% overload sustain 300ms, 300% instantaneous peak overload; max output frequency 1600Hz, match ~62kW Indramat 2AD/ADF/1MB spindle motor; default PWM carrier 4kHz, optional 8kHz with partial current derating

Brake Configuration：Zero internal bleeder, external high-power braking resistor required for all deceleration & regenerative working conditions

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

Protection Grade：IP20 (EN60529), vertical cabinet mounting 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 & synchronous 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：Dual IN/OUT SERCOS fiber optic ports for multi-axis daisy-chain bus connection, no standard ±10V analog speed terminal

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

Onboard IO：Expanded 12DI/7DO digital terminal set (upgrade from BE11’s 8DI/5DO), reserved U2 optional expansion slot for auxiliary function cards

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

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

DSM Card Slot：Front slot pre-installed factory programmed DSM-FW card, firmware pre-burnt from factory

Core Functions

Speed-current-position triple closed-loop digital control via SERCOS fiber bus; BE12 function range: full basic spindle constant speed control, C-axis rotary positioning, rigid tapping, simple electronic gearing synchronization; no electronic cam function (reserved on high-spec BE23/BE48); comprehensive protection: overcurrent, DC bus over/undervoltage, IGBT overheat, fan failure, feedback wire breakage, front LED digital fault code indication; FW preloaded version powers on directly without extra firmware download or DSM programming.

Application Fields

Mid-range SERCOS bus CNC machining center spindle, digital CNC lathe with C-axis tapping, multi-axis synchronous printing winding spindle, retrofitting of old analog CNC equipment requiring moderate synchronous control capability.

Operation & Maintenance Instructions

Only connect three-phase AC400~480V industrial mains; single-phase input triggers DC bus undervoltage lockout with zero output.

Reserve ≥90mm upper/lower cabinet ventilation clearance to avoid insufficient cooling causing overheat shutdown and output derating.

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

BE12 mainboard cannot directly interchange with BE11 base board or high-end BE23 board, function mismatch triggers abnormal axis movement.

FW model: keep original DSM card intact during maintenance; replacement DSM needs matching firmware rewrite via IndraWorks software.