Model Code Definition

DKR：Independent cabinet heavy-duty spindle driver of DIAX series

03：Third-generation DIAX03 hardware platform

.1：Main power board hardware revision V1

W：Built-in axial fan forced convection cooling

200：Continuous rated output current 200Arms

N：Zero internal brake bleeder circuit, external brake resistor required

BE：SERCOS fiber digital bus control PCB (pure fiber bus command, no default ±10V analog speed input)

43：Top-tier expandable SERCOS control board with native RS232+RS485 dual serial interface + multi U-type expansion slots for optional function modules

02：Control mainboard hardware revision V02

Technical Specifications

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

Nominal DC Bus：700VDC

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

Brake Configuration：No internal bleeder, external high-power braking resistor required for all deceleration & regenerative working conditions

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

Protection Class：IP20 (EN60529), vertical cabinet exclusive installation

Ambient Operation：0~+45℃ full-load continuous operation, automatic output derating above 45℃; storage -30~+85℃; installation altitude ≤1000m; relative humidity＜90% non-condensing

Dimension & Net Weight：H822×W350×D353mm, approx 49.5kg

Compatible Motors：Indramat 1MB frameless spindle, 2AD/ADF AC spindle, LAF/LSF synchronous linear servo motors

Interface & Communication Configuration

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

Bus Interface：Dual IN/OUT SERCOS fiber optic ports for multi-axis daisy-chain ring bus layout, no onboard analog ±10V command terminal

Dual Serial Port (BE43 exclusive)：Front panel integrated RS232 (9600/19200 baud, max 15m wiring for IndraWorks debugging) + RS485 (same baud rate, max 500m multi-drop bus for remote multi-drive networking, up to 30 nodes)

Feedback Port：1×15Pin D-SUB connector, compatible with resolver, TTL incremental encoder, sine/cosine high-resolution encoder signals

Onboard IO：Base fixed 8DI/4DO digital terminal; reserved U1~U5 five expansion slots for optional IO, positioning or auxiliary fieldbus plug-in modules

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

DSM Slot：Front vacant memory card slot, no factory pre-installed firmware DSM card for non-FW variant

Core Functions

Three-loop (current-speed-position) full digital closed-loop control via SERCOS real-time fiber bus; native dual serial bus is core advantage of BE43 versus BE11/BE12/BE23/BE31: RS232 for local single-drive parameter tuning & fault diagnosis, RS485 for multi-drive centralized remote monitoring; base spindle functions: constant-speed regulation, high-precision C-axis rotary positioning, rigid tapping; expand electronic gearing & multi-segment electronic cam by installing optional U-slot plug-in modules; comprehensive protection: overcurrent, DC bus over/undervoltage, IGBT overheat, fan failure, feedback cable breakage, front digital LED fault code indication; non-FW blank slot unit cannot power up directly, must equip matched programmed DSM and complete firmware flashing via IndraWorks software。

Application Fields

High-end multi-axis SERCOS bus CNC machining center spindle, long-distance distributed multi-spindle synchronous printing & textile production line, customized heavy-duty special CNC equipment requiring remote RS485 centralized control, old analog CNC digital retrofit with expandable peripheral IO demand.

Operation & Maintenance Instructions

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

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

N-type non-internal bleeder design: external matched braking resistor must be configured regardless of continuous or intermittent deceleration.

BE43 dual-serial mainboard cannot be directly interchanged with BE11/BE12/BE23/BE31 control PCB; mismatched hardware leads to serial communication failure or abnormal axis operation.

Non-FW version needs original DSM parameter backup during maintenance; replacement DSM requires full firmware rewrite via IndraWorks to match original program version.