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)

48：Premium multi-function SERCOS control mainboard, native dual serial bus + expanded measuring system interface + full U1~U5 expandable slot layout, compatible with EnDat/SSI external scale plug-in modules

01：Control mainboard hardware revision V01

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 AC spindle & 1MB frameless 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 ~1200W

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 49.2kg

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 (BE48 exclusive)：Front panel integrated RS232 (local IndraWorks debugging, max 15m) + RS485 (remote multi-drive networking, max 500m multi-drop bus, up to 30 drive nodes)

Feedback Port：1×15Pin D-SUB standard motor feedback, compatible with resolver, TTL incremental, sine/cosine encoder; BE48 reserved external scale interface supporting EnDat/SSI linear scale via optional plug-in card

Onboard IO：Base fixed 8DI/4DO digital terminal; full reserved U1~U5 five expansion slots for optional IO, positioning, Profibus/INTERBUS fieldbus or external measuring system 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; core upgrade of BE48 versus BE43 is extended external linear scale access function; base spindle functions: constant-speed regulation, high-precision C-axis rotary positioning, rigid tapping; expand electronic gearing, multi-segment electronic cam and closed-loop full-closed control with external grating ruler by installing matched 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

Ultra-precision 5-axis linkage CNC machining center spindle requiring full-closed-loop external grating scale, high-precision multi-station synchronous printing & packaging main spindle, heavy-duty special-purpose CNC equipment with long-distance RS485 centralized monitoring, high-end old CNC digital retrofit project with multi-fieldbus expand requirement。

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.

BE48 high-density measuring interface mainboard cannot be directly interchanged with BE11/BE12/BE23/BE31/BE43 control PCB; mismatched hardware leads to external scale communication failure or abnormal axis positioning accuracy.

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