Model Code Definition

DKR = Exclusive spindle drive series of DIAX02 platform

02 = 2nd generation DIAX hardware framework

.1 = Hardware revision version 1

W = Built-in cabinet axial fan forced convection cooling structure

300 = Continuous rated output current: 300Arms

B = Embedded onboard brake chopper with internal bleeder resistance for conventional regenerative energy dissipation

BE = SERCOS fiber-optic digital bus mainboard for CNC fiber command transmission

32 = Unique board configuration spec: Sinusoidal incremental encoder single feedback + resolver dual-channel input, expanded onboard high-speed digital I/O logic, optimized multi-axis electronic gearing & synchronous spindle positioning circuit (core difference vs BE23: BE32 adds extended fixed onboard IO, BE23 reserves empty IO slot)

01 = Factory fixed standard hardware configuration version

(No FW suffix = Without pre-installed pluggable firmware memory card)

Technical Specifications

Main Input Power: 3Φ AC400~480V ±10%, 50/60Hz; isolated DC24V auxiliary control power supply

Nominal DC Bus Voltage:700VDC

Output Performance: Continuous rated 300A RMS; 250% overload lasting 300ms, 300% instantaneous peak overload; max output frequency 1200Hz, compatible with 55~93kW rated spindle motors; optional switching frequency 4kHz /8kHz (continuous output derates to 141A@4kHz,110A@8kHz)

Braking Parameter: B-type internal bleeder with continuous regenerative power ~43kW; external high-power braking resistor required only under frequent heavy-inertia emergency deceleration

Cooling Mode: Integral blower forced air cooling, total internal power loss approx.1800W

Protection Grade: IP20 per IEC standard, vertical cabinet-only installation

Ambient Operating Range: Full-load running 0~+45℃, automatic output derating over +45℃; storage temperature -30~+85℃; mounting altitude ≤1000m; relative humidity＜90% non-condensing

Dimension & Weight: H1065×W468×D392mm, net weight ≈59.9kg

Interface & Communication Configuration

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

Command Interface(BE32): Full-digital SERCOS fiber bus, fiber link to upper CNC controller for speed/torque setpoint transmission

Feedback Connectors: Two independent 15pin D-SUB ports separately for sine-wave encoder and resolver feedback signals

Fixed Onboard IO (BE32 exclusive): Pre-wired built-in 14DI/12DO high-speed digital terminal bank (no vacant IO slot on U2 unlike BE23 version)

Slot Layout: U1 fixed slot pre-installed BE32 SERCOS mainboard; U3/U4 spare empty slots for optional extended feedback modules

Debug Port: Front panel RS232 serial port for IndraWorks parameter commissioning, fault diagnosis and firmware upgrade

General Auxiliary Terminals: Drive enable input, hardware E-stop, motor thermal protection input, spindle brake interlock, fault dry-contact relay output, drive ready status output terminals

Reserved Card Slot: Vacant dedicated front slot for aftermarket optional FW pluggable memory card installation

Core Functions

Three-loop full digital closed-loop control (position/speed/torque) optimized for heavy spindle load characteristics; embedded standard C-axis indexing positioning, rigid tapping and high-precision electronic gearing synchronization functions in base firmware. BE32 integrated fixed IO eliminates additional external IO module installation for regular spindle interlock control. Complete multi-layer fault protection covering overcurrent, DC bus over/undervoltage, power module overtemperature, feedback loss and cooling fan failure, with front LED coded fault indicator display. Optional FW memory card supports full parameter backup and cross-drive data replication for field replacement.

Application Fields

Large vertical & horizontal heavy CNC machining center main spindle driving unit, high-power gravure rotary printing main transmission, heavy industrial textile winding spindle, forging metallurgy main drive and obsolete heavy-duty machine tool CNC retrofit projects.

Operation & Maintenance Instructions

Only connect specified three-phase AC400~480V industrial mains; single-phase power input triggers persistent DC bus undervoltage fault and output lockout.

Keep ≥100mm upper/lower ventilation clearance inside control cabinet to guarantee blower airflow and prevent overtemperature-triggered power derating or shutdown.

B-version internal bleeder covers daily regular deceleration; configure external high-power braking resistor for frequent heavy-load emergency stop working conditions to avoid DC bus overvoltage tripping.

Parameter tuning requires matching SERCOS-edition IndraWorks software; BE-series SERCOS control board firmware cannot be mutually replaced with BA analog control card firmware.

Spare drive replacement: Purchase separate FW memory card to back up original drive full parameters before swap for one-click parameter recovery without repeated motor auto-tuning.