Model Code Definition

DKR = DIAX02 dedicated spindle drive product line

02 = 2nd generation DIAX hardware platform

.1 = Hardware revision version 1

W = Internal axial blower forced convection cooling design

300 = Continuous rated output current 300Arms

B = Onboard integrated built-in bleeder brake chopper with internal power dissipation circuit for regular deceleration

BE = SERCOS optical fiber digital bus mainboard for CNC digital command transmission via fiber optics

12 = Card configuration code: Single-channel sine-wave incremental encoder + resolver dual feedback, standard spindle speed/torque control hardware without dedicated C-axis electronic gating circuit

01 = Factory fixed standard hardware configuration edition

FW = Removable plug-in firmware memory card for parameter backup, motor data storage and quick spare drive data migration

Technical Specifications

Input Supply: 3-phase AC400~480V ±10%, 50/60Hz; isolated DC24V auxiliary control power

Nominal DC Bus Voltage:700VDC

Output Rating: Continuous 300A RMS, 250% overload sustain 300ms, 300% short-term peak overload; max output frequency 1200Hz, matches 55~93kW heavy-duty spindle motors

Braking Design: B-type embedded internal bleeder circuit; conventional deceleration relies on onboard heat dissipation, external high-power braking resistor only required for frequent heavy-inertia emergency stop

Cooling: Built-in cabinet fan forced cooling, total internal power loss approx.1800W

Protection Grade: IP20 compliant with IEC standard, cabinet vertical mounting

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

Overall Dimension: H1060×W465×D390mm, net weight ≈116.5kg

Interface & Communication Configuration

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

Command Interface(BE12): Full digital SERCOS fiber bus, optical fiber link with upper CNC for speed/torque setpoint transmission

Feedback Ports: Dual 15pin D-SUB connectors for incremental sine encoder and resolver feedback signals (standard BE12 hardware layout)

Slot Layout: U1 fixed slot pre-mounted BE12 SERCOS control board; U2/U3/U4 spare expansion slots for optional digital I/O or extended feedback modules

Debug Port: Front-panel RS232 serial port for IndraWorks parameter setup, fault diagnosis and firmware upgrading

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

FW Exclusive Slot: Dedicated front card slot for pluggable FW memory module for full parameter backup and cross-unit data copy

Core Functions

Full digital three closed-loop regulation (position/speed/torque) optimized for heavy spindle applications, wide constant-power speed adjustment range, standard spindle rigid tapping function embedded in factory firmware. Onboard B-type brake chopper reduces peripheral wiring for normal deceleration scenarios. Comprehensive multi-layer protection against overcurrent, DC bus over/undervoltage, power module overtemperature, feedback loss and cooling fan failure with front LED fault code indication. Equipped FW memory card enables one-click full parameter recovery during spare drive replacement to skip repeated motor auto-tuning.

Application Fields

Heavy-duty vertical & horizontal CNC machining center main spindle drive, large gravure rotary printing main transmission, high-power textile winding spindle, forging & metallurgy main drive and obsolete machine tool CNC upgrade engineering.

Operation & Maintenance Instructions

Only connect to rated 3Φ AC400~480V industrial mains; single-phase incoming power triggers persistent DC bus undervoltage alarm and locks full-power output.

Reserve minimum 100mm upper and lower ventilation clearance inside control cabinet to guarantee smooth fan airflow and avoid over-temperature derating shutdown.

B variant with integrated bleeder: internal circuit satisfies regular load deceleration; install external high-power braking resistor for frequent heavy inertia emergency stop to prevent DC bus overvoltage tripping.

Parameter commissioning requires matching SERCOS-version IndraWorks software; BE-series SERCOS firmware cannot be interchanged with BA analog control board firmware.

When replacing faulty drive: extract original FW card and insert into new replacement unit to restore all preset parameters instantly without secondary debugging.