Model Code Definition

DKR = DIAX02 dedicated high-power spindle drive series

02 = 2nd generation DIAX hardware platform

.1 = Hardware revision Release 1

W = Built-in axial fan forced air cooling structure

300 = Continuous rated output current:300Arms

B = Onboard integrated internal bleeder brake chopper for regular regenerative energy dissipation

BE = SERCOS fiber digital bus mainboard for CNC optical fiber command communication

37 = Exclusive BE37 board specification：Triple feedback channel (sine incremental encoder + resolver + HTL pulse encoder input), high-density onboard fixed digital I/O, enhanced multi-master electronic gearing & synchronous C-axis positioning logic, extended spindle monitoring circuit (core difference vs BE23/BE32: triple feedback exclusive for compound spindle compound control)

01 = Standard fixed factory hardware configuration version

No FW suffix = Empty front memory slot, no factory preloaded firmware card

Technical Specifications

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

DC Bus Nominal Voltage:700VDC

Output Rating:Continuous 300A RMS;250% overload sustain 300ms,300% instantaneous peak overload;max output frequency1200Hz, match up to 93kW spindle motor;switching frequency optional 4kHz/8kHz(derate to141A@4kHz,110A@8kHz)

Braking Capacity:B-type internal bleeder continuous dissipation ~43kW;external high-power braking resistor required for frequent heavy inertia emergency stop

Cooling:Built-in blower forced convection, total internal power loss≈1800W

Protection Class:IP20(IEC), vertical cabinet exclusive mounting

Ambient Condition:Full-load operation0~+45℃(auto derate above45℃);storage -30~+85℃;mount altitude≤1000m;RH＜90% non-condensing

Dimension & Weight:H1065×W468×D392mm,net weight≈40.08kg(88.18lbs)

Interface & Communication Configuration

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

Command Interface(BE37):Full digital SERCOS fiber bus, optical fiber linking CNC controller for speed/torque setpoint transmission

Feedback Ports:Three independent 15pin D-SUB connectors for sine encoder/resolver/HTL three-type feedback respectively(unique for BE37)

Onboard Fixed IO:BE37 integrated high-density 20DI/16DO fixed digital terminal bank,no spare U2 slot for extra IO module

Slot Layout:U1 fixed slot pre-installed BE37 SERCOS board;U3/U4 empty spare slots for optional extended feedback modules

Debug Port:Front RS232 serial port for IndraWorks parameter setup,fault diagnosis,firmware upgrade

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

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

Core Functions

Three-loop full digital closed-loop regulation(position/speed/torque) optimized for compound heavy spindle load;enhanced embedded C-axis indexing,rigid tapping,multi-axis electronic synchronization for multi-feedback composite control. BE37 triple feedback design supports mixed encoder+resolver dual redundant spindle monitoring,improving high-speed positioning stability.B-type built-in brake chopper reduces external braking wiring;complete multi-layer protection against overcurrent,DC bus over/undervoltage,power module overtemperature,feedback signal loss,cooling fan fault with front LED fault code indication;optional FW card realizes full parameter backup and cross-unit data copy during drive replacement。

Application Fields

Large vertical/horizontal heavy CNC machining center main spindle,high-power gravure rotary printing main transmission,heavy textile metallurgy winding spindle,multi-spindle compound machining equipment and obsolete heavy-duty machine tool CNC renovation engineering。

Operation & Maintenance Instructions

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

Reserve≥100mm upper/lower ventilation clearance inside cabinet to guarantee blower airflow and avoid overtemperature shutdown or power derating.

Internal B bleeder covers conventional deceleration;add external high-power braking resistor under frequent heavy-load emergency braking to prevent DC bus overvoltage trip.

Parameter commissioning requires matched SERCOS version IndraWorks;BE-series SERCOS board firmware cannot interchange with BA analog control card program.

Spare drive replacement:Purchase independent FW memory card,backup original full parameters before swap for one-click parameter recovery without repeated motor auto-tuning.