Model Code Definition

DKR = DIAX02 spindle dedicated servo driver series

02 = 02 hardware platform generation

.1 = Design Version 1 hardware revision

W200 = Rated continuous output current 200Arms

Suffix supplement rules（extended full model）

N/B/Z：B=built-in internal bleeder chopper; N=no built-in bleeder, grid feedback braking; Z=special customized hardware

BA/BE：BA=analog command interface; BE=SERCOS digital bus interface

01：function option version; FW=standard basic firmware

Technical Specifications

Main Power Input：3Φ AC400~480V ±10%,50/60Hz, grounded industrial three-phase power supply; independent DC24V auxiliary control power supply

DC Bus Voltage：Nominal 700VDC for 400V grade mains

Output Rating：200A continuous output, 250% overload sustain 300ms; PWM switching frequency fixed, max output frequency for high-speed spindle up to 1200Hz

Cooling：Integrated cabinet-mounted blower forced air cooling

Protection Grade：IP20 cabinet vertical installation

Ambient Condition：Full-load operation 0~45℃, derated operation up to 55℃; storage -35~+85℃; installation altitude ≤1000m, RH＜90% non-condensing

Dimension & Weight：Overall size H720×W320×D380mm, net weight approx 103~105kg

Interface & Communication Configuration

Power Terminals：Large-size heavy-duty screw terminals for three-phase mains L1/L2/L3 input, U/V/W motor output terminal block

Feedback Port：Dual 15pin D-SUB ports, compatible resolver + digital incremental encoder dual feedback, dedicated for spindle closed-loop speed/position detection

Control I/O：Terminal strip for drive enable, hardware overtravel limit, spindle orientation homing, brake control, fault alarm dry contact output

Command Channel

BA version：±10V analog speed reference, pulse/direction position input

BE version：SERCOS fiber-optic digital bus full-digital command control

Debug Interface：Front panel RS232 serial port for IndraWorks parameter download and drive debugging

Core Functions

Three-loop full closed-loop control (position/speed/torque), dedicated spindle functions: rigid tapping, spindle positioning/orientation, constant power wide speed regulation for machine tool main spindle. N-type without built-in brake chopper realizes grid regenerative braking; B-type equipped internal bleeder for rapid deceleration under power failure condition. Complete fault diagnosis: overcurrent, bus over/undervoltage, power module overtemperature, feedback line break, fault code displayed via front indicator lamp; standard FW firmware excludes advanced electronic cam and master-slave synchronous functions.

Application Fields

Heavy-duty CNC machining center main spindle, large rotary printing press, high-power linear servo equipment, textile heavy-duty winding spindle, metal forming automation main drive.

Operation & Maintenance Instructions

Only connect to three-phase 400~480V AC mains; single-phase 220V power supply triggers persistent DC bus undervoltage alarm and cannot output rated torque.

Reserve ≥100mm upper and lower cabinet ventilation clearance to ensure blower air circulation and avoid over-temperature shutdown.

N model relies on grid feedback braking; frequent emergency stop or ultra-high inertia load needs optional external bleeder resistor matching.

Parameter tuning requires matching corresponding IndraWorks software version consistent with FW firmware, parameters cannot be interchanged between BA analog and BE SERCOS hardware variants.