Model Code Definition

DKR: Independent cabinet heavy-duty spindle driver under DIAX series

03: 3rd-gen DIAX03 hardware platform

.1: V1 revision of main power board

W: Integral axial blower forced convection cooling

200: Continuous rated output current 200Arms

Z: Built-in internal brake bleeder module with integrated braking circuit

BE: SERCOS fiber-optic digital bus control PCB, no default analog ±10V speed command input

12: Basic cost-effective SERCOS control board with standalone RS232 interface, minimal expansion slot configuration

01: V01 hardware revision of control mainboard

Technical Specifications

Input Power: 3Φ AC400~480V ±10%, 50/60Hz; separate single-phase AC230V ±10% auxiliary control supply (200VA)

Nominal DC Bus Voltage: 700VDC

Output Rating: Continuous 200A RMS; 250% overload sustainable for 300ms, 300% instantaneous peak overload; maximum output frequency 1600Hz, matched for approx 62kW Indramat 2AD/ADF AC spindle & 1MB frameless spindle motors; default PWM carrier frequency 4kHz, optional 8kHz with partial output current derating

Brake Configuration: Z-type integrated internal brake chopper (peak braking power 40kW, continuous 1kW), external braking resistor optional only for heavy-duty frequent deceleration applications

Cooling: Built-in cabinet blower, total internal power dissipation approx 1200W, minimum required cabinet inlet airflow 300m³/h

Protection Class: IP20 complying with EN60529 standard, exclusive vertical cabinet installation only

Ambient Operation: Full-load continuous operation 0~+45℃, automatic output derating above +45℃; storage temperature -30~+80℃; max installation altitude ≤1000m without derating; relative humidity below 90% non-condensing

Dimension & Net Weight: H822×W350×D353mm, net weight approx 49kg

Compatible Motors: Indramat 1MB frameless spindle motor, 2AD/ADF AC spindle motor, LAF/LSF synchronous linear servo motor

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

SERCOS Bus Port: Dual IN/OUT fiber optic SERCOS ports supporting multi-axis ring daisy-chain layout, no onboard analog speed command terminal

Serial Interface (BE12 Exclusive): Single front-panel RS232 serial port for local IndraWorks parameter tuning and fault diagnosis, max wiring distance 15m; no native onboard RS485 bus for multi-drive remote networking

Motor Feedback Connector: 1×15Pin D-SUB port compatible with resolver, TTL incremental encoder, sine/cosine high-resolution encoder signals

Onboard Digital IO: Fixed base 8DI/4DO terminal block; limited reserved U-type expansion slots for optional auxiliary plug-in modules

Auxiliary Terminal Strip: Drive enable signal, hardware E-stop input, motor PTC thermal protection, fault dry-contact relay output, drive-ready status terminals

DSM Slot: Vacant front memory card slot without factory pre-installed firmware DSM module for non-FW model

Core Functions

Full digital three-loop (current-speed-position) closed-loop regulation via real-time SERCOS fiber bus communication; BE12 core limitation: only standalone RS232 without native RS485 remote bus; standard spindle control functions include constant spindle speed regulation, high-precision C-axis rotary positioning and rigid tapping; optional electronic gearing and multi-segment electronic cam function available via limited U-slot expansion plug-in modules; complete multi-protection mechanism covering overcurrent, DC bus over/under voltage, IGBT overheat, fan malfunction, feedback cable disconnection with front-mounted LED fault code indication; blank DSM slot non-FW unit cannot complete startup directly, needs matched programmed DSM card and full firmware flashing via IndraWorks software.

Application Fields

Standard SERCOS bus CNC machining center main spindle drive, mid-range multi-spindle synchronous textile and packaging production line, conventional CNC equipment digital transformation project without remote centralized multi-drive monitoring requirement, general-purpose heavy-duty machine tool spindle control with low fieldbus expansion demand.

Operation & Maintenance Instructions

Strictly apply rated three-phase AC400~480V industrial input; single-phase mains supply will trigger DC bus undervoltage protection lockout with zero drive output.

Maintain minimum 90mm upper/lower cabinet ventilation clearance to avoid insufficient blower airflow causing overheat shutdown and output derating; keep ≥100mm separation between power cables and control/signal cables for EMC compliance.

Z-type built-in brake chopper eliminates compulsory external braking resistor, install matched external resistor only for ultra-frequent regenerative deceleration working conditions.

BE12 basic control PCB cannot be directly replaced with BE23/BE31/BE43/BE48 mainboards; mismatched hardware results in serial communication failure or abnormal spindle positioning precision.

Reserve original DSM parameter backup during routine maintenance; replacement DSM module requires full firmware reprogramming via IndraWorks to match original application program version.