Model Code Definition

DKR：Independent cabinet-type high-power spindle driver of DIAX series

03：3rd-gen DIAX03 hardware platform

.1：Main power board hardware revision V1

W：Integrated built-in fan forced air cooling

200：Continuous rated output current 200Arms

N：No internal brake bleeder circuit, external brake resistor mandatory

BE：SERCOS fiber digital bus control PCB (pure fiber bus command, no default ±10V analog speed input)

23：Top-tier full-feature SERCOS control mainboard, complete advanced motion control functions

01：Control board hardware revision V01

FW：Factory preloaded programmed DSM card with standard ESM03 firmware

Technical Specifications

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

Nominal DC Bus：700VDC

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

Brake Configuration：Zero internal bleeder, external high-power braking resistor required for all deceleration & regenerative working conditions

Cooling：Integrated cabinet blower, total internal power loss ~1370W

Protection Class：IP20 (EN60529), vertical cabinet-only installation

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

Dimension & Net Weight：H822×W350×D353mm, approx 50.2kg

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

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

Bus Interface：Dual IN/OUT SERCOS fiber optic ports for multi-axis daisy-chain bus layout, no analog ±10V command terminal

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

Onboard IO：16DI/10DO digital terminal bank + dual U2/U3 optional expansion slots for auxiliary function card (higher IO quantity vs BE11/BE12 versions)

Debug Port：Front-panel RS232 serial port (9600/19200 baud), for IndraWorks parameter setting, fault diagnosis and parameter backup

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

DSM Slot：Front slot pre-installed factory programmed DSM-FW card, firmware pre-written at manufacture

Core Functions

Three-loop (current-speed-position) full digital closed-loop control via SERCOS real-time fiber bus; full BE23 feature set: basic spindle constant-speed regulation, high-precision C-axis rotary positioning, rigid tapping, full electronic gearing synchronization + multi-segment electronic cam curve operation (advanced functions unavailable on BE11/BE12); comprehensive fault protection: overcurrent, DC bus over/undervoltage, IGBT overheat, fan malfunction, feedback cable breakage, front digital LED fault code indication; FW pre-firmware model powers on ready directly without offline firmware download or DSM card programming.

Application Fields

High-precision 5-axis CNC machining center SERCOS bus spindle, multi-axis synchronous printing & packaging production line main spindle, complex cam machining CNC lathe with full C-axis function, digital retrofitting for premium old analog CNC equipment.

Operation & Maintenance Instructions

Only feed three-phase AC400~480V industrial mains; single-phase input triggers DC bus undervoltage lockout with no output.

Reserve ≥90mm upper and lower cabinet ventilation gap to avoid overheat protection trip and output derating from insufficient blower cooling.

N-type non-internal bleeder design: external matching braking resistor must be equipped for any intermittent or continuous deceleration scenarios.

BE23 premium control board cannot directly replace BE11/BE12 lower-spec control PCB; mismatched hardware leads to axis jitter or runaway.

FW version must retain original DSM card intact during maintenance; replacement DSM requires full firmware rewrite via IndraWorks software to match original program version.