2. Model Interpretation

DKR: Product series code = DIAX03 platform high-power servo drive power unit;

03: Product platform version, third-generation DIAX drive hardware architecture;

.1: Hardware structure design version 1 body;

W200: Rated output continuous current 200A specification;

Z: Custom configuration identifier, original factory optional built-in discharge braking circuit (N represents standard version without built-in braking);

BE23: Function configuration code 23, SERCOS optical fiber bus communication + resolver + digital servo dual feedback factory-prepared program;

01: Hardware revision version number, 1st version mass production improved hardware, same specification BE23 derivative models can be interchanged and replaced as a complete machine.

3. Technical Parameters

Rated AC input voltage: three-phase 380～480VAC industrial standard power supply;

Drive rated continuous output current: 200A, peak instantaneous overload impact current 420A;

Applicable servo motor power range: single machine suitable for 37kW～93kW heavy-duty spindle / linear servo motor;

Communication standard: SERCOSⅠ optical fiber digital bus communication interface;

Motor feedback mode: compatible resolver + digital encoder dual-channel servo feedback;

Continuous working environmental temperature: 0℃～+55℃, cabinet sealed installation limit short-term + 60℃;

Protection level: IP20 (cabinet internal installation);

Cooling method: built-in centrifugal fan forced air cooling;

Overall machine dimensions: L415mm×W182mm×H390mm, single unit net weight 15.8kg;

Built-in functions: integrated hardware overcurrent, overvoltage, undervoltage, overheating, encoder break line full closed-loop protection circuit.

4. Interface and Communication Configuration

Main power inlet terminal adopts copper bar locking bolt wiring structure, main circuit three-phase input, U/V/W motor power output terminal zone identification; side terminal block reserved 24VDC control power, fault alarm normally open / normally closed passive contact terminals; upper part standard SERCOS optical fiber bus receiver and transmitter interface, optical interface with dust-proof protection cap; side independent terminal block connects motor encoder, resolver two feedback cables; front of the machine configuration parameter debugging panel slot, can be externally connected handheld debugger; no RS485 standard, only SERCOS optical fiber bus native communication, reserved hardware expansion slot can be added Profibus/DP optional communication card; machine bottom reserved fan power independent wiring terminal.

5. Core Functions

Receive upper controller SERCOS bus instructions, implement high-precision speed and torque dual closed-loop speed control for the matching servo motor; built-in braking circuit consumes and feeds back electrical energy during emergency stop, regenerative power generation, to prevent bus overvoltage breakdown of power module; full-loop hardware-level fault monitoring, when overcurrent, overtemperature, encoder abnormality occurs, immediately block power output and output fault alarm signal through auxiliary contacts; BE23 pre-fabricated firmware is adapted to heavy-duty spindle high-low speed frequent start-stop conditions, suppress acceleration and deceleration impact current; modular hardware structure, power board, control board are designed separately,便于 on-site fault to replace accessories separately， reduce overall maintenance cost.

6. Application Scenarios

Main application： heavy-duty CNC gantry milling machine spindle drive， medium-large injection molding machine main servo system， metallurgical rolling mill auxiliary roller drive， chemical fiber spinning production line main drive， large printing machine drum servo control， woodworking heavy-duty processing center spindle； existing market is mostly used for old Indramat Schlumberger complete equipment technical renovation， production line upgrading， replacement of European and American imported outdated automation equipment fault spare parts， and is the mainstream imported disassembly / new spare parts model in the domestic industrial control maintenance market. 7. Operating and Maintenance Instructions

Maintenance Specifications

Power-off maintenance must disconnect the upper-level air switch at the front end, wait for the DC bus capacitor of the driver to discharge for at least 15 minutes before opening the cover for work to prevent residual high voltage from causing electric shock;

Quarterly Maintenance Items

Clean the dust from the fan inlet and the cooling air duct on the machine body to avoid dust accumulation and blockage causing poor heat dissipation and overheating trip;

Tighten the connection bolts of the main power copper bus, check the insulation of the power cables;

Plug, unplug and clean the SERCOS optical fiber connectors and encoder feedback plugs, remove the oil, dust and dirt from the end faces;

Fault Replacement Determination

When power module breakdown, motherboard hardware burnout, fan gets stuck and does not rotate, or frequent and irregular overcurrent protection shutdown occurs, the entire drive unit should be replaced;