2. Model Interpretation

DKR: The main category of DIAX03 series high-power servo power unit products

03: The third-generation DIAX03 hardware platform architecture

.1: The first-generation mechanical structure version of the body

W200: W = Air-cooled built-in fan; 200 = Rated continuous output current 200A

Z: Built-in integrated discharge braking chopper (N indicates no built-in braking, external braking resistor model)

BE23: Function configuration code 23, SERCOS optical bus + resolver + digital encoder dual feedback hardware configuration

01: The first-generation production version of the hardware revision

FW: Firmware abbreviation, factory pre-installed original standard motion control firmware, supporting DSM software module, power-on does not require separate program writing, bare machine model without FW suffix needs to purchase firmware for burning separately

3. Technical Parameters

Rated three-phase input voltage: 380～480VAC ±10%, 50/60Hz power frequency;

Auxiliary control power supply: AC230V ±10%;

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

Applicable servo motor power: 37kW～93kW heavy-duty spindle / linear servo motor;

Standard communication: SERCOSⅠ optical digital bus;

Motor feedback: Resolver + digital encoder dual-channel compatibility;

Built-in braking: Z configuration integrates braking circuit, short-term peak braking power 150kW;

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

Protection level: IP20 (installed in the control cabinet);

Cooling method: Built-in centrifugal fan in the body for forced air cooling;

Overall machine dimensions: L418mm×W185mm×H395mm, net weight of a single machine 15.8kg;

Electrical protection: Integrated overcurrent, overvoltage, undervoltage, overheating, encoder break, bus fault full hardware protection.

4. Interface and Communication Configuration

Main power input, U/V/W motor power output use thick copper bar bolted terminal, terminal seat engraved phase sequence marking; Side terminal block integrates 24VDC control power supply, fault passive normally open / normally closed interlock contacts; Upper part标配 two sets of SERCOS optical transceiver interfaces， equipped with dust-proof protection cap； Side independent terminal block respectively connects encoder cables， resolver feedback cables； Front panel slot pre-installs DSM firmware module (FW is standard)， can be externally connected handheld debugging panel； No standard RS485 interface， optional Profibus-DP expansion communication card； Independent wiring terminals at the bottom for built-in cooling fan power supply； The machine body reserves dedicated maintenance and testing terminals， convenient for on-site bus and circuit detection.

5. Core Functions

Based on the pre-installed firmware， the FW parses the upper SERCOS bus instructions to achieve precise control of the matching spindle motor for speed / torque / position three-closed loop； During motor deceleration， emergency stop， and power generation conditions， the Z-type built-in braking circuit consumes regenerated electrical energy， suppresses DC bus overvoltage， and avoids power device breakdown； Real-time hardware inspection of the entire circuit， fault instantaneously blocks power output， synchronously outputs fault alarm signals through auxiliary contacts； BE23 hardware + FW firmware optimizes the frequent start-stop and high-low speed switching conditions of the heavy-duty spindle， suppresses acceleration and deceleration impact current； Firmware comes with parameter storage， power-off parameters do not lose， FW-driven devices of the same model can be directly interchanged without reprogramming； Modular separate design， power board， control board， firmware module can be independently disassembled and assembled， reducing maintenance and replacement costs.

6. Application Scenarios Key supporting components: Heavy-duty CNC horizontal milling machine spindle, large and medium-sized injection molding machine main servo system, auxiliary rolling roller drive in metallurgy, complete set of main drive for chemical fiber spinning, roller drive for large rotary printing machines, spindle drive for heavy-duty woodworking machining centers; In the existing market, it is used for major overhaul of imported old Indramat complete machines, automation technical renovation of production lines, and maintenance and replacement of spare parts for ABB and Yaskawa old equipment. It is widely used for the transformation and modification projects of domestic reconditioned European and American second-hand machine tools.

7. Operating and Maintenance Instructions

Maintenance standards: After power off, wait for the DC bus capacitor to discharge for at least 15 minutes before opening the cover for operation to avoid high-voltage electric shock;

Quarterly maintenance: Clean the air intake of the fan, dust from the entire machine's air duct, tighten the copper busbar bolts of the main circuit, wipe the dust, oil and dirt from the SERCOS optical fiber connectors, and check the integrity of the firmware version;

Replacement determination: When the power module breaks down, the mainboard burns out, the fan gets stuck, the driver has irregular and frequent overcurrent protection, or the firmware module is damaged and reports an error, the entire machine should be replaced;