2. Model Interpretation

DKR: Product series of high-power spindle servo drive power units based on the DIAX platform

04: Fourth-generation DIAX hardware architecture (DKR04 series, requires external external braking resistor, different from the built-in braking structure in DKR03)

.1: First-generation mechanical structure version of the body, uniform opening installation dimensions, mechanical interchangeability among derivatives of the same series

W400: W = Built-in fan air-cooling heat dissipation; 400 = Rated continuous output current specification of the driver 400A

E: Abbreviation for External, external braking circuit configuration, the body reserves dedicated terminals for braking resistors, requires external DZB01 series braking resistors to achieve energy dissipation

BE12: Function configuration code 12, standard SERCOSⅠ optical bus communication + rotary transformer + dual-channel motor feedback hardware

01: The first-generation hardware revision production prototype version, different tail number versions of the same BE12 configuration can be electrically interchangeable

3. Technical Parameters

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

Auxiliary control power supply: AC230V ±10%, control power consumption 300VA;

Continuous rated output current: 400A, instantaneous peak overload impact current 820A;

Suitable for servo motor power: 55kW～132kW heavy-duty spindle / linear servo motor;

Standard communication: SERCOS optical digital bus;

Motor feedback mode: rotary transformer + incremental encoder dual-channel compatible acquisition;

Braking configuration: E-type external braking, external independent braking resistor for energy dissipation of regenerated electricity;

Continuous operating temperature range: 0℃～+50℃, short-term limit of the sealed cabinet body + 58℃, rated power reduction to 80% operation in 55℃ environment;

Protection level: IP20 (standard installation in the control cabinet);

Cooling method: Built-in high-power axial flow fan in the body for forced air cooling;

Overall machine dimensions: L510mm × W256mm × H492mm, net weight of a single unit 23.6kg;

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

4. Interface and Communication Configuration

Main power three-phase incoming line, U/V/W motor power output uses thickened copper bolt fastening terminals, terminal base engraved phase sequence marking; independent X10 terminal seat on the side of the body is the dedicated connection position for external braking resistors; side terminal row integrates 24VDC control power supply, fault passive NO/NC interlock contacts; upper double groups of SERCOS optical transceiver interfaces, equipped with dust-proof protective cover cap; zone terminal interfaces respectively connect encoder cables, rotary transformer feedback cables; front panel reserved debugging panel slot, can be externally connected handheld debugging unit; no standard RS485 interface, optional Profibus-DP expansion communication card; side of the body reserved multiple factory maintenance dedicated test terminals, facilitating on-site measurement of bus voltage and circuit insulation.

5. Core Functions

Receive SERCOS optical bus instructions from the upper-level control system, achieve high-precision three-loop speed control for high-power spindle motors; in emergency stop, deceleration feedback power generation conditions, through the external E-type external braking circuit to consume regenerated electricity, stabilize the DC bus voltage, avoid power module overvoltage breakdown; real-time hardware fault detection of the entire circuit, abnormal moments lock power output, synchronously output fault alarm signals through auxiliary contacts; BE12 hardware architecture optimizes frequent start-stop, high-speed and heavy-load switching conditions of heavy equipment, suppresses large current during startup; Modular and separate design, the power board and the main control board can be disassembled and assembled independently. In case of failure, only one section can be replaced to reduce maintenance costs. The power-on parameters are saved when the power is off and can be restored when the power is on. The same model driver can be directly replaced without the need for re-tuning of parameters.

6. Application scenarios

Main supporting components: Main shaft of large floor-mounted CNC gantry boring and milling machines, main shaft of heavy-duty horizontal lathes, main drive of large and medium-sized plastic granulation and extrusion, roller drive of metallurgical auxiliary lines, main roller drive of large rotary printing machines, main drive of heavy chemical fiber spinning complete sets, servo system of imported large grinding machines; In the existing market, it is mainly used for the major renovation of old European and American complete sets of equipment, the upgrade of production line automation, and the replacement of maintenance spare parts for existing equipment after the acquisition of Schaeffler by ABB.

7. Operating and maintenance instructions

1. Maintenance standards: Wait for the DC bus capacitor to discharge for ≥ 20 minutes after power off before opening the cover for maintenance to avoid electric shock from residual high voltage on the bus;

2. Quarterly maintenance: Clean the cooling air duct of the blower fan, dust off the power module, tighten the bolts of the main circuit power terminals, clean the oil stains and dust on the fiber optic connectors of SERCOS, and check the looseness and aging of the external braking resistor wiring;

3. Replacement determination: When the power IGBT module is broken down, the hardware of the main control board is burned out, the fan is stuck and stops rotating, or the driver has irregular frequent overcurrent/overvoltage tripping, the entire machine should be replaced;