DMA-30A-1101-D
June 04, 2026

DMA-30A-1101-D

Model Type Bosch Rexroth Indramat Servodyn-D rack-mounted high-power modular servo power unit with shared DC bus structure; empty front personality slot without pre-mounted control board, designed for rack backplane forced cooling installation.

Description

Technical Parameters

  1. DC Bus Input: 670VDC regulated /715VDC unregulated common intermediate DC link, connected via cabinet busbar with system rectifier module

  2. Output Electrical Rating: Continuous RMS 30A, peak transient overload 60A; adjustable PWM switching frequency ranging from 4kHz to 8kHz

  3. Auxiliary Control Supply: 24VDC auxiliary power input, typical working current 1.1A

  4. Cooling Condition: Passive heat sink + rack backplane forced air cooling; output performance derating above ambient 45°C, around 25% deration at 55°C environment

  5. Ambient Specification: Full rated performance at 5℃~45℃, storage temperature -25℃~+70℃, relative humidity ≤75% non-condensing; output derating required when installation altitude exceeds 1000m

  6. Dimension & Weight: W50×H520×D208mm, net weight approx 6.8kg, installation protection grade IP20 for cabinet mounting only

  7. Matching Motors: Indramat SF absolute synchronous motor, SR resolver-type synchronous servo motor, DU asynchronous spindle motor and medium-sized linear synchronous motor

  8. Internal Power Loss: Maximum single-module power dissipation 210W under full-load operation

Interface & Communication Configuration

DC Bus High Power Terminal

Bottom heavy-duty screw terminals for positive and negative DC bus connection, supports parallel multi-drive shared DC-bus cabinet layout.

Motor Power Terminal Block

U/V/W three-phase high-current output terminals plus separate wiring terminals for servo motor electromagnetic holding brake power supply.

Motor Feedback Interface

Standard DB multi-pin connector supporting resolver, TTL incremental encoder, sine/cosine 1Vpp encoder and SSI absolute encoder signal input.

Front Expansion Slot

Unpopulated slot for optional plug-in control cards: SERCOS fiber-optic bus control card or ±10V analog reference command card; independent memory card slot for offline parameter backup and firmware storage.

Service Debug Port

Front panel RS232 serial port for WinDrive parameter uploading/downloading, online fault diagnosis and firmware update; LED indicator array displays running status and fault codes.

Digital I/O Terminals

24VDC configurable DI/DO terminal strip for servo enable signal, emergency stop, stroke limit interlock and fault relay output wiring.

Core Functions

  1. Full digital triple closed-loop control of current loop, speed loop and position loop with 32-bit main processor; integrated automatic motor parameter identification and auto-commissioning function.

  2. Dual control mode optional by installing different option cards: external ±10V analog command control or high-speed SERCOS fiber bus digital network synchronous control.

  3. Complete multi-protection mechanism: overcurrent, overvoltage, DC bus undervoltage, over-temperature, encoder signal loss, output short circuit and motor stall protection with coded fault alarm output.

  4. Shared DC bus regenerative energy management; redundant braking energy from high inertia load deceleration dissipated via cabinet external common braking resistor.

  5. Programmable motor holding brake delay logic, automatic brake opening and closing actions interlocked with servo operational status.

  6. Standardized rack installation design for quick spare module replacement during on-site equipment maintenance.

Application Scenarios

  • Medium-load feed axes and auxiliary spindle drives of CNC machining centers, vertical lathes and grinding machines matched with Servodyn-D rectifier cabinet

  • Medium-duty metal punching, slitting and forming automation equipment precision positioning servo drive

  • Medium-sized printing, packaging and textile processing production line multi-axis synchronized transmission system

  • Spare replacement and refurbishment for aged original Servodyn-D industrial automation equipment

  • Medium-frame linear motor automation positioning equipment and medium-tonnage electric servo auxiliary drive system


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