Model Definition

DMA: High-power three-phase inverter unit under Servodyn-D series, matching RMB/DM dual-fan backplane rack system

085B: Power grade coding, continuous rated output 47Arms, peak overload 86Arms, standard 50mm cabinet installation width

1101: Base hardware PCB revision, vacant personality card expansion slot, bare power base without integrated control option board

D: Standard backplane-assisted air cooling mechanical specification, original factory unmodified casing structure

Technical Parameters

DC Link Input: 670VDC regulated /715VDC unregulated shared intermediate bus, paralleled with rectifier via cabinet copper busbar

Output Rating: Continuous 47A RMS, peak transient overload 86A RMS, adjustable PWM carrier frequency 4kHz~8kHz, max output 400V three-phase AC

Auxiliary Control Power: 24VDC control supply, rated input current 1.35A

Cooling Specification: Passive radiator + RMB backplane dual-fan forced convection; output derate 1.25A/℃ above 45℃, 30% full deration at 55℃ ambient

Ambient Condition: Operating 5℃~45℃ non-derate, storage -25℃~+70℃, non-condensing humidity ≤75%; altitude＞1000m requires power derating

Dimension & Weight: W50×H520×D300mm, net weight approx 11.5kg, cabinet protection grade IP20

Compatible Motors: Indramat SF absolute sync motor, SR resolver synchronous motor, DU asynchronous spindle motor, large-frame linear synchronous motor

Max Power Dissipation: 380W single module internal loss

Interface & Communication Configuration

DC Bus High-Power Terminal

Bottom heavy-duty screw terminal for DC positive/negative bus docking, multi-drive parallel common DC-link topology for multi-axis cabinet layout

Motor Power Terminal

U/V/W three-phase high-current output terminal block + independent electromagnetic brake auxiliary power terminal

Motor Feedback Port

Standard DB multi-core connector, compatible resolver, TTL incremental, 1Vpp sine/cosine, SSI absolute encoder multi-type position feedback input

Front Expansion Slot

Unassembled blank slot for optional plug-in: SERCOS fiber-optic digital bus control card or ±10V analog command control card; independent memory card slot for offline parameter backup & firmware storage

Service Debug Port

Front panel RS232 serial interface for WinDrive software parameter upload/download, drive fault diagnosis and firmware upgrade; multi-channel LED status & fault indicator array

Digital I/O Terminal

24VDC configurable DI/DO terminal strip for servo enable, emergency stop, travel limit interlock, fault relay dry-contact output wiring

Core Functions

32-bit full digital processor current-speed-position triple closed-loop control, built-in automatic motor parameter identification and one-click auto-tuning commissioning algorithm

Dual control mode switchable: ±10V analog external command after analog card assembly or real-time SERCOS fiber bus network control with SERCOS option board equipped

Complete multi-level protection logic: Overcurrent, overvoltage, DC bus undervoltage, overheat, encoder loss, output short-circuit, motor stall protection with coded fault alarm code output

Common DC-bus regenerative braking energy recycling, excess deceleration energy consumed by cabinet shared external braking resistor for high-inertia load applications

Programmable motor holding brake delay logic, automatic brake open/close action interlocked with servo running status

Hot-swap spare replacement compatible with RMB backplane, rapid module swap for on-site equipment maintenance; 5-minute capacitor discharge waiting required before cover disassembly after power cut

Application Scenarios

Heavy-duty CNC gantry milling, vertical machining center main spindle and large feed axis drive matching Servodyn-D rectifier power cabinet

Metal stamping, die-casting, heavy slitting production line main high-power servo transmission control with big inertia load

Large-format textile warp knitting, high-speed printing equipment multi-axis synchronous drive system

Legacy Indramat Servodyn-D old heavy equipment renovation and failed high-current servo spare replacement

Large-size electric servo press, heavy-load linear motor precision positioning main drive unit