1. Product Overview
SGDCK-75AEA is a 7.5kW full-digital AC servo amplifier of Yaskawa SGDCK customized platform, AEA denotes factory standard customized I/O definition and built-in regenerative circuit design, specially matched with 7.5kW Yaskawa permanent magnet synchronous servo motor. This driver supports three core control modes for high-precision positioning, speed stabilization and constant torque output, widely configured on CNC machine tools, heavy-duty automation equipment, printing machinery and automated production transmission lines.
2. Electrical Rating Specifications
2.1 Main Power Parameters
Rated matched motor power: 7.5kW
Main circuit input: Three-phase AC 200V~230V, 50/60Hz; control power supply single-phase AC 200~230V
DC bus operating voltage range: 280VDC~330VDC; rated input current 36.5A, maximum continuous three-phase output current 58A
Output adjustable three-phase AC: 0~230V; built-in internal regenerative brake circuit without external standard braking resistor for regular load braking
Cooling structure: Forced air cooling with built-in cooling fan and aluminum radiator
2.2 Environmental Working Specifications
Operating ambient temperature: 0℃ ~ +55℃; storage temperature: -20℃ ~ +70℃
Working relative humidity ≤90%RH without condensation; installation location free of corrosive gas, combustible dust and liquid splashing
Anti-vibration capability: 10~55Hz vibration frequency, allowable running vibration acceleration ≤0.5G
2.3 Core Control Performance Index
Switchable control modes: Position control, analog speed control, analog torque control, mode switching via internal parameter setup
Command input channel: Pulse string input for position instruction; ±10VDC analog voltage signal for speed/torque setting
Encoder interface: Compatible with standard incremental encoder; AEA custom version optimizes internal encoder signal processing circuit and terminal logic
Full auto-tuning function: Automatically detect motor winding resistance, inductance and encoder zero offset to complete gain self-optimization; equipped with mechanical resonance suppression and low-frequency vibration damping function
3. AEA Customized Feature Description
AEA is factory customized specification: internal regenerative braking circuit is pre-installed inside driver body, digital input/output terminal definition is revised compared to standard SGDCK-75A base model, partial reserved function parameters differ from general specification. Standard wiring instruction of basic model cannot be fully applicable; follow AEA attached supplementary wiring document for field wiring and parameter debugging.
4. Installation Requirements
Mount driver vertically on rigid metal mounting plate. Keep ventilation clearance: upper and lower clearance ≥60mm, left-right gap ≥35mm to guarantee heat dissipation. Keep away from heat source and direct sunlight, fasten mounting screws to prevent looseness caused by equipment vibration. Separate power cable and control signal cable during wiring layout to reduce electromagnetic interference: power circuit uses thick multi-core power cable, encoder and control I/O adopt shielded twisted-pair wire; PE protective grounding terminal must connect reliably to equipment common ground bus.
5. Wiring & Commissioning Guidance
Cut off all input power and wait more than 15 minutes for internal high-voltage capacitor full discharge before cabinet opening, wiring modification or maintenance to avoid high-voltage electric shock risk. Complete motor power line, encoder cable and control signal wiring, verify terminal definition against AEA customized specification before power-on test. After power input, execute complete motor auto-tuning without load firstly before formal loaded operation. Real-time operating data including DC bus voltage, output current, internal temperature and fault alarm codes can be checked through front digital display or Yaskawa SigmaWin upper computer debugging software.
6. Fault Diagnosis & Troubleshooting
Overcurrent alarm: Caused by motor winding short-circuit, damaged power cable or internal power module failure; cut off power and inspect cable insulation and motor winding integrity
Overvoltage alarm: Arises from power grid surge voltage or ultra-high speed braking with oversized load inertia; add external regenerative resistor for heavy inertia load when internal brake circuit is insufficient
Overheat alarm: Triggered by radiator dust blockage, fan failure or long-term overloaded running; clean heat sink, check cooling fan operation and reduce actual operating load
Encoder fault alarm: Check broken encoder wire, loose connector and customized AEA pin wiring; replace defective cable or re-plug connector after troubleshooting
Clear fault alarm via power reset or panel reset button after fault elimination; arrange professional overhaul if same fault repeats continuously after multiple resets.
7. Regular Maintenance Regulation
Clean dust on radiator and cooling fan every 3~6 months according to on-site dust environment to avoid poor heat dissipation; regularly retighten loose terminal screws to prevent overheating from poor contact. For long-term idle storage, place driver in dry and sealed environment; perform 30 minutes no-load energizing test before assembly and debugging if storage duration exceeds 12 months.
8. Typical Application Fields
Heavy-duty CNC machining equipment, large-format printing machinery, automated stamping equipment, multi-axis synchronous heavy-load conveying automation and customized special industrial equipment requiring built-in brake circuit and revised I/O logic of AEA specification.
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