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RELIANCE VZ7000 UVZ701E Digital communication servo drive

RELIANCE VZ7000 UVZ701E is a high-performance digital AC servo drive launched by Reliance Electric, with core functions of high-precision speed, position and torque closed-loop control for industrial AC servo motors. It is compatible with motors ranging from 1.5kW to 600kW, meeting the needs of single-axis drive and multi-axis synchronous control. The drive integrates a high-speed DSP chip and sinusoidal PWM full-digital control algorithm, and is equipped with a SERCOS high-speed synchronous communication interface compliant with IEC/EN61491 standard, enabling real-time data interaction between the servo drive and controller. It adopts an independent design for control power supply and main circuit power supply, with full insulation treatment between the regulator part and external input signals. Combined with a reinforced heat dissipation structure, it can operate stably in harsh industrial environments with strong electromagnetic interference and vibration, serving as a core drive component in multi-axis synchronous production lines and precision machine tools.

RELIANCE VZ7000 UVZ701E Digital communication servo drive

Specific Parameters

  • Electrical ParametersSupply Voltage: Three-phase 200/400V AC, allowable fluctuation range ±10%, 50/60HzPower Adaptation Range: 1.5kW to 600kW AC servo motorsControl Modes: Position control, speed control, torque control, supporting seamless on-line mode switchingSpeed Control Range: 1:2000 (analog reference), 1:8000 (digital reference)Frequency Response: ≥1256 rad/sCommunication Interfaces: Standard SERCOS digital communication interface for high-speed synchronous communication; reserved RS-485 interface (compatible with Modbus RTU)Feedback Support: Compatible with high-resolution encoder (1,000,000 pulses/rev), serial absolute encoder, incremental encoderProtection Functions: Overcurrent, overvoltage, undervoltage, overheating, motor overload, short-circuit, ground fault protection; control circuit overcurrent protection action value 2AControl Power Supply: Independent of main circuit power supply, capable of maintaining parameter setting and status monitoring after main circuit power-off
  • Environmental ParametersOperating Temperature: -10°C to 60°C (non-condensing environment, no derating)Storage Temperature: -40°C to 85°CRelative Humidity: 5% to 95% (non-condensing, continuous operation for 168 hours at 90% humidity and 40°C without failure)Vibration Resistance: Acceleration ≤1G at 25Hz (complies with IEC 60068-2-6 standard)Shock Resistance: 15g acceleration, 11ms duration (complies with IEC 60068-2-27 standard, half-sine shock waveform)Certification Standards: CE certification (EMC and safety compliance)
  • Mechanical ParametersDimensions: 420mm (L) × 230mm (W) × 170mm (H) (including heat sink)Weight: Approximately 10kgMounting Method: Chassis mounting, compatible with standard 35mm DIN railHousing Material: Cold-rolled steel plate spraying (corrosion-resistant, protection class IP20)Heat Dissipation: Forced air cooling, built-in temperature-sensing variable-speed fanIndicators: Power (green steady on = normal), Operation (green blinking = working), Fault (red steady on = abnormal), Communication (yellow blinking = normal)

Product Performance

Excellent control precision: Equipped with high-speed DSP chip and high-resolution encoder feedback, the speed fluctuation rate ≤±0.0125% (when load changes 0-100%), positioning error ≤±0.005mm (with million-pulse encoder), meeting the micron-level control requirements of precision processing. Ultra-fast dynamic response: Frequency response ≥1256 rad/s, torque response time ≤5ms when load changes suddenly, no overshoot, suitable for high-dynamic working conditions with frequent start-stop and forward-reverse switching.

Strong communication synchronization: SERCOS digital communication interface achieves multi-axis synchronization error ≤1μs, supporting linkage control of more than 32 axes, suitable for multi-axis collaborative scenarios such as printing and packaging. Outstanding anti-interference capability: Full insulation design of the regulator part and electromagnetic shielding structure can resist high-frequency electromagnetic interference in industrial environments, with signal transmission bit error rate ≤1×10⁻⁹.

Wide system compatibility: Can directly connect to Reliance automation systems and third-party PLCs/motion controllers, supporting on-line parameter modification and firmware upgrade, enabling maintenance without interrupting operation. Excellent reliability: Industrial-grade components and independent control power supply design ensure Mean Time Between Failures (MTBF) ≥1.2×10⁶ hours, adapting to harsh environments with dust and vibration.




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