YOKOGAWA VF701
YOKOGAWA VF701
YOKOGAWA VF701
YOKOGAWA VF701
YOKOGAWA VF701

YOKOGAWA VF701

  • Precision Control: Sensorless vector control for high torque at low speeds (150% torque at 0.5 Hz).
  • Energy Efficiency: Auto-tuning and energy optimization modes reduce power consumption by up to 30%.
  • Reliability: Heavy-duty design with IP20/IP54 enclosures (optional) for harsh environments.
  • Flexible I/O: Multiple digital/analog inputs/outputs (4–20 mA, 0–10V) for integration with PLCs and sensors.
  • Safety Compliance: STO (EN 61800-5-2) and CE/UL/cUL certifications.
  • User Interface: Backlit LCD display with parameter copy function (via USB or keypad cloning).
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Description

YOKOGAWA VF701 Variable Frequency Drive (VFD)

1. Product Description

The YOKOGAWA VF701 is a compact, high-performance variable frequency drive designed for industrial motor control applications. Part of Yokogawa’s VF700 series, the VF701 offers precise speed and torque control for induction motors, supporting a wide range of industries (e.g., manufacturing, water treatment, HVAC). It features advanced vector control technology, energy-saving modes, and built-in safety functions (STO: Safe Torque Off). With a power range of 0.4–7.5 kW and voltage compatibility (200–240V single-phase/three-phase, 380–480V three-phase), the VF701 is suitable for both small-scale and medium-power systems. Its user-friendly interface (LCD display with keypad) and modular design enable easy installation, programming, and maintenance.

2. Product Parameters

Parameter Specification
Model VF701
Brand YOKOGAWA
Product Type Variable Frequency Drive (VFD)
Power Range 0.4–7.5 kW (1.0–18.0 A)
Voltage Input – Single-phase: 200–240V (50/60 Hz)
– Three-phase: 200–240V, 380–480V (50/60 Hz)
Control Method Vector control (sensorless), V/f control
Output Frequency 0.1–400 Hz (resolution: 0.01 Hz)
Protection Features Overload (150% for 60 seconds), overvoltage, undervoltage, short circuit, thermal
Communication Built-in RS-485 (Modbus RTU); optional Ethernet/Fieldbus (Profibus, DeviceNet)
Dimensions (W×H×D) Compact design (varies by power: e.g., 7.5 kW: 190 × 330 × 200 mm)
Weight 2.5–12 kg (varies by power)
Environment Operating: -10°C to +50°C (derate above 40°C); Storage: -20°C to +65°C
YOKOGAWA VF701

YOKOGAWA VF701

3. Advantages and Features

  • Precision Control: Sensorless vector control for high torque at low speeds (150% torque at 0.5 Hz).
  • Energy Efficiency: Auto-tuning and energy optimization modes reduce power consumption by up to 30%.
  • Reliability: Heavy-duty design with IP20/IP54 enclosures (optional) for harsh environments.
  • Flexible I/O: Multiple digital/analog inputs/outputs (4–20 mA, 0–10V) for integration with PLCs and sensors.
  • Safety Compliance: STO (EN 61800-5-2) and CE/UL/cUL certifications.
  • User Interface: Backlit LCD display with parameter copy function (via USB or keypad cloning).

4. Application Areas and Use Cases

  • Industries: HVAC (fans/pumps), conveyor systems, compressors, machine tools, food processing.
  • 典型应用场景:
    • HVAC: Optimizing fan speed in smart buildings to reduce energy costs.
    • Manufacturing: Controlling conveyor belts with precise torque for material handling.
    • Water Treatment: Adjusting pump speed based on water demand (variable pressure control).

5. Competitor Comparison

Feature YOKOGAWA VF701 Competitor (e.g., ABB ACS580/Siemens G120)
Vector Control Sensorless (standard) Sensorless (optional in some models)
Energy Saving Built-in auto-tuning + Eco mode Similar features but higher cost
Modular Design Easy-to-replace parts (e.g., cooling fans) Less modular; requires full unit replacement
Communication Built-in Modbus RTU (optional Ethernet) Similar but higher configuration complexity
Cost Competitive pricing (10–15% lower than peers) Premium pricing for equivalent specs
YOKOGAWA VF701

YOKOGAWA VF701

6. Selection Recommendations

  • Power Requirements: Match the VFD power (kW) to the motor rating (e.g., 7.5 kW for a 10 HP motor).
  • Voltage Type: Choose single-phase (200–240V) for small motors (≤2.2 kW) or three-phase for larger systems.
  • Environment: Select IP54 enclosure for dusty/wet environments (e.g., water treatment plants).
  • Communication: Add optional Ethernet/Fieldbus modules for integration with Yokogawa’s DCS (e.g., Centum VP).

7. Precautions

  • Installation:
    • Ensure proper ventilation (vertical mounting recommended).
    • Use shielded cables for motor wiring (≤50 m for 400 V class).
  • Motor Matching: Perform auto-tuning (motor parameter setup) before operation.
  • Safety:
    • Disable power for 5 minutes before servicing (capacitor discharge).
    • Ground the VFD and motor per local codes (safety earth: ≥4 mm²).
  • Software: Update firmware regularly via Yokogawa’s V-SFT software (free download).

8. Related Models & Accessories

  • Models:
    • VF700 Series: VF700 (base model), VF701 (enhanced with LCD), VF702 (with built-in PLC).
    • High-Power: VF800 series (7.5–500 kW).
  • Accessories:
    • Line reactors (reduces harmonics), DC chokes, braking units, remote keypads.

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