INVT GD350A-015G/018P-4 Heavy Duty Industrial VFD Drive

The INVT GD350A-015G/018P-4 Heavy Duty Industrial VFD Drive is engineered for demanding applications, offering robust performance and advanced control capabilities. This Variable Frequency Drive (VFD) stands out with its high overload capacity, precise speed regulation, and integrated intelligent protection features. Key technical parameters include a power rating of 15kW (015G) or 18.5kW (018P), an input voltage range of 3-phase 380-440V, and an output frequency range of 0-400Hz. It boasts a sophisticated control algorithm for optimal motor performance and energy efficiency, making it a superior choice for critical industrial processes.

Product Specifications

| Parameter                 | Specification                               |

| :------------------------ | :------------------------------------------ |

| Model Number              | GD350A-015G/018P-4                          |

| Power Rating (kW)         | 15 (015G) / 18.5 (018P)                     |

| Input Voltage (3-Phase)   | 380V - 440V                                 |

| Output Frequency Range    | 0 - 400 Hz                                  |

| Control Method            | Sensorless Vector Control, V/f Control      |

| Overload Capacity         | 150% for 60s, 180% for 10s                  |

| Protection Features       | Overcurrent, Overvoltage, Undervoltage, Overload, Overtemperature, etc. |

| Mounting Type             | Wall-mount, Cabinet-mount                   |

| Communication Options     | RS485 (Standard), Optional fieldbus modules |

| Dimensions (Approx.)      | Varies by model, consult datasheet          |

| Ambient Temperature       | -10°C to +40°C                              |

Core Features & Market Positioning

The INVT GD350A-015G/018P-4 distinguishes itself in the competitive industrial VFD market through its exceptional heavy-duty design and advanced control algorithms. Its sensorless vector control provides outstanding torque accuracy and dynamic response, even under fluctuating load conditions, a critical advantage for applications requiring precise speed and torque management. The drive’s superior overload capability, allowing for 150% current for 60 seconds and 180% for 10 seconds, ensures reliable operation during transient peak demands, such as those found in conveyor systems, crushers, and extruders. This robust performance, combined with integrated multi-motor control and energy-saving functions, positions the GD350A series as a high-value, reliable solution for manufacturers seeking to optimize process efficiency and reduce operational costs.

Key Application Scenarios

This heavy-duty VFD is ideally suited for a wide array of demanding industrial applications where reliability and precise motor control are paramount. It excels in controlling pumps and fans in HVAC systems, water supply, and oil and gas applications, significantly improving energy efficiency. Its robust torque output and dynamic response make it a prime choice for material handling equipment like conveyors, elevators, and cranes. Furthermore, the INVT GD350A-015G/018P-4 is highly effective in driving machinery in the plastics industry (extruders, injection molding machines), textiles, metalworking (lathes, milling machines), and general manufacturing processes that require variable speed and robust overload handling.

Practical System Integration Guidance

Integrating the INVT GD350A-015G/018P-4 into existing industrial systems is streamlined by its versatile configuration options and communication protocols. Proper wiring is crucial; ensure the input power terminals (L1, L2, L3) are connected to a stable 380-440V, 3-phase AC supply, and the motor output terminals (T1, T2, T3) are correctly wired to the motor. For digital I/O, connect control signals for start/stop, forward/reverse, and external fault inputs to the designated terminals. For advanced control and monitoring, utilize the standard RS485 port for Modbus RTU communication, or install optional communication modules for protocols like Profibus or Ethernet/IP. Initial parameter setup should focus on motor nameplate data (rated voltage, current, frequency, poles) and then tune the drive's performance parameters, such as acceleration/deceleration times and speed limits, based on the specific application requirements.

Operation and Risk Mitigation

Safe and efficient operation of the INVT GD350A-015G/018P-4 requires adherence to operational guidelines and an understanding of its protection features. Before commissioning, verify that all power and control wiring is secure and that the drive is properly grounded. During operation, monitor key parameters like output current, voltage, and temperature via the drive's display or communication interface to detect any anomalies early. The drive is equipped with comprehensive protection functions, including overcurrent (OC), overvoltage (OV), undervoltage (UV), overload (OL), and overtemperature (OT). In the event of a fault, the drive will display a specific error code; for instance, an OC fault (e.g., "Error 01") indicates excessive motor current, often requiring a check of the motor load or acceleration time settings. Understanding these codes and their corresponding mitigation strategies, detailed in the user manual, is essential for minimizing downtime and preventing equipment damage.

Scalability & Long-Term Value

The INVT GD350A-015G/018P-4 offers significant scalability and long-term value, particularly in evolving industrial automation landscapes. Its compatibility with various fieldbus communication protocols, including Modbus RTU, Profibus, and Ethernet/IP through optional modules, allows for seamless integration into advanced Distributed Control Systems (DCS) and SCADA environments. This facilitates its inclusion in Industrial Internet of Things (IIoT) initiatives, enabling remote monitoring, predictive maintenance, and data-driven process optimization. The drive's modular design and robust build quality contribute to a long operational lifespan, while INVT's commitment to firmware updates ensures that the drive can benefit from ongoing performance enhancements and new features, protecting the investment and maintaining relevance in future automation upgrades.

Frequently Asked Questions (FAQs)

What is the primary advantage of the INVT GD350A-015G/018P-4 VFD?

This VFD offers exceptional heavy-duty performance and precise motor control. Its robust overload capacity ensures reliable operation under demanding industrial conditions.

Its sensorless vector control provides superior torque accuracy and dynamic response. This makes it ideal for applications requiring precise speed and torque management.

The drive’s integrated intelligent protection features enhance system reliability and longevity. It also promotes significant energy savings for connected motor loads.

How does the GD350A-015G/018P-4 handle overload conditions?

The drive is designed with a high overload capacity to manage transient peak demands. It can sustain 150% of its rated current for up to 60 seconds.

For short, intense bursts, it can handle 180% of rated current for up to 10 seconds. This capability is crucial for applications like crushers and extruders.

This robust overload handling prevents nuisance tripping and ensures continuous operation during critical process stages. It safeguards equipment and optimizes production uptime.

What are the key technical specifications for this VFD?

This model operates on a 3-phase 380-440V AC input voltage. It supports output frequencies ranging from 0 to 400 Hz.

The power ratings are available in 15kW (GD350A-015G) and 18.5kW (GD350A-018P) variants. It utilizes advanced control methods like sensorless vector control.

Key protection features include overcurrent, overvoltage, undervoltage, and overtemperature safeguards. Its overload capability is rated at 150% for 60s and 180% for 10s.

In which industries is the INVT GD350A-015G/018P-4 commonly used?

It is widely employed in the manufacturing sector for driving pumps and fans. These applications often require precise flow control and energy efficiency.

The drive is also suitable for material handling systems, such as conveyors and cranes. Its robust torque and overload capacity are beneficial here.

Other key sectors include plastics processing (extruders), metalworking machinery, and textile production. Its reliability is vital for continuous industrial operations.

What are the communication capabilities of this VFD?

The GD350A series includes a standard RS485 communication interface. This supports the Modbus RTU protocol for data exchange.

Optional communication modules are available for integration with other industrial networks. These include popular protocols like Profibus and Ethernet/IP.

These communication features enable seamless integration into SCADA systems and IIoT platforms for remote monitoring and control.

How do I wire the INVT GD350A-015G/018P-4 for basic operation?

Connect the main power supply to the L1, L2, and L3 input terminals. Ensure the supply voltage is within the 380-440V, 3-phase range.

Wire the motor to the T1, T2, and T3 output terminals. Ensure proper grounding for safety. Connect control signals for start/stop to the appropriate digital input terminals.

Refer to the user manual for precise terminal designations and recommended wiring practices to prevent damage or malfunction.

What are common troubleshooting steps for an overload (OL) error?

An OL error indicates the motor is drawing too much current. First, check if the motor load is excessive for the drive's rating.

Verify the drive's overload protection parameters are correctly set for the motor and application. Ensure acceleration times are adequate to prevent surges.

If the issue persists, inspect the motor for mechanical problems or the wiring for faults that might be causing increased resistance.

How does the GD350A-015G/018P-4 contribute to energy savings?

By precisely controlling motor speed, the VFD reduces energy consumption significantly. This is especially true for applications with variable load demands, like pumps and fans.

It optimizes motor operation by matching output speed to the actual process requirement, avoiding energy waste from running at full speed constantly.

Advanced features like sleep modes and energy-saving modes further enhance efficiency, leading to substantial reductions in electricity bills over the drive's lifetime.

Can this VFD control multiple motors simultaneously?

The INVT GD350A-015G/018P-4 is capable of multi-motor control. This allows a single VFD to drive multiple motors, provided their combined load does not exceed the VFD's capacity.

This feature is particularly useful in applications where several identical machines need synchronized operation. It can reduce system complexity and cost.

Proper configuration and motor sizing are critical for successful multi-motor applications to ensure balanced load distribution and prevent VFD damage.

What is the expected lifespan of the INVT GD350A-015G/018P-4 VFD?

With proper installation and operation, the GD350A series offers a long operational lifespan. Its heavy-duty construction is designed for industrial environments.

Regular maintenance, such as cleaning cooling fans and checking connections, can further extend its service life. Adhering to environmental operating conditions is also key.

The quality of components and INVT's manufacturing standards contribute to its reliability and durability, making it a sound long-term investment.