Vfd Display Modul: Composition, Classification, and Industrial Applications

Types of VFD Display Modules

A Variable Frequency Drive (VFD) display module is a critical interface component that enables operators to monitor and control motor speed, torque, voltage, and other operational parameters. Over the years, these modules have evolved into various specialized types, enhancing both operational efficiency and system integration in industrial environments. Whether used for real-time adjustments, remote monitoring, or advanced diagnostics, selecting the right VFD display module can significantly improve control, safety, and productivity.

Graphic LCD Display Module

Advanced visual interface for detailed parameter monitoring and intuitive control.

Advantages

• Displays complex data (charts, graphs, symbols)
• Supports multi-parameter visualization (speed, torque, voltage, current)
• Enhanced readability with high-resolution screens
• Customizable user interface and layouts
• Improved diagnostics and troubleshooting capabilities

Limitations

• Higher cost compared to basic displays
• May require more training for full utilization
• Potential for increased power consumption

Best for: Complex industrial systems, automation control rooms, applications requiring real-time data visualization

VFD Display Module with Keypad

Integrated input interface for direct control and configuration.

Advantages

• Enables on-site parameter adjustments without external devices
• User-friendly navigation through menus and settings
• Supports quick mode switching (e.g., run, stop, jog, auto/manual)
• Ideal for standalone or field-installed VFDs
• Reduces dependency on computers or mobile devices

Limitations

• Limited screen size may restrict data visibility
• Physical buttons may wear out over time
• Less suitable for complex programming tasks

Best for: Manufacturing floors, maintenance teams, applications requiring frequent manual adjustments

Standard VFD Display Module

Basic digital interface for essential motor control and status monitoring.

Advantages

• Cost-effective and reliable
• Displays core parameters (frequency, RPM, fault codes)
• Simple to operate with minimal learning curve
• Low power consumption and long lifespan
• Widely compatible with most VFD models

Limitations

• Limited to text-based output
• No graphical representation of data
• Minimal customization options
• Not ideal for advanced diagnostics

Best for: Small-scale operations, basic motor control, budget-conscious installations

VFD Display Module with RS485

Communication-enabled module for networked industrial control systems.

Advantages

• Supports long-distance communication (up to 1,200 meters)
• Resistant to electrical noise in industrial environments
• Enables integration with PLCs, SCADA, and HMI systems
• Allows remote monitoring and centralized control
• Facilitates data logging and system diagnostics

Limitations

• Requires proper network configuration and cabling
• May need additional software for full functionality
• Higher complexity in setup and maintenance

Best for: Large-scale plants, automated production lines, distributed control systems

Module Type	Display Capability	User Interaction	Connectivity	Ideal Use Case
Graphic LCD	High (Graphics, Multi-parameter)	Moderate (Menu Navigation)	Local Only or Optional	Advanced Monitoring & Diagnostics
With Keypad	Medium (Text-Based)	High (Direct Input)	Local Control	On-Site Adjustments & Maintenance
Standard Module	Basic (Numerical/Text)	Low (Limited Functions)	None or Minimal	Simple Motor Control
With RS485	Basic to Medium	Remote via Network	High (Industrial Networking)	Remote Monitoring & Automation

Expert Tip: When integrating a VFD display module with RS485, ensure proper termination resistors are used at both ends of the communication line to prevent signal reflection and data corruption, especially in long cable runs.

Note: The term "VFD Display Module" often refers to the entire control board assembly that manages motor speed and torque via variable frequency output. It typically receives input from sensors and feedback systems, processes the data, and delivers precisely controlled voltage and frequency to the induction motor—enabling smooth, efficient, and responsive operation across diverse industrial applications.

Multiple VFD Display Modules and Their Applications

Variable Frequency Drive (VFD) display modules are integral components in modern electronic systems, particularly within printed circuit boards (PCBs), enabling real-time monitoring and control of motor operations. These modules provide critical feedback on system status, operational parameters, alarms, and performance metrics. By integrating VFD display modules into various applications, industries achieve enhanced efficiency, improved safety, and precise control over motor-driven systems. Below is a comprehensive overview of key applications where VFD modules play a transformative role.

Key Applications of VFD Display Modules

Industrial Automation

In industrial automation, VFD modules are essential for controlling three-phase induction motors used in conveyor systems, assembly lines, pumps, compressors, and fans. These motors require variable speed operation to match production demands, and VFDs enable precise speed and torque regulation by adjusting the frequency and voltage supplied to the motor.

The integrated display module allows operators to monitor motor speed, load percentage, operating frequency, and fault codes directly from the control panel. This visibility improves troubleshooting, reduces downtime, and enhances process optimization. Additionally, soft-start capabilities reduce mechanical stress on equipment, significantly extending the lifespan of both motors and driven machinery.

Elevators and Lift Systems

VFDs are widely used in elevator systems to ensure smooth acceleration, deceleration, and precise floor leveling. The drive controls the hoist motor’s speed based on passenger load and travel distance, delivering a comfortable and energy-efficient ride.

The VFD display module plays a crucial role in indicating real-time system status, such as direction of travel, current floor, motor temperature, and error codes. In case of malfunctions—like overcurrent, overheating, or communication errors—the display alerts maintenance personnel immediately, enhancing system safety and reliability. This diagnostic capability is vital for minimizing service interruptions in high-traffic buildings.

HVAC Systems

In heating, ventilation, and air conditioning (HVAC) systems, VFD modules regulate the speed of blowers, fans, chillers, and pumps based on environmental conditions. Instead of running motors at full speed continuously, VFDs modulate motor output according to temperature, humidity, or occupancy sensors, resulting in substantial energy savings—often up to 50% compared to fixed-speed systems.

The display module enables technicians to view parameters like airflow rate, motor RPM, setpoints, and energy consumption. Some advanced systems even allow remote monitoring via building management systems (BMS). This level of control not only improves occupant comfort but also reduces wear on mechanical components and lowers maintenance costs over time.

Electric Vehicles (EVs)

In electric vehicles, VFD technology—often referred to as an inverter or motor controller—is central to propulsion system performance. The VFD controls the AC motor by varying the frequency and amplitude of the electrical supply, enabling precise management of speed and torque under diverse driving conditions.

VFD display modules in EVs provide drivers and engineers with vital data such as motor temperature, battery output, regenerative braking status, and efficiency metrics. During braking, the VFD reverses the motor function to act as a generator, feeding energy back into the battery—a process known as regenerative braking. The display ensures this transition is monitored and optimized for maximum energy recovery and driving smoothness.

Renewable Energy Systems

VFD modules are increasingly deployed in solar and wind power generation systems to manage generator output and grid synchronization. In wind turbines, for example, wind speed fluctuates constantly, requiring the generator to operate at variable speeds to maximize energy capture. The VFD adjusts the output frequency to match grid requirements, ensuring stable and efficient power delivery.

The display module provides operators with real-time insights into energy production, rotor speed, grid voltage, and fault logs. This information is crucial for predictive maintenance and performance optimization. In hybrid solar-wind systems, VFDs help balance load distribution and integrate stored energy from batteries, making renewable installations more reliable and scalable.

Water and Wastewater Management

Although not explicitly mentioned in the original content, VFD modules are extensively used in water treatment plants and pumping stations. They control pump speeds to maintain consistent water pressure while adapting to demand fluctuations, preventing water hammer and reducing energy use.

Integrated displays show flow rates, pump status, system pressure, and alarm conditions (e.g., clogs or leaks). This enables operators to respond quickly to anomalies and maintain uninterrupted service. With rising global focus on sustainable infrastructure, VFDs are becoming standard in smart water management systems.

Application	Primary Function of VFD	Key Display Parameters	Energy Savings Potential
Industrial Automation	Motor speed & torque control for pumps, fans, conveyors	Frequency, RPM, load %, fault codes	Up to 60%
Elevators	Smooth acceleration/deceleration and positioning	Floor level, direction, temperature, errors	Up to 40%
HVAC Systems	Variable airflow and fluid circulation control	Setpoint, actual temp, fan speed, kWh usage	30–50%
Electric Vehicles	Torque control and regenerative braking	Battery voltage, motor temp, regen status	Extends range by 10–15%
Renewable Energy	Generator speed matching and grid sync	Power output, wind/solar input, grid voltage	Optimizes yield by 15–25%

Benefits of Integrating VFD Display Modules

Real-Time Monitoring: Operators can view critical system data instantly, improving situational awareness and decision-making.

Energy Efficiency: Precise motor control reduces unnecessary power consumption, lowering utility bills and carbon footprint.

Enhanced Diagnostics: Built-in alarms and error logging streamline troubleshooting and reduce equipment downtime.

Extended Equipment Life: Soft-start functionality and reduced mechanical stress prolong the life of motors and connected machinery.

Remote Access & Integration: Many modern VFD displays support communication protocols (e.g., Modbus, CANbus) for integration into SCADA and IoT-based monitoring systems.

Important: Proper configuration and calibration of VFD display modules are essential for accurate readings and safe operation. Always follow manufacturer guidelines when installing or updating firmware. Neglecting regular maintenance or misinterpreting display data can lead to system inefficiencies, unexpected shutdowns, or safety hazards. Training personnel on VFD interface navigation ensures optimal utilization across all applications.

Commercial Uses of VFD Display Modules

Variable Frequency Drive (VFD) display modules are essential components in modern industrial and commercial systems, providing intuitive control, real-time feedback, and seamless integration with automation technologies. These intelligent interfaces enhance operational efficiency, improve safety, and support energy conservation across a wide range of applications. From manufacturing plants to HVAC systems, VFD displays serve as the central point for monitoring and managing motor-driven equipment.

Real-Time Monitoring & Diagnostics

VFD display modules deliver continuous, real-time visibility into critical system parameters such as voltage, current, frequency, motor speed, and temperature. This immediate access to operational data enables maintenance teams to detect anomalies early—such as overloads, imbalances, or overheating—before they escalate into costly failures.

• Essential in high-risk industries like oil & gas, chemical processing, and power generation where equipment failure can lead to safety hazards
• Supports predictive maintenance strategies by tracking performance trends over time
• Reduces unplanned downtime through early fault detection and alarm notifications

Key benefit: Enhanced system reliability and improved safety through proactive monitoring

Remote Control & Centralized Operation

Equipped with communication protocols such as RS485, Modbus, or Ethernet/IP, many VFD display modules allow remote access and control from centralized control rooms or SCADA systems. This capability eliminates the need for personnel to visit individual drive locations, especially in large-scale facilities.

• Enables operators to monitor and adjust multiple drives across a plant floor from a single workstation
• Improves response time during emergencies or process changes
• Ideal for distributed systems like water treatment plants, conveyor networks, and pumping stations

Operational advantage: Increased efficiency and reduced labor costs through centralized oversight

Intuitive Parameter Setting & Motor Tuning

The built-in Human-Machine Interface (HMI) on VFD display modules allows users to easily configure and fine-tune motor control parameters such as acceleration/deceleration ramps, speed setpoints, torque limits, and PID control settings. This direct access simplifies commissioning and optimization.

• Enables quick adaptation to changing production requirements in manufacturing environments
• Supports precise control in applications like CNC machines, extruders, and packaging lines
• Helps prevent mechanical stress and premature wear by optimizing start/stop profiles

Practical impact: Improved process consistency and extended equipment lifespan through precise tuning

Energy Efficiency & Cost Savings

By enabling precise control of motor speed based on actual load demand, VFD display modules play a crucial role in reducing energy consumption. Unlike fixed-speed motors that run at full capacity regardless of need, VFD-controlled motors adjust output dynamically—leading to significant power savings.

• HVAC systems can reduce fan and pump energy use by up to 50% using variable speed control
• Water treatment and irrigation systems benefit from demand-based pumping, lowering utility costs
• Contributes to sustainability goals and compliance with energy efficiency standards (e.g., ENERGY STAR, ISO 50001)

Financial benefit: Substantial long-term savings on electricity bills with rapid ROI in high-usage applications

Integration with Automation Systems

VFD display modules are designed to seamlessly integrate with broader industrial automation ecosystems, including Programmable Logic Controllers (PLCs), Supervisory Control and Data Acquisition (SCADA) systems, and Building Management Systems (BMS). This interoperability allows for coordinated control of complex processes.

• In manufacturing, VFDs can be synchronized with production lines to match conveyor speeds, optimize throughput, and reduce bottlenecks
• In smart buildings, HVAC fans and chillers adjust automatically based on occupancy and temperature feedback
• Data from VFDs can be logged and analyzed for performance benchmarking and continuous improvement

Strategic value: Enables smarter, data-driven operations with minimal manual intervention

Application-Specific Benefits

Different commercial sectors leverage VFD display modules to address unique operational challenges. Their versatility makes them suitable across diverse industries.

• Manufacturing: Precision motor control ensures consistent product quality and reduces scrap rates
• Water & Wastewater: Flow regulation based on demand improves pump efficiency and prevents pipe surges
• Commercial HVAC: Adaptive fan and compressor control enhances occupant comfort while minimizing energy use
• Mining & Material Handling: Controlled startup of heavy conveyors reduces mechanical strain and electrical inrush

Industry insight: Tailored control strategies maximize return on investment in sector-specific applications

Expert Recommendation: When selecting VFD display modules, prioritize models with user-friendly interfaces, robust communication options, and compatibility with existing control infrastructure. For new installations, consider drives with touchscreen HMIs and built-in diagnostics to future-proof your system. Training maintenance staff on VFD functionality ensures full utilization of monitoring and configuration features, maximizing both performance and energy savings.

Industry	Primary Use Case	Key Parameters Monitored	Expected Benefit
Manufacturing	Production line motor control	Speed, torque, acceleration, fault codes	Improved throughput and reduced downtime
HVAC	Fan and pump speed regulation	Frequency, current, temperature	Energy savings up to 40–60%
Water Treatment	Variable flow pumping	Pressure, flow rate, motor load	Reduced wear and optimized water delivery
Mining & Bulk Handling	Conveyor belt control	Startup current, speed profile, vibration	Extended equipment life and safer operation

Additional Advantages of Modern VFD Display Modules

• Alarm Logging: Built-in event history helps diagnose recurring issues and plan maintenance
• Multi-Language Support: Displays available in multiple languages improve usability in global operations
• Security Features: Password protection prevents unauthorized changes to critical settings
• Scalability: Modular designs support expansion and integration with IoT platforms
• Durability: Ruggedized displays withstand harsh environments including dust, moisture, and vibration

What To Consider When Choosing A VFD Display Module

Selecting the right Vacuum Fluorescent Display (VFD) module is crucial for ensuring reliable performance, seamless integration, and long-term durability in industrial and automation environments. VFDs are widely used for their high brightness, excellent visibility in various lighting conditions, and robust operation. This guide outlines the key factors to evaluate when choosing a VFD display module to match your system requirements and operational environment.

Pro Tip: Always verify compatibility with your existing control architecture before finalizing a VFD display module. Incompatible modules can lead to integration delays, increased costs, and system downtime.

1. Communication Protocols

The communication protocol determines how the VFD display module exchanges data with controllers such as PLCs, microcontrollers, or SCADA systems. Selecting a module that supports your system’s communication standard ensures real-time monitoring, control, and diagnostics.

• Industrial Applications: For large-scale or distributed systems, RS485 or MODBUS protocols are highly recommended due to their long-distance transmission capabilities (up to 1,200 meters) and strong resistance to electromagnetic interference.
• Simple Setups: Smaller or localized systems may benefit from basic serial (UART) or parallel communication interfaces, which are easier to implement and require fewer components.
• Future-Proofing: Consider modules with multiple protocol support or configurable interfaces to accommodate future system upgrades or expansions.

2. Display Type: Graphical vs. Textual

The type of display directly impacts how information is conveyed and interpreted by operators, affecting usability and decision-making.

• Graphical VFDs: Ideal for complex systems requiring visualization of trends, waveforms, or system diagrams. These displays support custom icons, bar graphs, and multi-line data presentation, making them suitable for advanced monitoring in manufacturing, energy, or process control applications.
• Text-Only VFDs: Best suited for displaying operational parameters such as speed, frequency, voltage, or error codes. They are cost-effective, energy-efficient, and sufficient for basic drive control in HVAC, conveyor systems, or pumps.
• Resolution & Layout: Evaluate pixel density, character size, and screen layout to ensure readability from typical viewing distances.

3. Input/Output (I/O) Compatibility

Seamless integration depends on the compatibility between the VFD display module and the connected control and sensing devices. Mismatches in signal types or connector formats can result in faulty readings or communication failures.

• Verify that the module supports the required input signals (e.g., analog 0–10V, 4–20mA, or digital TTL/CMOS).
• Ensure output interfaces (such as relay contacts or open-collector outputs) align with downstream devices like alarms, indicators, or control relays.
• Check for built-in isolation or surge protection, especially in environments prone to electrical noise or voltage spikes.
• In fast-response systems (e.g., robotics or precision machinery), low-latency I/O processing is essential to maintain system synchronization.

4. Environmental Considerations

VFD modules often operate in harsh industrial environments, so their resilience to external conditions is critical for long-term reliability.

• Temperature Range: Choose modules rated for your operating environment—industrial-grade VFDs typically function between -20°C to +70°C.
• Dust & Moisture Protection: Look for IP65 or higher ratings if the module will be exposed to dust, water spray, or humidity (e.g., outdoor enclosures or washdown areas).
• Sunlight Readability: For outdoor or brightly lit areas, select models with high-brightness screens (≥2000 cd/m²) and anti-reflective coatings. Built-in adjustable backlights enhance visibility during day and night operations.
• Vibration & Shock Resistance: In mobile or heavy machinery applications, ensure the module is mechanically robust and securely mounted.

5. Power Supply Requirements

Power efficiency and supply compatibility affect both operational costs and system design complexity.

• Most VFD display modules operate on low-voltage DC supplies (5V, 12V, or 24V), which are commonly available in industrial control panels.
• Verify that your power source can deliver stable voltage and sufficient current, especially when multiple modules are connected.
• Opt for energy-efficient models with automatic brightness control or sleep modes to reduce power consumption in continuously running systems.
• Consider modules with wide input voltage ranges (e.g., 10–30V DC) for greater flexibility in power sourcing and voltage fluctuations.

Selection Factor	Recommended for Industrial Use	Avoid If…	Key Specifications to Check
Communication Protocol	MODBUS RTU, RS485	Only supports legacy or proprietary protocols	Baud rate, parity, data bits, noise immunity
Display Type	Graphical (128x64 or higher)	Limited to fixed-character displays for complex data	Resolution, backlight type, viewing angle
I/O Compatibility	Isolated inputs, relay outputs	Mismatched signal levels or no surge protection	Signal type, voltage range, isolation rating
Environmental Rating	IP65 or higher, -20°C to +70°C	No ingress protection or narrow temp range	IP rating, operating temperature, humidity tolerance
Power Supply	24V DC, low current draw (<100mA)	Requires external converter or high power	Voltage range, power consumption, efficiency

Expert Insight: When deploying VFD display modules across multiple locations, standardize on a single model or family to simplify maintenance, reduce spare part inventory, and streamline operator training.

Final Recommendations

• Always consult the VFD drive manufacturer’s compatibility list when selecting a display module.
• Request sample units or evaluation kits to test integration before large-scale deployment.
• Ensure firmware upgradability for future feature enhancements or bug fixes.
• Document all configuration settings and communication parameters for quick troubleshooting.
• Partner with suppliers who offer technical support and warranty coverage for industrial applications.

By carefully evaluating communication protocols, display functionality, I/O compatibility, environmental resilience, and power requirements, you can select a VFD display module that enhances system visibility, improves operational efficiency, and supports long-term reliability in demanding environments.

Frequently Asked Questions About VFD Display Modules

Q1: How to Maintain a VFD Display Module?

Proper maintenance of VFD (Vacuum Fluorescent Display) modules is essential for ensuring long-term reliability, optimal performance, and extended service life. These sensitive electronic components require a combination of physical care, environmental control, and software oversight. Below are key maintenance practices:

• Regular Cleaning: Dust and debris can accumulate on the surface and within ventilation areas, impairing heat dissipation and potentially causing overheating. Use a soft, lint-free cloth and isopropyl alcohol to gently clean the display screen and housing. Avoid abrasive cleaners or excessive moisture.
• Inspect Electrical Connections: Periodically check all cables, connectors, and terminal blocks for signs of wear, corrosion, or looseness. Poor electrical contact can lead to flickering displays, data errors, or complete failure.
• Keep Firmware and Software Updated: Manufacturers often release updates to fix bugs, improve interface responsiveness, and enhance compatibility with control systems. Regularly check for firmware upgrades and apply them according to the manufacturer’s instructions.
• Monthly System Checks: Perform functional tests at least once a month to verify that the display accurately reflects real-time parameters such as motor speed, voltage, current, and frequency. Look for anomalies like frozen screens, incorrect readings, or unresponsive buttons.
• Control Environmental Conditions: VFD modules are sensitive to temperature and humidity fluctuations. Operate them in a cool, dry, and well-ventilated environment. Ideal operating temperatures typically range from 0°C to 50°C (32°F to 122°F), unless otherwise specified by the manufacturer.
• Follow Manufacturer Guidelines: Always refer to the official user manual or technical documentation for model-specific maintenance procedures, cleaning recommendations, and safety precautions. Some modules may have sealed enclosures or special handling requirements.

By adhering to these maintenance best practices, users can significantly reduce downtime, prevent premature failures, and ensure consistent operation in industrial, commercial, and automation environments.

Q2: Do VFD Display Modules Have an Average Lifespan?

Yes, VFD display modules typically have an average operational lifespan of **10 to 15 years** under normal operating conditions. However, this duration can vary widely based on several critical factors:

• Operating Environment: High ambient temperatures, excessive humidity, and exposure to dust or corrosive gases can accelerate component degradation, especially in capacitors and driver circuits, significantly shortening lifespan.
• Display Technology: While VFDs themselves are known for durability and brightness, the broader category of display modules includes different technologies:
  • LCD Modules: Generally last 5–8 years due to aging backlights and moisture ingress risks.
  • OLED Modules: Offer longer lifespans (up to 15+ years) with better contrast and lower power consumption but may suffer from burn-in over time.
  • VFDs: Excel in longevity due to their robust construction, resistance to temperature extremes, and excellent visibility in low-light conditions.
• Usage Patterns: Modules subjected to continuous operation or frequent power cycling may degrade faster than those used intermittently.
• Maintenance Practices: Regular cleaning, firmware updates, and prompt replacement of failing components can extend the functional life well beyond the average expectancy.

With proper care, many VFD display modules continue to operate reliably beyond 15 years, making them a cost-effective choice for industrial control panels and automation systems.

Q3: What Are the Key Features of VFD Display Modules?

VFD display modules are designed for clarity, durability, and integration in demanding environments. Their feature set makes them ideal for industrial automation, HVAC systems, and motor control applications. Key features include:

• Real-Time Parameter Display: Capable of showing dynamic data such as motor speed (RPM), input/output voltage, current draw, frequency, and fault codes via alphanumeric or graphical interfaces.
• Modular Design: Enables plug-and-play installation and easy replacement or upgrades without rewiring the entire system. This simplifies maintenance and reduces downtime during repairs.
• Non-Volatile (Retentive) Memory: Stores user settings, configuration data, and operational parameters even after power loss, allowing the system to resume operation with previous settings intact.
• Integrated Communication Interfaces: Equipped with standard ports such as RS-485, Modbus, CAN bus, or Ethernet for seamless integration with PLCs, SCADA systems, and supervisory control networks.
• Wide Input Voltage Range: Supports operation across various power supplies (e.g., 18–30 VDC or 100–240 VAC), enhancing flexibility for global deployment and compatibility with different electrical infrastructures.
• High Visibility & Durability: VFDs offer bright, self-illuminated displays visible in direct sunlight or dark environments, with excellent contrast and viewing angles. They are also resistant to shock, vibration, and temperature extremes.
• User-Friendly Navigation: Many models include keypad interfaces or touchscreen options for intuitive menu navigation, parameter adjustment, and diagnostics.

These features collectively make VFD display modules a preferred solution for monitoring and controlling variable frequency drives in complex industrial ecosystems.

Q4: What’s the Difference Between a VFD Module and a VFD Display?

Although the terms are often used interchangeably, there is a clear functional distinction between a **VFD module** and a **VFD display**:

Aspect	VFD Module	VFD Display
Function	The core control unit that regulates motor speed and torque by adjusting the frequency and voltage supplied to the motor.	A user interface device that visually presents operational data from the VFD module, such as speed, current, frequency, and error codes.
Role in System	Performs active control and power conversion; acts as the "brain" of motor control.	Serves as a monitoring tool; provides feedback and allows user input for configuration.
Components	Includes power electronics (IGBTs, rectifiers, inverters), microcontrollers, and cooling systems.	Comprises a display screen (VFD, LCD, OLED), buttons, communication ports, and sometimes a small processor.
Interdependence	Can operate without a display (in headless mode) using external controllers or preset programs.	Depends entirely on the VFD module for data; cannot control the motor independently.
Installation Location	Typically mounted inside electrical cabinets or enclosures.	Often mounted on control panels for easy access and visibility.

In summary, the VFD module is responsible for controlling the motor, while the VFD display serves as the interface for observing and adjusting that control. Understanding this distinction helps in troubleshooting, system design, and selecting appropriate components for automation projects.