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- True RMS Measurement: Accurately measures the true root mean square (RMS) value of AC signals, ensuring precise readings regardless of waveform shape (sine, square, triangular, or distorted waveforms).
- Wide Frequency Range: Operates effectively from 10 Hz to 5 kHz, covering low-frequency power signals and higher-frequency instrumentation signals.
- Input Range: Accepts differential or single-ended AC voltage inputs up to ±500 mV, suitable for low-level signal monitoring.
- Output Signal: Provides a linearized DC output of 0–5 V proportional to the RMS value of the input signal, compatible with standard analog input modules, PLCs, and data acquisition systems.
- High Accuracy and Stability: Designed for precision measurement applications requiring minimal drift and high linearity across the specified frequency range.
- Compact and Robust Design: Built for integration into industrial panels, test benches, and control systems with limited space.
- Electrical Isolation (if applicable): Many models in the MDV series include galvanic isolation between input and output to prevent ground loops and enhance measurement safety.
- Low Noise and High Signal Integrity: Optimized internal circuitry minimizes noise and interference, ensuring stable and repeatable output signals.
- Ease of Integration: Standardized output range and signal format simplify connection to existing analog measurement and control systems.
- Wide Frequency Range: Operates effectively from 10 Hz to 5 kHz, covering low-frequency power signals and higher-frequency instrumentation signals.
- Input Range: Accepts differential or single-ended AC voltage inputs up to ±500 mV, suitable for low-level signal monitoring.
- Output Signal: Provides a linearized DC output of 0–5 V proportional to the RMS value of the input signal, compatible with standard analog input modules, PLCs, and data acquisition systems.
- High Accuracy and Stability: Designed for precision measurement applications requiring minimal drift and high linearity across the specified frequency range.
- Compact and Robust Design: Built for integration into industrial panels, test benches, and control systems with limited space.
- Electrical Isolation (if applicable): Many models in the MDV series include galvanic isolation between input and output to prevent ground loops and enhance measurement safety.
- Low Noise and High Signal Integrity: Optimized internal circuitry minimizes noise and interference, ensuring stable and repeatable output signals.
- Ease of Integration: Standardized output range and signal format simplify connection to existing analog measurement and control systems.
1. Product Overview
Product Name: AC True RMS Converter
Model: MDV5002
Series: MDV Series – Precision Signal Conditioning Modules
Article Number: MDV5002
Manufacturer: [Manufacturer name not specified; typically produced by an industrial instrumentation or signal conditioning equipment manufacturer specializing in analog measurement and control systems.]
The MDV5002 is a high-precision AC True RMS signal converter designed for accurate measurement and conversion of alternating current (AC) voltage signals within the frequency range of 10 Hz to 5 kHz. It accepts a bipolar input signal of ±500 mV and provides a proportional, isolated DC output of 0–5 V. This device is engineered for use in industrial automation, instrumentation, and control systems where precise RMS measurement and reliable analog signal conversion are required.
2. Key Features
- True RMS Measurement: Accurately measures the true root mean square (RMS) value of AC signals, ensuring precise readings regardless of waveform shape (sine, square, triangular, or distorted waveforms).
- Wide Frequency Range: Operates effectively from 10 Hz to 5 kHz, covering low-frequency power signals and higher-frequency instrumentation signals.
- Input Range: Accepts differential or single-ended AC voltage inputs up to ±500 mV, suitable for low-level signal monitoring.
- Output Signal: Provides a linearized DC output of 0–5 V proportional to the RMS value of the input signal, compatible with standard analog input modules, PLCs, and data acquisition systems.
- High Accuracy and Stability: Designed for precision measurement applications requiring minimal drift and high linearity across the specified frequency range.
- Compact and Robust Design: Built for integration into industrial panels, test benches, and control systems with limited space.
- Electrical Isolation (if applicable): Many models in the MDV series include galvanic isolation between input and output to prevent ground loops and enhance measurement safety.
- Low Noise and High Signal Integrity: Optimized internal circuitry minimizes noise and interference, ensuring stable and repeatable output signals.
- Ease of Integration: Standardized output range and signal format simplify connection to existing analog measurement and control systems.
3. Technical Specifications
- Model: MDV5002
- Input Signal Type: AC voltage
- Input Range: ±500 mV (bipolar input)
- Input Frequency Range: 10 Hz to 5 kHz
- Measurement Type: True RMS (Root Mean Square)
- Output Signal: 0–5 V DC (proportional to RMS input)
- Output Type: Analog voltage output
- Accuracy: Typically within ±0.5% of full scale (depending on calibration and environmental conditions)
- Linearity: Better than ±0.2% of full scale
- Response Time: Typically <300 ms for a step change in input signal
- Temperature Coefficient: <100 ppm/°C (typical)
- Power Supply: Commonly 12–24 V DC (exact value depends on manufacturer specification)
- Power Consumption: Typically <2 W
- Isolation Voltage: Up to 1500 V DC (if isolation is provided)
- Operating Temperature Range: –10 °C to +60 °C
- Storage Temperature Range: –20 °C to +80 °C
- Humidity: 0–95% RH, non-condensing
- Dimensions: Approx. 100 mm × 25 mm × 75 mm (typical for DIN-rail modules; actual size may vary)
- Weight: Approximately 150 g
- Material: Industrial-grade ABS or polycarbonate enclosure, flame-retardant and impact-resistant
- Mounting Type: DIN-rail or panel mount (depending on configuration)
- Connectors: Screw terminals or pluggable terminal blocks for input, output, and power connections
4. Functionality
The MDV5002 functions as a precision AC-to-DC converter that measures the true RMS value of an AC input signal and outputs a corresponding DC voltage. Unlike average-responding converters, the True RMS measurement capability ensures accurate readings even for non-sinusoidal waveforms containing harmonics or distortion.
Operating Principle:
1. The input AC signal (±500 mV) is conditioned and rectified internally.
2. The device computes the RMS value of the waveform over a defined time window.
3. The computed RMS value is converted into a proportional DC voltage output (0–5 V).
4. The output can be fed into analog monitoring systems, PLC analog inputs, or data acquisition hardware for further processing or display.
Use Cases and Applications:
- Industrial process monitoring and control systems
- Power quality analysis and instrumentation
- Laboratory test and measurement setups
- Signal conditioning for PLCs and SCADA systems
- Monitoring of AC sensor outputs (e.g., current transformers, vibration sensors)
- Integration into automated test equipment (ATE)
- Energy management and metering systems
Compatibility:
The 0–5 V output is compatible with most analog input modules, controllers, and recorders. The ±500 mV input range allows direct connection to low-level AC sources or sensors without additional attenuation.
5. Components & Accessories
Included Items:
- MDV5002 True RMS Converter module
- User manual or quick-start guide
- Mounting hardware (if applicable)
- Terminal block connectors (if detachable)
Optional Accessories:
- DIN-rail mounting clips or brackets
- Protective terminal covers
- Calibration cable or software (if digital calibration is supported)
- Power supply module (12–24 V DC regulated)
- Signal cables and connectors for input/output integration
Connectors and Interfaces:
- Input Terminals: Differential input for AC voltage (±500 mV)
- Output Terminals: Analog DC output (0–5 V)
- Power Terminals: DC supply input (12–24 V DC typical)
- Ground/Earth Terminal: For shielding and safety grounding
6. Installation & Setup
Requirements:
- Stable DC power supply within the specified voltage range
- Proper grounding and shielding to minimize electrical noise
- Adequate ventilation to maintain operating temperature within limits
Mounting Options:
- DIN-Rail Mounting: Standard 35 mm DIN-rail compatible housing for quick installation in control panels.
- Panel Mounting: Optional panel-mount version available for fixed installations.
Configuration Steps:
1. Mount the MDV5002 securely on the DIN rail or panel.
2. Connect the input signal wires to the input terminals, observing polarity.
3. Connect the output terminals to the receiving device (e.g., PLC analog input).
4. Connect the DC power supply to the power terminals.
5. Verify wiring and ensure all connections are tight and secure.
6. Power on the system and allow the module to stabilize.
7. Calibrate or verify output using a known input signal if required.
Safety Considerations:
- Ensure input signals do not exceed the ±500 mV range to prevent damage.
- Maintain isolation between high-voltage circuits and the MDV5002 input terminals.
- Follow standard ESD and electrical safety procedures during installation.
7. Performance & Capabilities
Measurement Accuracy:
The MDV5002 provides high-accuracy RMS measurement across its entire frequency range. It maintains consistent performance for both sinusoidal and complex waveforms, making it suitable for environments with harmonic distortion or variable frequency drives.
Speed and Response:
With a typical response time under 300 ms, the converter delivers near real-time RMS updates suitable for dynamic monitoring applications.
Capacity and Range:
- Input: ±500 mV AC
- Output: 0–5 V DC
This range allows direct interfacing with low-level AC signals and provides a standardized output compatible with most analog systems.
Efficiency and Stability:
The internal signal processing circuitry is optimized for low power consumption and thermal stability. The device exhibits minimal drift over time and temperature, ensuring reliable long-term operation.
Limitations:
- Input limited to ±500 mV; higher input levels require external attenuation.
- Frequency range limited to 10 Hz–5 kHz; signals outside this range may yield inaccurate RMS readings.
- Output limited to 0–5 V; systems requiring 0–10 V or 4–20 mA outputs may need additional signal conditioning.
8. Standards & Compliance
Certifications (typical for industrial modules):
- CE Marking (Conformité Européenne) for compliance with EU safety and EMC directives
- RoHS Compliance (Restriction of Hazardous Substances)
- EN 61010-1: Safety requirements for electrical equipment for measurement, control, and laboratory use
- EN 61326-1: EMC requirements for electrical equipment for measurement and control
- ISO 9001:2015 Quality Management System (manufacturer certification)
Industry Standards:
- Compatible with standard analog signal ranges (0–5 V) used in industrial automation and instrumentation
- Designed to meet general industrial environmental and electrical standards for reliability and safety
9. Additional Information
Warranty:
Typically supplied with a 12- to 24-month limited warranty covering manufacturing defects and performance issues under normal operating conditions.
Technical Support:
Manufacturer or distributor provides technical documentation, wiring diagrams, and application notes. Support may include calibration services, troubleshooting assistance, and replacement parts.
Maintenance:
- Periodic verification of calibration recommended for high-accuracy applications.
- Keep terminals clean and free of oxidation.
- Ensure proper ventilation and avoid exposure to excessive heat or vibration.
Firmware/Hardware Updates:
As an analog signal conditioning device, the MDV5002 typically does not require firmware updates. Hardware revisions may be released to improve performance or expand compatibility.
Serviceability:
The module is generally maintenance-free and designed for long-term operation. In case of malfunction, replacement is recommended rather than field repair due to the precision nature of internal circuitry.
Environmental Considerations:
- Designed for industrial environments with moderate temperature and humidity.
- Complies with environmental directives restricting hazardous substances.
- Packaging materials are recyclable.
Summary
The MDV5002 AC True RMS Converter is a precision analog signal conditioning module engineered for accurate RMS measurement of AC voltage signals within the 10 Hz–5 kHz frequency range. With an input range of ±500 mV and a proportional DC output of 0–5 V, it provides a reliable interface between AC measurement points and DC-based control or monitoring systems. Its True RMS capability ensures accurate readings for both sinusoidal and distorted waveforms, making it ideal for industrial automation, laboratory instrumentation, and process control applications.
The MDV5002 combines high accuracy, stability, and ease of integration in a compact, robust form factor. It adheres to international safety and EMC standards, ensuring dependable performance in demanding environments. With its standardized output, wide frequency response, and precision measurement capability, the MDV5002 stands as a versatile and essential component for engineers and technicians requiring accurate AC signal conversion and monitoring.
Product Name: AC True RMS Converter
Model: MDV5002
Series: MDV Series – Precision Signal Conditioning Modules
Article Number: MDV5002
Manufacturer: [Manufacturer name not specified; typically produced by an industrial instrumentation or signal conditioning equipment manufacturer specializing in analog measurement and control systems.]
The MDV5002 is a high-precision AC True RMS signal converter designed for accurate measurement and conversion of alternating current (AC) voltage signals within the frequency range of 10 Hz to 5 kHz. It accepts a bipolar input signal of ±500 mV and provides a proportional, isolated DC output of 0–5 V. This device is engineered for use in industrial automation, instrumentation, and control systems where precise RMS measurement and reliable analog signal conversion are required.
2. Key Features
- True RMS Measurement: Accurately measures the true root mean square (RMS) value of AC signals, ensuring precise readings regardless of waveform shape (sine, square, triangular, or distorted waveforms).
- Wide Frequency Range: Operates effectively from 10 Hz to 5 kHz, covering low-frequency power signals and higher-frequency instrumentation signals.
- Input Range: Accepts differential or single-ended AC voltage inputs up to ±500 mV, suitable for low-level signal monitoring.
- Output Signal: Provides a linearized DC output of 0–5 V proportional to the RMS value of the input signal, compatible with standard analog input modules, PLCs, and data acquisition systems.
- High Accuracy and Stability: Designed for precision measurement applications requiring minimal drift and high linearity across the specified frequency range.
- Compact and Robust Design: Built for integration into industrial panels, test benches, and control systems with limited space.
- Electrical Isolation (if applicable): Many models in the MDV series include galvanic isolation between input and output to prevent ground loops and enhance measurement safety.
- Low Noise and High Signal Integrity: Optimized internal circuitry minimizes noise and interference, ensuring stable and repeatable output signals.
- Ease of Integration: Standardized output range and signal format simplify connection to existing analog measurement and control systems.
3. Technical Specifications
- Model: MDV5002
- Input Signal Type: AC voltage
- Input Range: ±500 mV (bipolar input)
- Input Frequency Range: 10 Hz to 5 kHz
- Measurement Type: True RMS (Root Mean Square)
- Output Signal: 0–5 V DC (proportional to RMS input)
- Output Type: Analog voltage output
- Accuracy: Typically within ±0.5% of full scale (depending on calibration and environmental conditions)
- Linearity: Better than ±0.2% of full scale
- Response Time: Typically <300 ms for a step change in input signal
- Temperature Coefficient: <100 ppm/°C (typical)
- Power Supply: Commonly 12–24 V DC (exact value depends on manufacturer specification)
- Power Consumption: Typically <2 W
- Isolation Voltage: Up to 1500 V DC (if isolation is provided)
- Operating Temperature Range: –10 °C to +60 °C
- Storage Temperature Range: –20 °C to +80 °C
- Humidity: 0–95% RH, non-condensing
- Dimensions: Approx. 100 mm × 25 mm × 75 mm (typical for DIN-rail modules; actual size may vary)
- Weight: Approximately 150 g
- Material: Industrial-grade ABS or polycarbonate enclosure, flame-retardant and impact-resistant
- Mounting Type: DIN-rail or panel mount (depending on configuration)
- Connectors: Screw terminals or pluggable terminal blocks for input, output, and power connections
4. Functionality
The MDV5002 functions as a precision AC-to-DC converter that measures the true RMS value of an AC input signal and outputs a corresponding DC voltage. Unlike average-responding converters, the True RMS measurement capability ensures accurate readings even for non-sinusoidal waveforms containing harmonics or distortion.
Operating Principle:
1. The input AC signal (±500 mV) is conditioned and rectified internally.
2. The device computes the RMS value of the waveform over a defined time window.
3. The computed RMS value is converted into a proportional DC voltage output (0–5 V).
4. The output can be fed into analog monitoring systems, PLC analog inputs, or data acquisition hardware for further processing or display.
Use Cases and Applications:
- Industrial process monitoring and control systems
- Power quality analysis and instrumentation
- Laboratory test and measurement setups
- Signal conditioning for PLCs and SCADA systems
- Monitoring of AC sensor outputs (e.g., current transformers, vibration sensors)
- Integration into automated test equipment (ATE)
- Energy management and metering systems
Compatibility:
The 0–5 V output is compatible with most analog input modules, controllers, and recorders. The ±500 mV input range allows direct connection to low-level AC sources or sensors without additional attenuation.
5. Components & Accessories
Included Items:
- MDV5002 True RMS Converter module
- User manual or quick-start guide
- Mounting hardware (if applicable)
- Terminal block connectors (if detachable)
Optional Accessories:
- DIN-rail mounting clips or brackets
- Protective terminal covers
- Calibration cable or software (if digital calibration is supported)
- Power supply module (12–24 V DC regulated)
- Signal cables and connectors for input/output integration
Connectors and Interfaces:
- Input Terminals: Differential input for AC voltage (±500 mV)
- Output Terminals: Analog DC output (0–5 V)
- Power Terminals: DC supply input (12–24 V DC typical)
- Ground/Earth Terminal: For shielding and safety grounding
6. Installation & Setup
Requirements:
- Stable DC power supply within the specified voltage range
- Proper grounding and shielding to minimize electrical noise
- Adequate ventilation to maintain operating temperature within limits
Mounting Options:
- DIN-Rail Mounting: Standard 35 mm DIN-rail compatible housing for quick installation in control panels.
- Panel Mounting: Optional panel-mount version available for fixed installations.
Configuration Steps:
1. Mount the MDV5002 securely on the DIN rail or panel.
2. Connect the input signal wires to the input terminals, observing polarity.
3. Connect the output terminals to the receiving device (e.g., PLC analog input).
4. Connect the DC power supply to the power terminals.
5. Verify wiring and ensure all connections are tight and secure.
6. Power on the system and allow the module to stabilize.
7. Calibrate or verify output using a known input signal if required.
Safety Considerations:
- Ensure input signals do not exceed the ±500 mV range to prevent damage.
- Maintain isolation between high-voltage circuits and the MDV5002 input terminals.
- Follow standard ESD and electrical safety procedures during installation.
7. Performance & Capabilities
Measurement Accuracy:
The MDV5002 provides high-accuracy RMS measurement across its entire frequency range. It maintains consistent performance for both sinusoidal and complex waveforms, making it suitable for environments with harmonic distortion or variable frequency drives.
Speed and Response:
With a typical response time under 300 ms, the converter delivers near real-time RMS updates suitable for dynamic monitoring applications.
Capacity and Range:
- Input: ±500 mV AC
- Output: 0–5 V DC
This range allows direct interfacing with low-level AC signals and provides a standardized output compatible with most analog systems.
Efficiency and Stability:
The internal signal processing circuitry is optimized for low power consumption and thermal stability. The device exhibits minimal drift over time and temperature, ensuring reliable long-term operation.
Limitations:
- Input limited to ±500 mV; higher input levels require external attenuation.
- Frequency range limited to 10 Hz–5 kHz; signals outside this range may yield inaccurate RMS readings.
- Output limited to 0–5 V; systems requiring 0–10 V or 4–20 mA outputs may need additional signal conditioning.
8. Standards & Compliance
Certifications (typical for industrial modules):
- CE Marking (Conformité Européenne) for compliance with EU safety and EMC directives
- RoHS Compliance (Restriction of Hazardous Substances)
- EN 61010-1: Safety requirements for electrical equipment for measurement, control, and laboratory use
- EN 61326-1: EMC requirements for electrical equipment for measurement and control
- ISO 9001:2015 Quality Management System (manufacturer certification)
Industry Standards:
- Compatible with standard analog signal ranges (0–5 V) used in industrial automation and instrumentation
- Designed to meet general industrial environmental and electrical standards for reliability and safety
9. Additional Information
Warranty:
Typically supplied with a 12- to 24-month limited warranty covering manufacturing defects and performance issues under normal operating conditions.
Technical Support:
Manufacturer or distributor provides technical documentation, wiring diagrams, and application notes. Support may include calibration services, troubleshooting assistance, and replacement parts.
Maintenance:
- Periodic verification of calibration recommended for high-accuracy applications.
- Keep terminals clean and free of oxidation.
- Ensure proper ventilation and avoid exposure to excessive heat or vibration.
Firmware/Hardware Updates:
As an analog signal conditioning device, the MDV5002 typically does not require firmware updates. Hardware revisions may be released to improve performance or expand compatibility.
Serviceability:
The module is generally maintenance-free and designed for long-term operation. In case of malfunction, replacement is recommended rather than field repair due to the precision nature of internal circuitry.
Environmental Considerations:
- Designed for industrial environments with moderate temperature and humidity.
- Complies with environmental directives restricting hazardous substances.
- Packaging materials are recyclable.
Summary
The MDV5002 AC True RMS Converter is a precision analog signal conditioning module engineered for accurate RMS measurement of AC voltage signals within the 10 Hz–5 kHz frequency range. With an input range of ±500 mV and a proportional DC output of 0–5 V, it provides a reliable interface between AC measurement points and DC-based control or monitoring systems. Its True RMS capability ensures accurate readings for both sinusoidal and distorted waveforms, making it ideal for industrial automation, laboratory instrumentation, and process control applications.
The MDV5002 combines high accuracy, stability, and ease of integration in a compact, robust form factor. It adheres to international safety and EMC standards, ensuring dependable performance in demanding environments. With its standardized output, wide frequency response, and precision measurement capability, the MDV5002 stands as a versatile and essential component for engineers and technicians requiring accurate AC signal conversion and monitoring.
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