Description
QEED Single-Phase Power Meter & Isolated V/I Converter
QA-Power-M Single Phase Power Meter & Isolated V/I Converter
The QEED QA-Power-M combines a single-phase TRMS power meter with an isolated voltage / current converter. It measures electrical parameters, provides analogue retransmission, RS485 Modbus RTU communication, alarm contact output and USB datalogging in one compact DIN rail module.
It is suitable for applications requiring local analogue signal conversion and digital energy monitoring at the same time, including photovoltaic systems, energy management panels, high-voltage AC/DC signal conversion, high-current monitoring using external CTs, SCADA, BMS, EMS and IoT systems.
Measurement
Single-phase AC/DC TRMS power
Input
1000Vdc / 600Vac, up to 10A AC/DC
Outputs
RS485, analogue and alarm contact
Datalogging
USB thumb drive with RTC
Overview
QA-Power-M is designed for applications where a single device must measure electrical power and also retransmit isolated analogue signals. It measures current, voltage, power, energy, frequency, power factor, peak values and THD, while providing RS485 Modbus data and programmable analogue output.
The module is useful where operators need both local / analogue signal availability and remote Modbus monitoring. It can be connected to PLC, SCADA, EMS, BMS, datalogger, IoT gateway or IoTWatt 4.0 through RS485 Modbus RTU or analogue input modules.
Positioning: Single-phase AC/DC power meter, isolated V/I converter, RS485 Modbus analyser and USB datalogger in one DIN rail module.
Key Features
Power Meter + Converter
Combines single-phase power measurement with isolated voltage / current signal conversion.
High Voltage Input
Measures up to 1000Vdc or 600Vac, fully configurable through USB.
10A AC/DC Input
Measures up to 10A AC/DC directly, with higher current possible by using external CTs.
RS485 Modbus RTU
Direct Modbus communication to PLC, SCADA, EMS, BMS, gateway and datalogger systems.
Analogue Output
Programmable 0 20mA or 0 10V output for retransmission to analogue systems.
USB Datalogging
Logs data to USB thumb drive in CSV / Excel-importable files with integrated RTC timestamping.
Measured Electrical Parameters
| Measurement Group |
Available Values |
| Current |
IRMS and Ipeak |
| Voltage |
VRMS and Vpeak |
| Power |
Active power W, reactive power VAR and apparent power VA |
| Energy |
Bidirectional energy measurement |
| Power Factor |
Cosφ |
| Frequency |
Frequency measurement |
| Power Quality |
THD, peak voltage and peak current visibility |
Input and Output Functions
| Function |
Specification |
Typical Use |
| Voltage Input |
Up to 1000Vdc / 600Vac, configurable via USB |
High-voltage AC/DC monitoring and conversion |
| Current Input |
Up to 10A AC/DC directly; higher current using external CT |
Current, power and energy measurement |
| Current Output |
0 20mA programmable, maximum load 600Ω |
Analogue retransmission to PLC, BMS, EMS or recorder |
| Voltage Output |
0 10V programmable, minimum load resistance 2kΩ |
Analogue retransmission to monitoring systems |
| RS485 Modbus |
RS485 Modbus RTU on module base or terminal; DIP switch for address and baud rate |
SCADA, PLC, EMS, BMS, IoT gateway and IoTWatt 4.0 integration |
| Contact Output |
Optomos contact, programmable normally-open alarm contact, retransmission or pulse storage |
Alarm, pulse output or event signalling |
Applications
Photovoltaic Systems
Monitor parallel string voltage, AC/DC power and generated energy.
Energy Management
Provide direct RS485 Modbus communication to EMS, SCADA and master Modbus systems.
High Voltage Conversion
Use as a high-voltage AC/DC converter for monitored voltage signals.
High Current Monitoring
Measure higher current circuits by using suitable external current transformers.
Local and Remote Monitoring
Use analogue output locally while sending Modbus data to the supervisory system.
USB Datalogging
Use USB thumb drive storage for CSV / Excel-importable site data logging.
Datalogging Function
QA-Power-M includes USB datalogging using a USB thumb drive. The integrated real-time clock enables timestamped records, and stored files can be imported into Excel for analysis, reporting, troubleshooting and commissioning documentation.
- USB thumb drive datalogging
- CSV / Excel-importable stored files
- Integrated RTC real-time clock
- Useful for commissioning and temporary power monitoring
- Supports both local and remote monitoring requirements
Configuration
QA-Power-M is configured using the free FACILE QA-POWER software through USB. The software allows configuration of measurement type, communication settings, analogue output, alarm contact, data logging and scaling parameters.
- Select RMS or DC measurement behaviour
- Configure Modbus address and baud rate
- Set voltage and current transformation ratios where required
- Configure analogue output range and scaling
- Configure alarm contact behaviour
- Set minimum current threshold
- Set minimum power threshold
- Configure datalogging interval and stored data format
- Restore factory default settings when required
Correction note: The old page referenced FACILE QI-POWER-485. This product should be configured using FACILE QA-POWER because the device is QA-Power-M.
System Integration
QA-Power-M is suitable for integration into industrial monitoring, automation and energy management systems. It provides Modbus RTU data for digital platforms and analogue outputs for conventional control systems.
- Use RS485 Modbus RTU for PLC, SCADA, EMS and BMS integration
- Use analogue output for local controller, recorder or analogue input systems
- Use contact output for alarm, threshold or pulse signalling
- Use USB datalogging for temporary measurement and site verification
- Integrate into IoTWatt 4.0 through RS485 gateway or compatible input modules
Commissioning note: Confirm voltage range, current range, CT/VT ratio, output scaling, alarm contact logic and Modbus settings before energising the monitoring system.
QA-Power-M Supply and Integration
Saturn Pyro supports QEED QA-Power-M power meters and isolated V/I converters for photovoltaic systems, energy management panels, high-voltage AC/DC signal conversion, RS485 Modbus integration, USB datalogging, PLC, SCADA, BMS, EMS and IoTWatt 4.0 projects in Malaysia.
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More detail about Saturn Pyro Sdn Bhd
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Measurement
Single-phase AC/DC TRMS power
Input
1000Vdc / 600Vac, up to 10A AC/DC
Outputs
RS485, analogue and alarm contact
Datalogging
USB thumb drive with RTC
Malaysia
