Description
QEED Universal Current / Voltage Converter
QE-CURRENT-485 Universal Current and Voltage Converter & Analyser
The QEED QE-CURRENT-485 is a universal all-in-one current and voltage converter and analyser for electrical panels. It allows one module to interface with many types of isolated current and voltage sensors, convert the measured signal, and transmit the data through RS485 Modbus RTU.
The module supports Rogowski probes, 1A / 5A current transformers, ±10Vpk or ±1Vpk current / voltage transformers, 333mV current transformers, 100mA AC/DC current transducers and Hall effect sensors. It also includes a temperature input for PT100 or NTC probes.
Universal Input
Rogowski, CT, Hall sensor, voltage / current transducer
Communication
RS485 Modbus RTU
Analogue Output
0...10V / 0...20mA configurable
Mounting
1 DIN wide module for panels
Overview
QE-CURRENT-485 is designed for applications where different current or voltage sensor types must be connected to a common monitoring, control or automation system. Instead of using different converters for different sensors, this module provides one flexible interface for AC/DC current, AC/DC voltage and temperature measurement.
It is suitable for distribution panels, transformer stations, power factor correction panels, purification facilities, paper mills, steel mills, electrical motor monitoring and industrial process applications where current, voltage, temperature and waveform-related values need to be measured and transmitted.
Important note: QE-CURRENT-485 requires an isolated primary current or voltage sensor. The device is intended as an interface and analyser for isolated sensors, not as a direct high-voltage or high-current input device.
Key Features
Universal Sensor Interface
Connects to Rogowski probes, CTs, voltage sensors, Hall sensors and current transducers.
RS485 Modbus RTU
Provides serial output for PLC, SCADA, EMS, BMS, gateway and industrial IoT systems.
Configurable Analogue Output
0...10V or 0...20mA output can be configured according to the required measurement value.
Digital Output
Dry contact digital output, suitable for alarm or status signalling applications.
Temperature Input
Supports PT100 2/3-wire or NTC temperature probes for panel or process temperature monitoring.
Advanced Analyser Version
The QE-CURRENT-485-H version adds THD, Ipeak and harmonic analysis up to the 63rd.
Supported Sensor Inputs
| Input Type |
Supported Sensor / Signal |
Typical Use |
| Rogowski Probe |
Rogowski current probes |
Large current measurement, retrofit current monitoring |
| Current Transformer |
CT secondary 1A / 5A |
Standard electrical panel current measurement |
| Voltage Output CT |
333mV secondary |
Low-voltage output CT applications |
| Current / Voltage Transformer |
±10Vpk or ±1Vpk secondary |
Isolated current or voltage measurement |
| Current Transducer |
100mA AC / DC secondary |
AC/DC transducer signal conversion |
| Hall Effect Sensor |
Hall sensor with ±15Vdc supply support |
AC/DC current measurement, non-standard current sensors |
| Temperature Probe |
PT100 2/3-wire or NTC 10kΩ / 100kΩ |
Panel temperature, transformer bay or equipment temperature monitoring |
Available Measurements
QE-CURRENT-485 provides current or voltage measurements depending on the selected input configuration. The same type of measurements can be associated with voltage values when configured for voltage measurement.
| Measurement Group |
Available Values |
| AC/DC Current or Voltage |
RMS, DC, AC, minimum, average and maximum values |
| Charge Quantity |
Ah on RMS, DC and AC values |
| Frequency |
Frequency measurement |
| Crest Factor |
Crest factor measurement |
| Temperature |
Temperature measurement from PT100 or NTC probe |
| Resistance |
Resistance measurement for temperature probe configuration |
| Advanced - H Version |
Ipeak, THD and harmonic analysis up to the 63rd |
Outputs and Communication
| Output |
Specification |
Purpose |
| RS485 Modbus RTU |
Serial communication output |
PLC, SCADA, EMS, BMS, gateway and IoT integration |
| Analogue Output |
0...10V / 0...20mA configurable |
Transmit selected measurement to analogue input systems |
| Digital Output |
Dry contact, 50mA max, 30Vdc |
Alarm or status output |
Technical Specifications
| Parameter |
Specification |
| Power Supply |
10 to 30 Vdc, with reverse polarity and over-temperature protection |
| Absorption |
2.5 VA max |
| Protection Index |
IP20 |
| Sampling Rate |
6400 Hz at 50 Hz |
| Analogue Output Accuracy |
< 0.1% F.S. |
| Baud Rate |
1200 to 115200 baud, standard 9600 |
| Working Temperature |
-10°C to +60°C |
| Storage Temperature |
-40°C to +85°C |
| Humidity |
10% to 90%, non-condensing |
| Dimensions |
93 x 17.7 x 68.3 mm, terminals excluded |
| Weight |
55g |
| Case |
PBT, grey |
Version Comparison
| Version |
Description |
Measurements |
| QE-CURRENT-485 |
Current / voltage converter with analogue output and RS485 Modbus RTU |
RMS, AC, DC, average, minimum, maximum, frequency, crest factor, temperature and resistance |
| QE-CURRENT-485-H |
Current / voltage converter and analyser with advanced analysis functions |
All basic measurements plus Ipeak, THD, harmonic analysis up to 63rd and internal module temperature |
Configuration
The module can be configured using FACILE QE-CURRENT-485 software or through RS485 Modbus. The software allows configuration of communication parameters, input type, output scaling and measurement settings.
- Configuration through FACILE QE-CURRENT-485 software
- RS485 Modbus communication for integration and parameter access
- DIP switch for baud rate and address setting
- LED indicators for power, communication, TX, RX and digital output status
- Optional T-BUS connection for power and communication across multiple modules
Software note: Java may be required on the PC for FACILE software operation, depending on the software version used.
System Integration
QE-CURRENT-485 can be used in monitoring and automation systems where different current or voltage sensor types must be connected into a Modbus network. It is suitable for PLC, SCADA, EMS, BMS, data logger, IoT gateway and IoTWatt 4.0 integration.
- Convert multiple current / voltage sensor types into Modbus RTU data
- Transmit selected measurements through analogue output
- Use digital output for alarm or threshold indication
- Monitor transformer, motor, panel or utility current values
- Support AC/DC current and voltage monitoring applications
QEED QE-CURRENT-485 Supply and Integration
Saturn Pyro supports QEED QE-CURRENT-485 universal current and voltage converters for industrial monitoring, energy management, power quality, automation, sensor integration, RS485 Modbus and IoTWatt 4.0 projects in Malaysia.
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