Smart M-Bus to Ethernet gateway
HWg-PWR is a smart Ethernet gateway for remote energy metering and consumption monitoring. To measure the consumption of water, electricity and other energies, external meters with the M-Bus interface are used.
Up to 3 / 12 / 25 M-Bus meters can be connected to the HWg-PWR unit. Individual meters (electricity meter, water meter, gas meter, heat meter etc.) are produced by third parties and connected via their M-Bus interface.
HWg-PWR is a smart gateway that monitors energy consumption and warns about abnormal values The unit provides a Web interface, charts, SNMP and Modbus/TCP output, data logging, e-mail and SMS alerts, and much more.
Product Parameters
Product Parameters
- Ethernet: RJ45 (100 Mbit)
- WEB:Built-in Web server, charts
- Data input:3 / 12 / 25 external meters equipped with the M-Bus (EN 13757-2) interface
- M-Bus power: Meters powered from HWg-PWR
- M-Bus standards: EN 13757-2 (physical layer) & EN 13757-3 (application layer)
- Variables (data points): Up to 100 different variables from all (max. 25) meters
- M-Bus: Automatic detection of meters and available values
- Digital inputs: 8x Digital Input for 110/230V phase failure detection (senses tripped circuit breakers)
- Data logging: 170,000 values (3 values every 15 minutes = 590 days)
- Power: 110 or 230V AC
- Mechanical: Fits on a DIN rail
- M2M communication protocols: SNMP, XML, Modbus/TCP
- Response to thresholds: SNMP trap, E-mail, SMS (via SMS-GW)
- Portal: HWg-Push protocol, supports
- Graphs: Logging of values with the option to plot graphs
- Counter: Independent counter for periodic consumption readouts (daily, weekly, monthly, annually, ...)
- Report: Periodic e-mailing of measured values
- SMS Gateway: Device can send SMS by external "HWg-SMS-GW" without any software.
- Support for programmers: HWg SDK
Supported software
- HWg-Trigger: Control of other IP devices, alarm redirection to SMS
- HWg-PDMS: Logging, export to MS Excel
- Third-party SNMP software
| Inputs | Power | Web | M2M outputs | |||||||
| M-Bus meters | M-Bus variables | Digital inputs | Modbus/TCP SNMP |
SMS GW | E-mail report | HWg-Push | ||||
| HWg-PWR 3 | 3 | Max 100 | 8x 110/230VAC | 110/230VAC |  |
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| HWg-PWR 12 | 12 | Max 100 | 8x 110/230VAC | 110/230VAC | |
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| HWg-PWR 25 | 25 | Max 100 | 8x 110/230VAC | 110/230VAC | |
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| HWg-PWR | 3 | Max 30 | 3x Dry Contact | 230V | |
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Where to use
Where to use
- External M-Bus meters (third-party products)
- Values available over M-Bus depend on the meter – we recommend to always check the supported values with the manufacturer!
- Support for certified and calibrated meters
- Support for single-phase and polyphase electricity meters
- Support for single-tariff and multi-tariff meters
- Current transformers enable measurements of high currents
- Examples of typically available values:
- Instantaneous power input
- Total consumption
- Line voltage
- Line current
- Power factor (cos φ)
- Flow speed
Pictures
Pictures
Collecting data from 1 to 25 M-Bus electricity meters
- Various energy meters (equipped with the M-Bus interface) are connected to the HWg-PWR unit.
- All values are available to external software over LAN and SNMP.
- Energy consumption details can be viewed using the Web interface or an iPhone or Android app.
Server room: Energy consumption monitoring + phase outage detection
- Up to 25 electricity meters measure the single-phase or three-phase consumption of the cabinets.
- Up to 8 inputs can detect phase outages.
- When a phase fails, a warning can be e-mailed.
- Upon an alarm (phase failure or current out of range), a text message alert can be sent to a mobile phone via an external SMS Gateway.
- Energy consumption data can be connected to any SCADA system (Modbus/TCP) or accessed over SNMP.
Measuring energy consumption with S0 pulses and M-Bus meters
- Modern electricity meters with the M-Bus interface can be connected to HWg-PWR directly.
- Older electricity meters with a S0 pulse output can be connected using a “S0-M-Bus” converter.
- Current consumption charts are available through the HWg-PWR web interface.
- Every day, week or month, HWg-PWR e-mails a report. The e-mail contains a billing statement including KWh and a conversion to currency.
- When the current consumption exceeds or drops below a set threshold, the unit sends an e-mail alert.
Remote energy metering with a central WEB portal
- Various energy meters are connected to a single HWg-PWR unit.
- Each unit has a WEB interface for configuration, viewing logs, etc.
- All consumption data are uploaded to a central portal using the HWg-Push protocol.
- The central portal (e.g. SensDesk) generates detailed analyses and statistics concerning energy consumption.
ST-HW