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8: Power and energy metering
The device allows for the active power and energy consumption mon-
itoring. Data is sent to the main Z-Wave controller, e.g. Home Center.
Measuring is carried out by the most advanced microcontroller tech-
nology, assuring maximum accuracy and precision (+/- 1% for loads
greater than 10W).
Electric active power – power that energy receiver is changing into
a work or a heat. The unit of active power is Watt [W].
Power measurement can contain mains voltage fluctu-
i
ations within +/- 10%.
Electric energy – energy consumed by a device through a time pe-
riod. Consumers of electricity in households are billed by suppli-
ers on the basis of active power used in given unit of time. Most
commonly measured in kilowatt-hour [kWh]. One kilowatt-hour is
equal to one kilowatt of power consumed over period of one hour,
1kWh = 1000Wh.
Resetting consumption memory:
1. Quickly, three times click, then press and hold one of the buttons
to enter the menu.
2. Release button when the device glows green.
3. Quickly click the button to confirm.
4. Device will blink two times green to confirm.
The device stores periodically (every hour) the con-
i
sumption data in the device memory. Disconnecting
the module from the power supply will not erase stored
energy consumption data.
Changing the device operating mode (Single/Double)
i
resets energy consumption memory.
poWer anD energy meterIng
17
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