Description of the 230Volt 50 Hz RFXPwr module.

The RFXPwr module measures the real used electricity power in steps of 1 Watt per Hour. To calculate the used power the line voltage and the current is measured. The total measured value is transmitted at predefined intervals. The maximum load that can be measured with the standard Current Transformer is 150 Ampere.
The RFXPwr module must be installed in the RFXMeter device. The RFXMeter device has 3 slots for metering modules like the RFXPwr module.

The RFXPwr module consists of:


 Installation:
A Current Transformer must be clamped around 1 wire of the power line and the AC/AC 9V adaptor must be connected to a wall socket. The RFXPwr module measures the power usage and transmits the total measured value at predefined intervals.
The interval of the reporting can be changed by the user from 30 seconds, 1 minute, 6, 12, 15, 30, 45 or 60 minutes.
The address of the RFXPwr can be set by the user so that theoretically up to 256 units can co-exist.
The counter value of the RFXPwr is saved in non-volatile memory of the RFXMeter device when a power loss occurs. The counters are restored when power returns.

The preferred receiver for the RFXPwr data is the RFXCOM X10 receiver. This receiver can receive the full 48 bits data packets. The maximum power that can be measured before the counter rolls over to zero is 16777.215kWh. The 48 bits data packet enables a parity check on the received data.
The Homeseer RFXCOM plug-in supports the RFXPwr.
The Homeseer ACRF plug-in version 1.2.0.3 and up supports the RFXMeter with the RFXCOM receiver only.
The W800 receiver can receive 32 bits and is therefore able to receive the first 32 bits of the data packet. These 32 bits contain the RFXPower unit address and the lower 2 bytes of the measured value.  The maximum power that can be measured before the counter rolls over to zero is then 65.535kWh. A parity check is not possible when the W800 is used and the configuration packets can not be received by the W800.
 

Capabilities: