5. Operation
Three types of button presses are defined. A short button press is less than 500ms, a medium button press is 500ms to 2 seconds, and
a long press is greater than 3 seconds. In cases where more than one short button press is required, there may be no more than two
seconds between each press.
5.1 Outlet Behavior
5.1.1 Remote Control
The ZigBee smart outlet reference design utilizes a 15A controllable relay to manually or remotely toggle power to a device connected
to the front female outlet of the device. If it receives an “on” command from the gateway it will close the relay contact to supply power to
the load. If it receives an “off” command from the gateway it will open the relay contact to prevent power to the load. When the outlet
changes state from off to on the red LED will turn on for one second. When the outlet changes state from on to off the red LED will turn
on for 250 ms.
5.1.2 Manual Control
The state of the outlet may be toggled with medium press of the button. When the outlet changes state from off to on the red LED will
turn on for one second. When the outlet changes state from on to off the red LED will turn on for 250 ms.
5.1.3 Overload Protection and Indication
The switch features current and thermal overload protection and indication. If current or thermal overload is detected the outlet will disa-
ble power. For current overload indication the red LED will blink 250 ms on and 750 ms off, for two minutes. For thermal overload indi-
cation the red LED will blink 250 ms on and 250 ms off, for two minutes. If the overload condition is still present after the two minute
indication, the cycle will repeat.
5.1.4 AC Power Sensing and Energy Measurements
The reference design uses a Cirrus Logic CS5463 power/energy IC is used to measure various attributes of the mains power input.
While the device provides an array of attributes, the following data is collected by this reference design as they are relevant for a low-
cost, smart outlet:
• RMS Voltage
• RMS Current
• Active Power
• AC Alarms Mask
• AC Voltage Overload
• AC Current Overload
• AC Active Power Overload
UG171: ZigBee
®
Smart Outlet Reference Design (RD-0051-0201) Kit User's Guide
Operation
silabs.com
| Smart. Connected. Energy-friendly.
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