AC Power Switching Relay with Wireless Module
AC Power Switching Relay with ZAURA Control
This reference design integrates Zilog’s ZAURA RF 868 MHz Wireless Module onto an AC power switching relay designed to showcase the features and performance of a relaybased switch with AC voltage zero-crossing detection to minimize surge currents. This reference design can be used as a basis for developing systems that can control different power installations.
On its own, without the ZAURA RF Wireless Module attached, the AC power switch functions as a demonstration board, providing current to power the ZAURA RF Wireless Module and relay. However, the AC power switch cannot control load, because the source of the on/off pulses required to perform this operation is generated by the Z8F2480 MCU on the RF Module. In combination, the Power Board with the Module attached, all controlled by a hand-held remote control device, enable RF communication to turn the load on and off.
For purposes of demonstrating RF control, a hand-held ZAURA RF Remote Control device is also included with this reference design. See the Remote Control Operation section on page 7 for a description of this remote control device.
Note: If you wish to develop RF remote control software, Zilog recommends purchasing the ZAURA RF Wireless 868 MHz Module Development Kit, because the hand-held ZAURA RF Remote Control device included with this reference design uses the same hardware and software libraries as this development kit.
This AC Power Switching Relay with ZAURA Control reference design includes the following features:
- 90–240 V AC RMS input voltage range
- Up to 10 A load current
- Less than 2 mA standby current at 120 V AC when in an ON or OFF state
- 868 MHz Wireless Module operating frequency
The AC Power Switching Relay can be used to develop a number of applications; the brief list below offers a few ideas.
- Remote-operated commercial or architectural lighting
- Private lighting with remote control convenience features
- Central lighting control without wiring or infrastructure changes
The AC Power Switch Demonstration Board is simply comprised of the AC Power Switch Base Power Board (Power Board) with Zilog’s ZAURA RF Wireless Module affixed to it, as shown in Figure 1 (the Module is located in the center of the figure). The Power Board is a two-layer surface mount board that provides easy probe access points to all AC Power Switch inputs and outputs, allowing the user to quickly connect and measure electrical characteristics and waveforms. The ZAURA RF Wireless Module is a four-layer board featuring an MCU, an RF transceiver, an antenna and passive components.
The Power Board and attached ZAURA Module are powered from a single-phase AC line with a 90–240 V voltage range. The AC Power Switch Base Power Board provides up to 10 A load current at 240 V AC RMS.
The Board and Module are contained in a housing assembly with a female 3-prong extension cord; see Figure 2.
To continue reading this reference design from Zilog, please follow the link below: