Product Description 

The MiniPWZ II is specially designed for applications in energy producers (for example, in wind power) or for testing load step switches. With the MiniPWZ II, switching operations can occur at an exactly adjustable phase angle. The reference signal can be either the mains frequency (50 Hz) or any sinusoidal alternating voltage. 

Channels and Configuration 

The MiniPWZ II offers up to 9 digital inputs and 9 digital outputs (standard: 0/24 VDC, adjustable for example to 0/5 VDC). The functionality is largely configurable via the firmware. By default, – as described above – 4 inputs and outputs are used for phase-synchronous switching. The remaining inputs can be used, for example, for release signals, while the other outputs can serve to indicate errors. Through the integrated web server, the switching angles and respective operating modes can be individually configured. 

Functionality 

In the example, switching occurs at an angle of 90°. The input signal (pink) can be activated at any time – for example, by a PLC. The output signal (blue) is then activated only when the 90° angle is reached (the yellow signal represents the reference signal). In this operating mode, the output signal is deactivated depending on the input signal; alternatively, deactivation at a specific phase position is also possible.