Product Description 

The MiniPWZ II is specifically designed for applications in energy producers (for example, in wind power) or for testing load stage switches. With the MiniPWZ II, switching operations can occur at a precisely adjustable phase angle. Either the mains frequency (50 Hz) or any sinusoidal alternating voltage can be used as a reference signal. 

Channels and Configuration 

The MiniPWZ II offers up to 9 digital inputs and 9 digital outputs (standard: 0/24 VDC, customizable 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-synchronized switching. The remaining inputs can be used, for example, for release signals, while the other outputs can signal errors. Through the integrated web server, the turn-on and turn-off angles as well as the respective operating modes can be configured individually. 

Photo: Example 1: Mode 1, Turn-on Angle 90°

Photo: Example 2: Mode 2, Turn-on Angle 90°, Turn-off Angle 90°

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 reaching the 90° angle (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.