Valve and motor drivers (PWM)

PR159 series: PWM drivers with two outputs

The modules in the PR159 series drive two high-side switched PWM outputs; only one output is active at a time. The input side (terminals A1 to A5) is galvanically isolated from the outputs and the supply (terminals B1 to B6). Four trimmers on the module (V-max, V-start, Ramp-up and Ramp-down) set the outputs and, on most versions, the ramp rates; turning clockwise increases the value. This lets a hydraulic valve open and close smoothly, for example. The modules run on 18 to 30 V DC, deliver up to 4 A in total and are suitable for 0 to 80 °C; dimensions 45 x 82 mm.

PR181 series: signal conditioners with display

The modules in the PR181 series are set up on the display on the module, using the UP, DOWN and OK buttons. On most versions the lower and upper limits of input and output are set independently, as is the rise and fall rate of the output; the settings of each module are listed on the product page under Setup. With an adjustable rise and fall rate, motors, pumps, valves and hydraulics can be driven smoothly. On versions with an analogue output, that output is galvanically isolated from input and supply to prevent ground loops. New settings are stored through the SAVE menu. The standard DIN rail enclosure measures 45 x 83 mm (board 42.6 x 72 mm); versions with more terminals are wider. Most modules run on 9 to 30 V DC at -25 to 55 °C, non-condensing.

For some conversions there is also a version without display and without galvanic isolation in the PR100 series: it is set up with push buttons and runs on 12 and 24 V DC (operating range 11 to 30 V DC). Where one exists, it is listed on the product page under Other version.

PR505 series: converters with Wi-Fi

The PR505 modules have a built-in Wi-Fi hotspot. Hold button SW1 for about ten seconds and connect a phone, tablet or laptop to change settings or load new firmware. The modules run on 12 and 24 V DC.