1836 results found
    1. Specialist seminar in accordance with NIV for holders of an installation permit

      Specialist seminar in accordance with NIV for holders of an installation permit

      The NIV specialist seminars offer you the opportunity to keep your knowledge of electrical safety, standards and regulations up to date. We have interesting topics ready for you. The following topics are covered in the seminars: - Stray currents in agricultural operations - Emergency power supply - Photovoltaic system: Checking during commissioning and performance monitoring - Voltage quality in PV systems - Checking AC electric charging stations - Device testing for the practitioner (live check)

    2. Speed and frequency monitor UH 6937

      Speed and frequency monitor UH 6937

      Safe, sensorless drive monitoring With the speed and frequency monitor UH 6937 from the SAFEMASTER S Series, DOLD offers an efficient, economic solution for safe, sensorless drive monitoring. Monitoring the output frequency of traction converters is just one of the many different ways to use this component. In case of over- or underfrequency, violation of the set window range or wrong direction of rotation the frequency monitor shuts off safely, proving its benefit over frequency converters with integrated safety functions in any application where simplicity, flexibility, and safety are required. As an additional protective measure, the device can be adapted to an application by pressing just a few buttons. With the appropriate wiring, the device can offer the safety functions STO (safe torque off), SOS (safe operation stop), SLS (safely limited speed), SSM (safe speed monitoring), SSR (safe speed range) and SDI (safe direction) in accordance with EN 61800-5-2. With the help of ergonomically shaped buttons on the front, and a lit LCD display, you can quickly and easily access parameters relevant for the application, such as monitoring functions, delay times, and frequency ranges for up to four operating modes – all without a PC.

    3. Speed and standstill monitor UH 5947

      Speed and standstill monitor UH 5947

      More than just drive monitoring Regardless of whether the set-up operation must be monitored safely, protection via speed limitation is needed or a safety gate is released after detection of standstill - the speed and standstill monitor UH 5947 of the SAFEMASTER S series is the right choice for your application. The device can be operated via the 4 buttons on the front and the LCD display, thus enabling simple parameterisation. For example, the encoder type, speed limits per operating mode and delay times can be flexibly adapted to your application. During operation, the current speed values can be read directly at any time, which in particular makes commissioning easier. To prevent manipulation, the configuration can be protected against unintentional changes by means of a parameter lock after commissioning. For multiple use, the configuration can easily be transferred from unit to unit via interface. The device status or the current speed can further be processed by a control system via a semiconductor signal output. The speed and standstill monitor UH 5947 covers the combined application of encoder signals and PNP or NPN sensors. Alternatively, NAMUR sensor technology can be used as a device variant. The device can be used in temperature ranges from -20 to +60 degrees Celsius and up to heights of 4000 metres.