EMERGENCY STOP How SIGMATEK bridged the gap and with the new »HGW« handheld operating device series, is bringing a mobile as well as wireless HMI solution with integrated Safety functions to the market With the »HGW« series, the Salzburg automation technology provider SIGMATEK launches the next generation of mobile handheld operating devices. The HMI panels, which communicate via WLAN, are equipped with a 10.4“ color touch screen and with 1,300 g, they weigh just slightly more than the current cable-connected version; despite the integrated battery pack. The wireless devices give the operator new freedom – they can move within the surroundings of the machines and systems without having to worry about the cable length. In addition to the transfer of function-oriented data, it will be later possible in a second variant to even send Safety data via WLAN. For this purpose, the HMI is equipped with emergency stop and confirmation buttons, as well as a key switch. Safety-relevant data is exchanged over the standard WLAN network using the »Black Channel« principle. ireless is in – not only in the consumer world. In every production hall, cables prove to be notorious trip hazards and can be a cost factor that should not be underestimated. Since if damaged – when driven over for example – can lead to a machine stop or long maintenance times. Operating machines and systems using a mobile HMI device is nothing new. Whereby in the industry, the definition of »mobile« can almost be confusing – after all, though most so-called mobile operating devices may be portable by hand, the action radius is decidedly limited by

Unbound Machine Operation with Safety We have recognized this unsatisfactory situation for many manufacturers. With the new »HGW« series, we are introducing wireless WLAN hand„The »missing link« in the industrial context is held operating devices to the market which will without a doubt, a compact and Safety-oriented be available without and – in a second variant – solution for the reliable, wireless operation of with the much-desired emergency stop function machines and systems“, Franz Aschl, Innovations via radio signal.“ In addition to the transmission Manager from SIGMATEK is sure. „Market-ready...

Emergency Stop Function via WLAN Based on the Black Channel principle, the transmission of Safety-oriented signals via WLAN is problem-free. However, for unrestricted use in the wireless network, there are aspects that should be considered. Such as interruption-free transmission for example. „Above all, the bit error probability of the transfer medium which plays an equally important role in wired devices, is normally higher during wireless transmission“, explains Franz Aschl further. „The bit error probability during wireless transmission is around 10-3 – in comparison, this is improved by two...

emergency stop button (certified according to EN ISO 13850), which reduces the risk of an operating error. If the operating panel is not connected to a machine, system component or robot, this is clearly visible through the »grey«, unlit button. When the mobile HMI is correctly connected or logged in, the emergency stop button lights in red (LED) and thereby clearly indicates that the emergency stop button is functional and the Safety system connected correctly. HMI with a Future Mobile, as well as relocatable machines and system components are a particular challenge for automation technology....