Drinking water and process water treatment

The valve islands Air­Line (Type 8652) and Air­Line SP (Type 8647) offer numer­ous adjustable mon­i­tor­ing and diag­nos­tic func­tions, which improve sys­tem avail­abil­i­ty and process reli­a­bil­i­ty, while at the same time enabling pre­ven­tive main­te­nance. Key infor­ma­tion, e.g. the cur­rent switch­ing sta­tus­es of the pilot and process valves or errors such as cable breaks, is shown to users direct­ly via an inte­grat­ed dis­play. Valve islands com­mu­ni­cate via a range of com­mon field bus pro­to­cols, e.g. EtherNet/IP, Profinet IO and Profibus DP. If a high lev­el of net­work avail­abil­i­ty has to be ensured, the Media Redun­dan­cy Pro­to­col from Profinet IO can be used. An increased lev­el of sys­tem avail­abil­i­ty is addi­tion­al­ly guar­an­teed by up to 64 hot-swap capa­ble valves per island which can be replaced dur­ing live oper­a­tion with­out shut­ting down the sys­tem. As an addi­tion­al safe­ty func­tion, check valves are used in the exhaust chan­nel. They pre­vent the unwant­ed acti­va­tion of valves by pres­sure peaks in the exhaust chan­nel. All these func­tions ensure high process reliability.

Valve island as an electro-pneumatic automation system

With­in the con­text of Indus­try 4.0, valve islands are increas­ing­ly becom­ing elec­tro-pneu­mat­ic automa­tion sys­tems. Type 8647, which is ful­ly inte­grat­ed in the dis­trib­uted I/O sys­tem Simat­ic ET 200SP from Siemens, is def­i­nite­ly set­ting the bench­mark here. It enables fast and seam­less inte­gra­tion both for ini­tial start-up and sub­se­quent mon­i­tor­ing of live oper­a­tion. The exe­cut­ed switch­ing cycles are, for instance, for­ward­ed to the con­trol sys­tem. This offers users the ben­e­fits of pre­ven­tive and wear-opti­mized main­te­nance and less downtime.