Powertech makes safety switches with trip indication & communication card has solved the problem arises with traditional safety switches it was difficult to trace the actuated switch as these switches are placed far away from each other as well as from the control room. Powertech offers these switches with communication card so that operator can easily locate the actuated switch & can give instruction to the field person accordingly. Card inside these switches is assigned with specific address code.
The system consist of two part
Signals from all the field safety switches with communication card is given to the trip indication unit places in the control room, when ever particular switch is operated the receives to the indication systems changes & displays the particular switch on display of the unit. The indication unit changes its o/p signal from no to nc whenever any fault condition occurs. This signal is further can take for interlocking purpose