Operating cum Indication panels (O & I) are critically related to railway signaling system. They are used to reliably display the status of various signaling elements, so that route selection and line clearance operation can be performed without any ambiguity. Domino panels from DES are fabricated out of large number of small sized dominos in matrix formation, each of them being independent module. They offer features of utmost importance for signaling operation as listed below:
Side view of Control Panel (with provision of Leg space for the operator & faceplate inclination angle of 30o) & Side view of Control Panel (without provision of Leg space for the operator & faceplate inclination angle of 60o)
Showing panel under operation
A domino is a mini sized independent module having separate power supply and inputs. Its main building block is rectangular and is made of moulded Nylon having a honeycomb inner structure divided into a number of run-through chambers for holding the panel elements like LED’s, switches etc. and there connecting leads which ensures low loss electrical path.
Each domino has its own panel of duly matched size and it is clip fitted at the front of the nylon block. The PCB for the module is fitted at the back plane of the same block. The multi pin connector of PCB is soldered to the members of the respective wire groups whose other ends are crimped to rigidly fitted terminals or connectors already wired to relay racks.
A domino consists of easy to dismantle parts like nylon block and the PCB with connector and a domino module itself is easily detachable from the panel built out of arrays of dominos, without disturbing the neighboring members.