1) Overall Gains:
Solenoid valves utilized in air manifolds can be immediate acting or pilot worked. On account of an immediate acting solenoid valve, the loop demonstrations legitimately on the valve spool to activate it. On account of a pilot worked solenoid valve, it utilizes framework pneumatic force as a pilot to activate the spool. Both have been being used for a long time and each has its advantages. In any case, for some, OEM's that are as yet utilizing direct acting solenoid valves in their pneumatic manifolds, it may be beneficial to think about moving to pilot activated valves to ease establishment, decrease impression, set aside cash, and permit fieldbus correspondence.
2) Higher Cv:
A straightforward 6-station pneumatic complex with direct acting solenoids was enhanced by using it with a progressively reduced complex that used pilot worked solenoid valves. A set-up utilizing the Numatics 503 arrangement, as it had fundamentally the same stream qualities to the complex they had been utilizing for a considerable length of time was arrived upon. At last, the machine manufacturer understood a simpler establishment, opened up important space on the machine control board, and got a good deal on the complex itself, all the while improving execution. Reason being, the more up-to-date pilot worked 503 Series valves have a higher Cv and are intended for longer life.
3) Easy Configuration:
Only a single cable is required to be brought to the manifold. The Numatics 503 Series takes care of this with an internal pin configuration that requires just a single 25 pin board connected to the end-plate and it is all that is required to send a signal to any of the valves in the manifold. The direct acting solenoid required a separate cable to each of the valves in question which is rather cumbersome.
4) Reduced Footprint:
The footprint was significantly reduced by 30% with the newer 503 design because of the rectifications in the valves internal designs. Now the new and smaller valve can eject the same amount of flow thanks to the revised circuitry in the valve that too with a lower footprint of Cv 1.0 as compared to that of Cv 1.2 with the direct acting solenoid.
5) Reduced Cost:
The leaner and compact valve design gave one more reason to rejoice with the lower cost that was due to less manufacturing entailment that was not required with improvements in design assistance. Since cables were not required to be terminated on the valve manifold, it reduced cost usages considerably, as was not the case with direct acting solenoid.
6) Fieldbus Communication Protocols:
A pilot operated solenoid valve allows for future use of field bus communications protocols such as DeviceNet, Ethernet/IP, PROFINET and EtherCAT that offers considerable cost savings and strong diagnostic capabilities.
Thus the end result is a cleaner looking machine accompanied by enhanced performance with pilot operated solenoid valves including tremendous cost savings, that leads to significant advantages in comparison to the direct acting solenoid valves.