Rather than wiring limit switches and solenoid valves independently, the purpose of a terminal box is to pre-wire these accessories into a common unit. As a convenience to customers and to reduce electrical installation costs, terminal boxes provide quick installation and a direct connection to a Programmable Logic Controller (PLC).
Synchronized with a slide gate or a diverter to allow push-button control at-the-valve. In particular, KPANs are used to operate valves which are not tied back to a programmable logic controller (PLC). Above the push-buttons on a KPAN, a valve illustration gives instruction on which push-button corresponds with each valve position. For position confirmation, proximity switches or magnetic reed switches must be installed to the valve.
