Pilot Operated 2-Port Solenoid Valve/ Zero ... - SMC Pneumatics

Glossary of TermsPressure Terminology1. Maximum operating pressure differentialThe maximum pressure differential (the difference betweenthe inlet and outlet pressure) which is allowed for operation,with the valve closed or open. When the outlet pressure is0 MPa, this becomes the maximum operating pressure.2. Minimum operating pressure differentialThe minimum pressure differential (the difference between theinlet pressure and outlet pressure) required to keep the mainvalve stably operated.3. Maximum system pressureThe maximum pressure that can be applied inside the pipelines.(Line pressure) [The pressure differential of the solenoid valveportion must be less than the maximum operating pressure differential.]Others1. MaterialNBR: Nitrile rubberFKM: Fluoro rubber – Product name: Viton ® , Dai-el ® , etc.EPDM: Ethylene propylene rubber2. Oil-free treatmentThe degreasing and washing of wetted parts.3. Passage symbolIn the JIS symbol ( ) IN and OUT are in a blocked condition( ), but actually in the case of reverse pressure (OUT>IN), there is a limit to the blocking.( ) is used to indicate that blocking of reverse pressure is notpossible.4. Proof pressureThe pressure the valve must be withstand without a drop in performanceafter holding for 1 minute under the prescribed pressure(static pressure) and returning to the operating pressurerange. [Value under the prescribed conditions]Electrical Terminology1. Apparent power (VA)Volt-ampere is the product of voltage (V) and current (A). Powerconsumption (W): For AC, W = V·A·cosθ. For DC, W = V·A.Note) cosθ shows power factor. cosθ = 0.62. Surge voltageA high voltage which is momentarily generated by shutting offthe power in the shut-off area.3. EnclosureA degree of protection defined in the “JIS C 0920: Waterprooftest of electric machinery/appliance and the degree of protectionagainst the intrusion of solid foreign objects”.IP65: Dusttight, Water-jet-proof“Water-jet-proof” means that no water intrudes inside anequipment that could hinder from operating normally by meansof applying water for 3 minutes in the prescribed manner. Takeappropriate protection measures, since a device is not usable inan environment where a droplet of water is splashed.12