Valve Terminal For Medium-To-Large Machine Control

Festo's VTSA pneumatic valve terminal can now accommodate 55mm ISO size 2 valves, as well as 18mm, 26mm and 42mm valves, making it suitable for medium-to-large machine control applications. This additional capability enables the terminal to handle flow rates as high as 3,000 litres per minute, which is 30 per cent more than the previous model. The new valve terminal is capable of housing up to 32 pneumatic valves - in any combination of the four permissible sizes - on the same manifold, without the need for adapter plates.

It is said to be suitable for original equipment manufacturers and machine builders seeking a fully scalable control solution. The VTSA terminal's high flow rate capability - together with its integration with the metal version of Festo's CPX electrical terminal and the availability of specialised safety function valves - makes it ideal for machines used in heavy-duty manufacturing environments, according to the company. Typical applications include automotive presses, tyre manufacturing machines, brick and ceramic tile production machines and large palletising systems.

Supplied fully assembled and pre-tested, the valve terminals are compliant with the international ISO 15407-2 and ISO 5599-2 standards. The VTSA valve terminals feature all-metal sub-base modules and employ well-proportioned air ducts designed to maximise flow rate. Festo offers a range of compatible 5/3, 5/2 and dual 3/2 and 2/2 valves, all of which have an operating pressure range of -0.9bar to +10bar.

The valves are available in 18mm, 26mm, 42mm and 55mm sizes, with respective flow rates of 500 litres per minute, 1,100 litres per minute, 1,400 litres per minute and 3,000 litres per minute. All four valve sizes offer a choice of 24VDC and 110VAC solenoids and can be configured so that their solenoid breather ports vent into the exhaust port instead of into the atmosphere. Festo is introducing a series of pneumatics products featuring integrated safety functions to help users comply with the new EN ISO 13849-1 safety standard.

A number of these products, including soft-start valves and 5/2 failsafe valves for lifting and rotary cylinders, are compatible with the VTSA valve terminal. The VTSA valve terminal allows the valves to be oriented so that all pneumatic and electrical connections are accessed from one side of the unit. This leads to a clean installation; the terminal does not require much physical space. The valves all feature front-panel light-emitting diodes (LEDs) and the pressure regulators are equipped with swivelling pressure gauges, enabling operators to see the overall system status from a single viewpoint.

The VTSA valve terminal can have individual electrical connections or a multi-pin connection; alternatively, it can integrate directly with Festo's CPX terminal controller, which is a modular hub with an Ethernet interface and fieldbus protocol support. The controller enables advanced remote diagnostics capabilities to be incorporated into factory-wide local-area networks to provide the centralised control and monitoring of individual valve performance. Local diagnostics can either be performed using the valves' front-panel LEDs or via Festo's CPX-MMI handheld control unit.

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