ABB locator surging on site

2017-01-14 View Original

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The valve is a straight-stroke control valve with reverse action. Configured as a locator: V18348-10111310110 (ABB). Pressure reducing valve: B74G-4AS-995 (Norgren). Solenoid valve: WSNF8327B112MO (ASCO). Gearbox: 4514A (Tyco). Pneumatic control valve: VRD1024H-RA9 (Norgren). The current issue with the valve is that it keeps fluttering at low opening degrees. Do any experts have any good solutions?

Reply #2 2017-01-15

What is the valve stroke? Check whether the length of the feedback arm meets the installation specifications and is compatible with the stroke. Also, verify that the packing setting is appropriate; otherwise, check if the gain value is set too high.

Reply #3 2017-01-15

The valve stroke is 12 mm, the feedback rod is within ±28°, and the packing is loose. This fairy boy’s speed booster comes with a needle valve. It’s difficult to adjust; I’ve now replaced the speed regulator with an SMC one, and it’s adjusted properly now

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ABB locator surging on site

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