Could you explain to me the difference in usage between dead zone and sensitivity in the ABB TZID-C type positioner? Please, expert!
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Is there a dead zone? If I set the dead zone to 0.5 and the actual valve position is 50, will the valve automatically adjust its position to 50 when this value drops below 49.5 or rises above 50.5? The usage of sensitivity seems similar to that of dead zone. Could some expert please explain this?
This is also what I understand; it helps to prevent the locator from emitting signals frequently, thereby extending the lifespan of the valve
On the contrary, the purpose of the dead zone is to ensure that when the valve position deviates to 49.5 or 50.5, the valve does not adjust automatically; in other words, the valve considers such a deviation to be acceptable and does not make any automatic adjustments. Only when the deviation exceeds 49.5 or 50.5 does the valve detect it and make the necessary adjustments.
Thank you very much:handshake
In the ABB TZID-C type locator, the sensitivity can be understood in this way: as per the above requirements, the locator will adjust immediately when the value is less than 49.5 or greater than 50.5
What was said on the 3rd floor is correct. Additionally, a dead zone for proportional control can be preset in the control system; generally, the output remains unchanged in such cases to prevent the valve from operating frequently due to minor fluctuations in operating conditions