Messonilan locator positive and negative reactions
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How to adjust the forward and reverse operation of the MessoniLand locator? The valves on site are air-operated valves; the self-tuning process proceeded smoothly. The control center sends a signal of 4MA, which causes the valves on site to open fully, while a signal of 20MA causes them to close fully. How can the forward and reverse direction of valve operation be switched?
This post was last edited by ZhiGE on 2020-7-16 09:09. 1. Set STEUP-CONFIGURATION-ATO/ATC on P67 (use air-operated control to achieve forward and reverse action). 2. Adjust CALIBRATION on P70
The setpoint for this valve is fed back on the central DCS system.
It’s just a matter of adjusting the signals in the control room; after all, it’s an analog signal, so changing the settings will do.