AutomationDirect Logo Productivity Series Frequently Asked Questions



Product Selected: Productivity Series
Category Selected: PID

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Question: Why am I getting a large or maximum Output value from my PID loop when my "P"(Gain) is small and my "I"(Reset) is 0? It appears that my error is integrating, and the output keeps increasing.
Answer: The Integral value for the P3 is actually calculated differently than our DirectLogic hardware. A value of 0 for Integral is actually maximum effect.

You need to put a large number in there, to reduce the effect to insignificance, like 9999. Note that 9999 is NOT a "Disable" setting, it just reduces the effect to an inconsequential level.
FAQ ID: 1331