Allen-Bradley 1756-CFM, Руководство пользователя

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32 Rockwell Automation Publication 1756-UM010C-EN-P - June 2021
Chapter 3 Configurable Flowmeter Module Features and Operational Modes
Terminal Usage in High Resolution Frequency Mode
In High Resolution Frequency mode, F0 and F1 are used as inputs.
Output Operation in High Resolution Frequency Mode
In High Resolution Frequency mode, outputs can:
• operate normally
• be forced ON or OFF.
• be tied to the frequency flowmeter input (that is, F1).
Module Features Used in High Resolution Frequency Mode
These module features are available in High Resolution Frequency mode.
Low Frequency Clear
Use Low Frequency Clear to set a minimum frequency level. Any frequencies
detected below this level will be set 0.
Sample Time
Use Sample Time to determine the length of time each sample uses. The
maximum sample time is 2 seconds.
Module Feature Page
Low Frequency Clear 32
Sample Time 32
Acceleration Calculation 33
Meter Factor 33
Trigger On 33
Tie to Counter 33
Highest Allowed Frequency 34
Acceleration Alarm Value 34
Frequency Average 34
Acceleration 34