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4-23

Chapter 4: Communication-Based Operation

4.7.4 Travel Histogram

Indicates how frequently the valve travels in the specified position ranges, as a propor-

tion of the total travel time.

[Travel Histogram]

Select [Diagnostics] >> [Valve Diagnostic Information] >> [Travel Histogram] >>

[Travel Histogram]. You will be able to check the following items.

■ Travel Histogram 1 to Travel Histogram 16

Displays the frequency of the specified position region as a percentage.

■ Update Travel Histogram

Updates per-position frequency distribution values 1 to 16 to the latest values.

• Select the [Update Travel Histogram] menu to execute the update.

■ Clear Travel Histogram

Deletes the per-position frequency distribution values.

• Select the [Clear Travel Histogram] menu to delete the values.

[Travel Segmentation]

Select [Diagnostics] >> [Valve Diagnostic Information] >> [Travel Histogram] >>

[Travel Segmentation]. You will be able to check or modify the following item.

■ Travel Segmentation 1 to Travel Segmentation 16

Displays and allows modification of the 15 position regions for the 16 positions.

4.7.5 0% Travel Error

When the valve is fully closed, the zero point from when zero adjustment was per-

formed is compared to the current zero point, and an alarm occurs if the discrepancy

between them is greater than or equal to a specified deviation and if this discrepancy

persists for longer than the specified time.

Select [Diagnostics] >> [Valve Diagnostic Information] >> [0% Travel Error]. You will

be able to check or modify the following items. To change a value, select the item and

then change it.

■ 0% Tvl Error +, 0% Tvl Error −

Displays and allows modification of the deviation on the “+” side and “−” side.

■ 0% Tvl Error Waiting Time

Displays and allows modification of the waiting time. An alarm occurs if the deviation

continues for longer than this waiting time.

■ 0% Tvl Error Alarm Enabled

Displays and allows modification of the alarm enabled/disabled status. If the status is

Enabled, alarms will occur, and if the status is Disabled, alarms will not occur.

Azbil AVP301 User Manual

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