Instruction Manual

Instruction Manual
D103557X012
Device Information, Diagnostics, and Alerts
January 2015
50
Pressure
D Supply Pressure Alert—This alert is active if the supply pressure falls below the supply pressure alert point.
D End Point Pressure Deviation Alert—This alert is active if the instrument is in pressure control and the pressure is not
tracking the set point within the configured deviation allowance.
Travel
Note
The Travel Alert Deadband applies to the Travel Deviation Alert as well as the Travel Alert Hi, Lo, Hi Hi, and Lo Lo.
D Travel Deviation Alert—If the difference between the Travel Target and the Travel exceeds the Travel Deviation Alert
Point for more than the Travel Deviation Time, the Travel Deviation Alert is active. It remains active until the
difference between the travel target and the Travel is less than the Travel Deviation Alert Point minus the Travel
Alert Deadband.
D Travel Alert Hi—This alert is active when the Travel exceeds the Travel Alert Hi Point. Once the alert is active, the
alert will clear when the Travel falls below the Travel Alert Hi Point minus the Travel Alert Deadband. See figure 5‐1.
Figure 5‐1. Travel Alert Deadband
ALERT IS CLEARED
ALERT IS SET
TRAVEL ALERT
HIGH POINT
TRAVEL ALERT
DEADBAND
A6532
Note
The Travel Alert Hi Hi and Travel Alert Lo Lo points are used to calculate the stroke time in the event of a demand. The values must
be set to 99% and 1% respectively, however it is not necessary to enable the alert. Stroke time can be read from the device with
ValveLink software.
D Travel Alert Hi Hi—This alert is active when the Travel exceeds the Travel Alert Hi Hi Point. Once the alert is active,
the alert will clear when the Travel falls below the Travel Alert Hi Hi Point minus the Travel Alert Deadband.
D Travel Alert Lo—This alert is active when the Travel is below the Travel Alert Lo Point. Once the alert is active, the
alert will clear when the Travel exceeds the Travel Alert Lo Point plus the Travel Alert Deadband.