Emerson Fisher 4320 Manual de Instruções descarregar pdf (Página 44)

Instruction Manual

D103621X012

4320 Position Monitor

April 2014

Reset Accumulated Count —select Yes to reset the accumulated count to 0 (zero). This is typically done when

maintenance to valve and/or actuator has been performed. Select No to retain the current cycle count.

Enable Cycle Count Alert

Cycle Trip Point—used to adjust the trip point.

D Switch State Alerts—select the switch state monitors that report their outputs as status alerts.

Switch Latched—condition of the optional latch for the switch state variable.

Opened/High Limit Tripped—indicates the input signal meets the user-specified requirements for the opened or high

limit.

Closed/Low Limit Tripped—indicates the input signal meets the user-specified requirements for the closed or low limit.

Enable 'Latched' Alert—enables the alert reporting that the switch state is latched. If latching mode is active, this alert

must be enabled.

Enable 'Opened/High' Alert—enables the alert reporting that the valve is opened, or the PV is above the high trip point.

Enable 'Closed/Low' Alert—enables the alert reporting that the valve is closed, or the PV is below the low trip point.

D Switch Response Alerts

Note

Switch Response alerts are not available in snap-acting mode.

Transition Alert—when enabled indicates the process state is in transition (i.e. between limits).

Transition Dwell Alert—when enabled indicates that the input signal has been in the transition state for longer than the

specified time window.

Transition Dwell—indicates the length of time in the current state.

Enable 'In Transition'—enables the alert reporting that the position signal is between trip points.

Enable 'Transition Dwell'—enables the alert reporting that the output has spent excessive time between trip points.

Transition Dwell Threshold—indicates the length of time the monitored signal must remain in the transition state before

the Transition Dwell alert is set.

D Controller Alerts (On/Off Control)

Note

Controller Alerts are disabled by default.

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Emerson Fisher 4320 Manual de Instruções Página 44