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9-5

IM 05P03C21-01EN

Alarm Functions

ReleaseofAlarmLatch

The alarm latch function can be cancelled by the user function key, via communication,

or by contact input.

Cancelling the alarm latch function cancels all latched alarm outputs.

► Releasebyuserfunctionkey:12.2AssigningFunctiontoUserFunctionKeyandA/Mkey

► Releasebycontactinput:11.1.1SettingContactInputFunction

► Releaseviacommunication:UTAdvancedSeriesCommunicationInterfaceUser’sManual

Lit Lit

Contact type in the figure above: Energized when an event occurs (factory default).

Alarm hysteresis

Unlit Unlit

Lit LitUnlit Unlit Unlit

ON ONOFF OFF

ON ON ONOFF OFF

Time

PV high limit

alarm setpoint

PV low limit

alarm setpoint

PV high limit alarm state

PV low limit alarm state

PV high limit alarm output

of latch 1 action

PV low limit alarm output

of latch 2 action

Release order Release order Release order

OperationofAlarmOutputandDisplayLamp(EV)

The contact output and display lamp (EV) are usually output and displayed according

to the setpoint of the alarm type. However, the alarm conditions (operations) of the

normal action, and latch action can be assigned to the contact output and display lamp

(EV), regardless of the setpoint of the alarm type. (Two operations can be assigned

simultaneously.)

► Displaylampaction:12.1SettingDisplayFunctions

► Contactoutputaction:11.2.1SettingFunctionofContactOutput

9.1SettingAlarmType

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