YOKOGAWA UTAdvanced UP55A, User Manual

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11-13
IM 05P02C41-01EN
Alarm Functions
11
Release of Alarm Latch
The alarm latch function can be cancelled by the user function key, via communication/
ladder program, or by contact input.
Cancelling the alarm latch function cancels all latched alarm outputs.
► Release by user function key: 13.2 Assigning Function to User Function Key
► Release by contact input: 12.1.1 Setting Contact Input Function
► Release via communication: UTAdvanced Series Communication Interface User’s Manual
PV
Lit Lit
Contact type in the figure above: Energized when an event occurs (factory default).
Alarm hysteresis
Alarm hysteresis
Unlit Unlit
Lit Lit Unlit Unlit Unlit
ON ON OFF OFF
ON ON ON OFF 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
Release order Release order Release order
Operation of Alarm Output and Display Lamp (ALM)
The contact output and display lamp (ALM) 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
(ALM), regardless of the setpoint of the alarm type. (Two operations can be assigned
simultaneously.)
► Display lamp action: 13.1 Setting Display Functions
► Contact output action: 12.2.1 Setting Function of Contact Output
11.1 Setting Alarm Type