United Security Products AVD-45c Manual Pagina 203

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1/03 UDC 6300 Process Controller Product Manual 189
5.17 Digital Outputs
Alarms
Digital Outputs 1,2,3, and 4 can be configured through the keyboard to be
alarm signals. Refer to Section 3 - Configuration, Set Up group
“ALARMS” to set the following:
• Events on which you want to alarm
• Alarm Values
• High or Low states
Hysteresis
• Action - energize or de-energize
• Latching or Non-Latching Alarm Outputs
Latching alarms
Bargraphs flash until the ALM/ACK key is pressed.
– If the alarm condition has ended, the Alarm Digital Output and
indicator will turn OFF
– If the alarm condition still exists, the Alarm Digital Output and
indicator will stay ON.
Non-Latching alarms
Bargraphs flash until the ALM/ACK key is pressed or alarm condition
ends.
– Alarm Digital Output and indicators will remain on until alarm
condition ends.
Alarm operation
Table 5-31 shows the operation of the Digital Output, annunciator, and
bargraphs for both configurations.
Press the ALM/ACK key to view the Alarm Group Parameters.
Table 5-31 Latching and Non-Latching Alarm Operation
Alarm
Configuration
Alarm
Condition
Alarm ACK
Key
Digital Outputs Annunciators
***
Bargraphs
Pressed EN* DEN**
STILL EXISTS NO ON OFF FLASHING FLASHING
Non
YES ON OFF ON NORMAL
Latching
ENDED NO OFF ON OFF NORMAL
YES OFF ON OFF NORMAL
STILL EXISTS NO ON OFF FLASHING FLASHING
Latching****
YES ON OFF ON NORMAL
ENDED NO ON OFF FLASHING FLASHING
YES OFF ON OFF NORMAL
* "EN" is the "Digital Outputs Energized on Alarm" configuration
** "DEN" is the "Digital Outputs De-energized on Alarm" configuration
*** Only the Annunciator associated with the alarm will flash.
**** For CE conformity, Performance Criterion A, select “NON-LATCHING”.
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