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UNITRONICS

UNITRONICS. Alarm Task . Alarms. Built in the controller Powerful function (V130/V350/V570). Movie. 2 /19. What is an alarm?. An Alarm is an event that must be reported to the machine operator The event is a change in the Alarm’s Trigger condition, linked to Boolean or numeric value

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UNITRONICS

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  1. UNITRONICS Alarm Task

  2. Alarms Built in the controller Powerful function (V130/V350/V570) Movie 2/19

  3. What is an alarm? An Alarm is an event that must be reported to the machine operator The event is a change in the Alarm’s Trigger condition, linked to Boolean or numeric value An Alarm can: • Provide instructions • Require operator action • Play an active role in conditions • running the process 3/19

  4. Alarms HMI is already built in – no need of special design Vision controllers support up to 128Alarms, divided into up to 16 groups 4/19

  5. Terminology- Active alarm • An alarm is active as long as its Trigger condition is met. • Whenever the Trigger Condition is: • True, the Alarm is active • False, the Alarm is inactive An active alarm cannot be reset. When active, an alarm is marked with the character ‘Y’ in the Alarm Details display 5/19

  6. Groups definition on the PC How to do it • Pause Alarms • Clear pending alarms and rescan bit • Number of active alarms • Alarm is Active • pending for reset /view /acknowledge • Alarm is Pending 6/19

  7. Alarms • Alarms in groups • Large option for trigger alarms • Option for help/comments with each alarm • Option to set password for acknowledge/reset the alarm • Multilingual support – via String Library • Alarm history 7/19

  8. AlarmDisplays There are four types of displays • Groups with PendingAlarms • Alarmsin Group • AlarmDetails • AlarmHistory 8/19

  9. AlarmDisplays Groups with PendingAlarms Alarmsare arranged in groups. This display shows all groups that contain one or more pendingAlarms. If theAlarmsin a group are no longer pending,the group is not displayed. 9/19

  10. AlarmDisplays Alarmsin Group 10/19

  11. AlarmDisplays AlarmDetails 11/19

  12. AlarmDisplays Alarm History • One can request that an alarm will be logged. • Up to 256 alarms can be saved in the memory of the PLC. when it is full it functions according to FIFO. • Alarms from the history buffer can be viewed in the alarms history display Note: If the PLC contains anSD card, you can turn SB 352 ON to enable the PLC to write the history to the SD card. 12/19

  13. AlarmDisplays AlarmPause When the Pause icon appears at the bottom of the display, it means that theAlarmsaction is suspended. 13/19

  14. How does it run? • The alarm task is running as part of the PLC's cycle • The task's displays are part of the operating system • It's up to the user to call the alarm's displays Important! When the alarm’s displays are on, the applications display is still active in the background and subroutines that are called under it are still running 14/19

  15. Ladder Elements One can jump to the group display, the alarms in group display or to a detailed alarm display. The jump will be done only if the conditions are met 15/19

  16. Thank You 16/19

  17. Terminology • Active alarm • Pending for view • Pending for acknowledge • Pending for reset 17/19

  18. Can an operator reset an alarm while the temperature is above a set point ? Submit Clear Test your Knowledge: Active Alarm 18/19

  19. Groups definition on the PC Lets open VisiLogic application 19/19

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