Page 22 - GuardII+ Series 4208 Platform EV User Manual

GuardII+ EV Card Operation

This icon is used when a measurement saved due to a Synchronized
operating state Periodic Trigger.
This icon is used when a measurement saved due to an Unknown operating
state FLH Periodic Trigger.

NOTE:
FLH, FLC and RLH Periodic Triggers cannot occur if the machines’
temperature and load Operating Conditions are not available either
through a Remote I/O Unit or directly through Modbus.

Additionally, the Synchronized Periodic Trigger cannot occur unless a
Shaft Trigger signal from the machine is available.

4.6.5. Level-Based Triggers

These Triggers compare vibration levels to configured Alert thresholds and resolve down
to a specific Summary Number and input. This means that a High Overall Displacement on
input EV1 causes a different Trigger than a High 1x Displacement Amplitude on input EV1;
and that each of these Triggers is different from a High 1x Displacement Amplitude on input
EV12. There are 21 different thresholds that may be used for the Level-Based Triggers:
• Moderate/High/Very High Overall Acceleration

• Moderate/High/Very High Overall Velocity
• Moderate/High/Very High Total Displacement

• Moderate/High/Very High Overall Displacement
• Moderate/High/Very High 1x Displacement Amplitude

• Moderate/High/Very High 2f Displacement Amplitude
• Moderate/High/Very High Remaining Difference Displacement
NOTE:
Most of the Level-based Triggers are optional and can be disabled by
setting the Alert thresholds to ‘0’.

The exception is the 2f Displacement Amplitude; this Trigger cannot be
disabled.
By default, only the 2f Displacement Amplitude Trigger is enabled.

NOTE:
Thresholds can be changed using EVView. If the thresholds are not set
appropriately then the Trigger-based Archiving may become less effective.

The Trigger interval for each of these is 30 days; additionally, the result must be confirmed
over multiple measurement cycles before the Trigger occurs.

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