Page 26 - GuardII+ Series 4208 Platform PD User Manual

PD Card Operation

NOTE:
Up-Trend Triggers will not occur specify an operating point unless the
monitor can acquire the machine’s active power and asset temperature
Operating Conditions either through a Remote I/O Unit or directly through
Modbus. This configuration is done using IAM; refer to Section 6.3.
Similarly, the ambient variation flag cannot occur unless the ambient
conditions are available to the monitor.

4.6.7. Load Dependence Triggers

These Triggers detect a correlation between increased positive PD levels and increased
load and resolve down to a combination of input pair and sensor. This means that load
dependence detected on input Phase A Machine PD causes a different Trigger than load
dependence detected on input Phase A System PD; each combination of input and sensor
has its own Trigger.
The Trigger interval for is 30 days; additionally, the current PD levels must be higher than
the Moderate Threshold setting, and the Trigger must be confirmed over multiple
measurement cycles before the Trigger actually occurs.

A measurement saved in the Archive due to a Load Dependence Trigger will appear in
PDView with a flag indicating which sensor caused the Trigger:

• An “LD_C1” flag indicates that the load dependence was detected on the ‘C1’ sensor
• An “LD_C2” flag indicates that the load dependence was detected on the ‘C2’ sensor

Figure 4-6 Example of a Load Dependence Trigger in PDView

NOTE:
Load Dependence Triggers will not occur unless the monitor can acquire
the machine’s active power and asset temperature Operating Conditions
either through a Remote I/O Unit or directly through Modbus. This
configuration is done using IAM; refer to Section 6.3.

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