Page 74 - GuardII+ Series 4208 Platform EV User Manual

Appendix

Address Alert Notes
30164 EV31 Alert Status As per EV1 Alert Status above.
30165 EV32 Measurement Status As per EV1 Measurement Status above.
30166 EV32 Alert Status As per EV1 Alert Status above.

8.2.6. EV Measurement Summary Data
2
Measurement results over Modbus are reported in m/s for acceleration, mm/s for velocity
and microns for displacement. To convert the Modbus data to imperial units, the data can be
converted by the system reading the Modbus data.

For example:
Modbus Data Desired Unit Conversion Factor Result
9.70 m/s g / 9.81 0.989 g
2
24.3 mm/s in/s / 25.4 0.957 in/s
79.6 microns mils / 25.4 3.13 mils

Additionally, all summary data is reported as floats.

Address Alert Notes
30200 EV1 Overall Acceleration Overall Acceleration measured on input
EV1.
30202 EV1 Overall Velocity Overall Velocity measured on input EV1.
30204 EV1 Overall Displacement Overall Displacement measured on input
EV1.
30206 EV1 Total Displacement Total Displacement measured on input
EV1.
For inputs that are linked for analysis with
another input, this is the vector
displacement of the combined inputs.
For inputs that are not linked for analysis
with another input, this will be the same
as the Overall Displacement.
30208 EV1 1x Displacement Displacement measured at the turning
Amplitude frequency on input EV1.
30210 EV1 1x Displacement Phase Phase difference between the Shaft Trigger
and the 1x Displacement measured on
input EV1.
If there is no Shaft Trigger present, this
value will not be consistent between
multiple measurements.
30212 EV1 2f Displacement Displacement measured at the 2x power
Amplitude frequency on input EV1.

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