Monitor Program Data and Controls
56 Danfoss Turbocor Compressors Inc.
ECD-00007M Rev. 1
6.12.2 Trending & Data Acquisition
The “Trending & Data Acquisition” window allows the
user to view and compare the trends of:
• Multiple temperature readings on one graph;
• Multiple energy demand and usage parameters on
one graph
• Multiple compressor speed parameters on one graph
To view the “Trending & Data Acquisition” window, as
shown in Figure 41, click on the down arrow next to the
“Trending” icon, and select “Charts 2”.
For the “Temperatures” graph, the trends of the following
parameters may be viewed simultaneously:
• Suction Temperature
• Discharge Temperature
• Liquid Temperature
• Entering Air/Water Temperature
• Leaving Air/Water Temperature
• Evaporating Temperature
• Condensing Temperature
For the “Energy Demand & Usage” graph, the trends of the
following parameters may be viewed simultaneously:
• Actual (Mains) Power Input [kW]
• Requested (Motor) Power Input [kW]
• Compressor Demand %
• Inlet Guide Vane Opening %
For the “Compressor Speeds” graph, the trends of the
following parameters may be viewed simultaneously:
• Actual Compressor Speed [RPM]
• Minimum Compressor Speed [RPM]
(estimated surge)
• Maximum Compressor Speed [RPM]
(choke)
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