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Crestron GLS-EM-MCU
Configuration
2 or 3 Phase
CT Calibration
CT Size
Status
Conversion Factor
Pulses
Status
Operations Guide – DOC. 7294B
Crestron Green Light
Configuration of the GLS-EM-MCU system is done using the GLS Energy Meter
Configuration Tool in Crestron Toolbox version 2.31, or later. Click Tools | GLS
Energy Meter Configuration Tool, or click
Refer to the applications help file for detailed information about the function of
specific buttons.
Recording Interval
Logging the energy usage over a 15 minute interval is consistent with the industry
standard and suitable for most installations. The other two selections (5 and 10
minutes) are provided to give additional utility—for example, for a faster check
during setup.
Electrical Tab
The selection is based on the type of electrical service at the installation; select
2-Phase (120/240 VAC) or 3-Phase (277/480 VAC). Once selected, the tool displays
the information for Phase A, B and C or Phase A and B accordingly.
The current transformer calibration code is a 21 character string that is stored within
the GLS-EM-MCU. The code is placed on the label of the GLS-EM-CT and must be
entered into the current transformer calibration field of the GLS Energy Meter
Configuration Tool.
The value (20A, 50A, 200A, 400A, 600A) is automatically generated based on the
calibration code that is entered. If the calibration code is deleted, the current
transformer size can be selected by the user via a drop-down menu that is accessed
by clicking on the present value displayed.
The status menu displays one of two possible codes:
•
"OK" indicating current transformer is installed correctly.
•
"REVERSED" indicating that white and black leads of current transformer
are transposed at terminal block or that the current transformer is installed
with the wrong side facing the electrical feed source.
Pulse Metering Tab
The conversion factor is user selectable and based on the number of pulses per
physical quantity measured (i.e., transducer type).
Displays number of actual pulse edges (high to low and low to high transitions)
detected per a fixed 10 second time interval.
The status menu displays one of two possible codes:
•
"OK" indicating that the GLS-EM-MCU is properly receiving pulses.
•
"No Pulses" indicating that the GLS-EM-MCU is not detecting any pulses.
Crestron Green Light
®
Power Meter Control Unit
, to open the configuration tool.
®
Power Meter Control Unit: GLS-EM-MCU • 15
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