Crestron GLS-EM-MCU Specifications download pdf (Page 19)

Crestron GLS-EM-MCU Crestron Green Light

Power Meter Control Unit

Operations Guide – DOC. 7294B Crestron Green Light

Power Meter Control Unit: GLS-EM-MCU

•

Configuration

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

, to open the configuration tool.

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

2 or 3 Phase

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.

CT Calibration

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.

CT Size

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.

Status

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

Conversion Factor

The conversion factor is user selectable and based on the number of pulses per

physical quantity measured (i.e., transducer type).

Pulses

Displays number of actual pulse edges (high to low and low to high transitions)

detected per a fixed 10 second time interval.

Status

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.

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Crestron GLS-EM-MCU Specifications Page 19

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