Section 7.0 HMI Introduction
HGA IOM
98
About Screen
The About Screen displays model number, serial number, and software/firmware version
information regarding the filter, as well as the CT ratio.
Figure 55: About Screen
Table 39: About Screen Elements
Screen Element
Description
Stop Button
Turns off the HarmonicGuard
®
Active filter.
Serial # Display
Displays the pre-programmed factory serial number of the HarmonicGuard
®
Active filter.
Total Output Current
Display
Displays the total corrective current capacity in Amps RMS of the HarmonicGuard
®
Active filter.
System Voltage
Display
Displays the line Voltage the HarmonicGuard
®
Active filter is set to run on.
CT Ratio Display
Displays the CT ratio the HarmonicGuard
®
Active filter is set to run on.
DSP Type Display
Displays the Digital Signal Processor type used in the HarmonicGuard
®
Active filter power converter
controller.
DSP Revision Display Displays the software revision of the installed Digital Signal Processor used in the HarmonicGuard
®
Active filter power converter controller.
AVR Revision Display Displays the software revision of the installed microcontroller in the Interface PCB.
HMI Revision Display
Displays the software revision of the HMI Display application code.
Current Limit
Displays the configured corrective current limit in Amps RMS for the unit. The current limit will
typically match the unit capacity, unless the unit has been derated for a specific application, such as
high altitude or elevated ambient temperature.
Sensor Wiring Error Auto Detection Sub Screen
Some HarmonicGuard
®
Active filter models are equipped with Voltage and current feedback
sensor wiring error detection algorithms. The detection algorithms run briefly on unit power up
and check the unit sensors for signatures of common wiring errors, such as incorrect ACB phase
rotation (instead of the required ABC rotation) and inverted system CT polarity.
The Sensor Wiring Error Sub Screen is a pop-up screen, which is not accessible from any of the
main navigation screens. The screen is only displayed if a wiring error is detected. If no sensor
wiring errors are detected, the pop-up screen will remain hidden.
If a Sensor Wiring Error is detected, the HGA will be inhibited from running until system power is
removed from the unit and the error is corrected.
The Sensor Wiring Error Detection feature is comprised of several independent detection
algorithms. The two main categories of algorithms are Voltage based detections and current