TCI HGA Manual - Manual (Page 94)

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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 based detections. The voltage based detection algorithms
monitor the three phase line voltage input for proper ABC phase rotation, polarity, balance and nominal magnitude. The
current based detection algorithms monitor the system Current Transformer (CT) sensor feedback for proper phase rotation,
polarity, balance, and CT open or shorted conditions. The current base detections are only engaged if a minimum level of
load current is present during power up. Both the voltage and current detection algorithms can be globally or individually
configured by TCI qualified personnel via the password protected Technician level Setup Screen.
Figure 7.17 – Sensor Wiring Error Self Test Sub Screen
Table 7.17 – Sensor Wiring Error Self Test Sub Screen Elements
Screen Element Description
Self Test Result
Indication Displays the current Pass/Fail/In-Progress State of the Sensor Wiring Error Auto
Detection feature. When a sensor wiring error is detected the specific fault code will
be shown. See Table 7.19 for a description of specific fault codes.
Self Test Result
Description When a sensor wiring error is detected one or more corrective actions will be
displayed here. See Table 7.19 for a list of suggested resolutions.
Acknowledge
Button Pressing the Acknowledge Button will hide the Sensor Wiring Error Self Test Sub
Screen so other the screens can be examined in order to trouble shoot the wiring
error.
If a user attempts to operate the unit while a sensor wiring error is still present by
pressing the Run or Stop buttons the screen will reappear.
Self Test Result Indication
Self Test Result Indication