Section 7.0 HMI Introduction
HGA IOM
99
based detections. The Voltage based detection algorithms monitor the 3-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 56: Sensor Wiring Error Self Test Sub Screen
Table 40: 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.
Self Test Result
Description
When a sensor wiring error is detected, one or more corrective actions will be displayed here. See Table 41
for
a list of suggested resolutions.
Acknowledge Button
Pressing the Acknowledge Button will hide the Sensor Wiring Error Self Test Sub Screen so other 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.
Table 41: Sensor Wiring Error Code Table
Error
Code
Error
Suggested Corrective Action
0
No Error
No corrective action required.
1
Self Test In Progress
No correction action required. Typically, the self-test will complete and auto clear in less
than 10 seconds after power up.
2
Line Voltage Synch
Turn off unit and check 3 phase AC input Voltage wiring for missing phase connection or low
line Voltage.
3
Input Over Voltage
Turn off unit and check 3 phase AC input Voltage wiring for high line Voltage
4
Reverse Voltage Phase
Rotation
Turn off unit and check 3 phase AC input Voltage wiring for A, B, C phase rotation or
missing phase connection.
5
Phase A Input Under
Voltage
Turn off unit and check 3 phase AC input Voltage wiring for missing phase or low line
Voltage.
6
Phase B Input Under
Voltage
Turn off unit and check 3 phase AC input Voltage wiring for missing phase or low line
Voltage.
7
Phase C Input Under
Voltage
Turn off unit and check 3 phase AC input Voltage wiring for missing phase or low line
Voltage.
8
Reverse CT Current
Rotation
Turn off unit and check system CT feedback for A, B, C phase rotation, inverted CT polarity,
or CT short/open.
9
Phase A CT Under Current
Turn off unit and check system CT feedback for no feedback (CT short or open).
10
CT Under Current
Turn off unit and check system CT feedback for no feedback (CT short or open).
Self Test
Indication
Self Test
Description
