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ABB UNITROL 1020 - Page 167

ABB UNITROL 1020
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 Chapter 6 - Operation
UNITROL 1020 User Manual 3BHS335648 E82 159
1. Displays the generator state condition, according to the Gen CB Closed and
Parallel with the Grid status signals. Prim. Net and Sec. Net are used during
VDC operation mode.
2. Displays the actual operating mode of the AVR. Some modes may be shaded
(disabled) if an optional feature is not available or due to system conditions or
configuration. For more information about the software feature and operation
modes refer to Chapter 3.4 Software.
3. Displays Limiters status.
4. Displays AVR Alarms status. Not all alarms statuses are shown when an
optional feature is not available in the AVR.
5. The actual setpoint can be adjusted with the upper Up and Down buttons (if
the adjustment is not performed via analog or digital inputs). A step response
can be performed by specifying the Step value and then clicking the lower Up
(actual setpoint + Step) and Down (actual setpoint Step) buttons.

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