User manual

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3.7 Generator (AC Voltage / Current / Frequency) Setup
The AC Frequency, AC Voltage, and AC Current menus allow the measurement
and display of the AC voltage, current, and frequency from the generator.
3.7.1 AC Frequency
In the AC Frequency menu, under and over frequency warnings and failures can
be configured. The DisconnectFreq setting is used by the GSC400 controller
as a backup to the speed input (only if speed is set to magnetic pickup). If the
speed input is not detected, the controller checks the DisconnectFreq settings.
If the measured frequency is greater than this setting then the engine will be
considered running.
3.7.2 AC Voltage
This section will cover the configuration of AC Voltage.
Note that the GSC400 requires a neutral reference from the generator and can
only support up to 600VAC L-L on its inputs.
UGSC400 Voltage Groups
The user can enter under voltage, over voltage, and over current settings for four
different voltage configurations (see Table 15 below). This allows multiple
GSC400 units programmed with identical settings to be used on multiple
generator types or a GSC400 to support multiple voltage configurations on a
single generator. The voltage configuration the GSC400 uses is set by the
Voltage Group menu. Each voltage group supports a variety of genset
configurations.
Table 11 lists the submenus that apply to all voltage groups.
Table 11 – AC Voltage Submenus
Submenu
Description
Voltage Source
Enable or Disable Voltage Sensing. AC Current
Sensing will not work without voltage sensing
enabled.
Line or Neutral
This only affects how the AC Voltage is displayed.
The choices are “Line to Line”, “Line to Neutral”, or
“Both”.
Voltage Group
This is where the user picks which voltage group to
use (1, 2, 3, or 4).
There are other submenus under the three listed here but they apply to specific
voltage groups. See Table 13 below.