Qs841A System Controller; Overview - ABB CPS6000 Product Manual

7B QS841A System Controller

Overview

The QS841A controller is the integrated network controller option that can be custom configured for a
specific system or customer need. It provides system monitoring and control features, as well as office
alarm outputs from rectifiers, LVD boards, and remote modules.
This section describes the controller features, functions and alarms from perspective of a user utilizing
the front panel display. All these features are available through Web pages accessible from the Ethernet
port. The controller content in the web pages versus the front panel is arranged differently due to the
available large space that comes with using a monitor screen. However, the majority of the information
content, commands, and configurable items remain the same as those on the front panel. This section
focuses on describing the controller from the front panel perspective which is applicable to respective
feature implementation in the web pages.
Controls and Display
Figure 7-1 shows the front panel controls and display of the controller.
Amps Display
The backlight of the four-line LCD display changes color to reflect the system alarm status as follows:
Green Normal
Amber Minor Alarms Present
Red Major Alarms Active
The up and down arrow keys can be used to adjust screen contrast when the controller is displaying
the default screen.
Menu>Configuration>System Settings. At the default menu, the left and right arrows are also used to
toggle the display from displaying the system voltage or the system load current.
Otherwise, the left and right arrow keys are used to navigate the menus and the up and down arrow
keys are used to change values when configuring the system. A black box highlighting a menu item
indicates that the item has sub-menus.
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Volts Display
Previous Menu
Figure 7-1: QS841A Controller Faceplate
Contrast adjustment
Display
Showing Default Screen
Display Menus
Save Changes
Refresh
Arrow Keys
Navigate Menus (up, Down left right)
Adjust Values during Configuration
is also available through the menus at