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C C h h a a p p t t e e r r 7 7 O O p p e e r r a a t t i i o o n n a a l l I I n n t t e e r r f f a a c c e e s s
There are two STS operator interfaces:
•
The touchscreen display, which is the normal operator interface
•
The Redundant Operator Interface (ROI), which sets the operational mode and backs up the touchscreen
display
7 7 . . 1 1
T T o o u u c c h h s s c c r r e e e e n n D D i i s s p p l l a a y y
The STS has a 10.4-inch diagonal touchscreen display. The STS has a comprehensive set of screens covering
setup, transfer controls, alarms, events, status, and measurements.
Changes to controls or parameters must be made from the touchscreen display; they cannot be changed
remotely from a Building Management System (BMS) or from a web browser. (The BMS can issue dry contact
control signals, such as Remote EPO or Remote Source Select.)
7 7 . . 1 1 . . 1 1 V V o o i i c c e e U U n n i i t t
A Voice Unit provides short audible statements that supplement text or graphics in certain situations, such as
"Static Switch, new alarm," or "Static Switch, alarm cleared." The Voice Unit also steps operator through text
procedures from the Help screens.
7 7 . . 1 1 . . 2 2 H H o o m m e e S S c c r r e e e e n n
The Home screen
Home screen has a dynamic graphic 1-line mimic showing active and inactive paths from sources to output
with power measurements:
•
The active path between one source and the output is shown in yellow.
•
Inactive paths or bypass paths are shown in blue.
The Status Panel summarizes the general status of the unit. It shows which source is open or available, which
bypass is being used, and how many alarms are present.
The Normal/Alarm status indicator shows if alarms are present:
•
If no alarms are outstanding, the indicator is green and reads Normal
•
If the indicator is red and reads Alarm, then the operator should touch the Alarms button on the bottom
row to access the Alarms screen for a list of outstanding alarms.
Transfers panel has a counter of the number of transfers that have occurred since the last Clear of this
counter.
The Home screen also has Preferred Source control (see
(Figure
13) is the first screen displayed when the STS is turned on.
Eaton Static Transfer Switch 2000A 3-Pole Installation and Operation Manual 164001127—Rev 01
8.1.1 Preferred
Source).
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