Eaton Static Transfer Switch 2000A 3-Pole Installation and Operation Manual 164001127—Rev 01
39
Figure 16. Redundant Operator Interface (ROI)
Service Port
(For use by
service
personnel only)
Right-side LEDs show which source is
powering the output load
Green = powering the load (SCR on)
Red = not powering the load (SCR off)
Left-side LEDs show the availability of each
source:
Green = Source is available (within
specification).
Red = Source is not available.
Source 1 is available but is not
currently powering the output
load.
Source 2 is available and is
currently powering the output
load.
SOURCE SELECTOR
(Momentary Toggle Switch):
In
NORMAL
Mode:
Toggle SOURCE 1=Set Preferred Source to Source 1
In
REDUNDANT
Mode:
Toggle SOURCE 1=Transfer Load to Source 1
MAINTENANCE
Green = Maintenance
Bypass is not engaged
Red = Maintenance
Bypass is engaged.
MODE OF OPERATION
(Toggle Switch):
NORMAL
= Standard STS operation with normal
transfers using the selected transfer algorithm
REDUNDANT
= Use ROI to transfer load; SAS
board performs transfers using its own algorithm
Leave in
NORMAL
except in emergencies.
ALARM
Green = No Alarms
outstanding
Red = Alarms outstanding
Summary of Contents for STS 2000A
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