Selecting System Functions On San Annunciators - EDWARDS SYSTEMS TECHNOLOGY EST2 Operation Manual

Operating remote devices
the speaker circuit. The LEDs indicate the active condition of the
speaker circuit.

Selecting system functions on SAN annunciators

The SWU-8 and the ISP-96 series annunciators provide two-
position and three-position toggle switch options. The SHO-4
provides three-position rotary switches. Apart from operator
intervention the SAN annunciators will allow the system to
function automatically. During off-normal conditions, however,
the operator has the option of toggling or turning switches to
activate programmed functions or override normal system
functions.
Each three-position toggle switch has two LEDs. When the
switch is in the center position, the system will function
automatically and keep both LEDs off. When an operator toggles
the switch up or down, it will activate a programmed function,
and turn on the appropriate LED.
The three-position rotary switch is like the three-position toggle
switch, but it has a third LED. When the switch is in the center
position the system will function automatically and turn on the
center LED. The upper and lower LEDs operate independent of
the switch.
The two-position toggle switch has two LEDs. When the switch
is down the system will function automatically. When an
operator toggles the switch up, it will activate a programmed
function and turn on the upper LED.
EST2 System Operations Manual 3.15