EDWARDS SYSTEMS TECHNOLOGY EST2 Operation Manual page 72

Operating remote devices
3.14
ISP-96
The ISP-96 annunciator/switch panels mount to a 19-inch rack.
Forty-eight switches provide manual control of system functions.
Each switch has two associated LEDs to indicate the status of the
function or the system. All LEDs and switches are independently
programmed and controlled. Typical uses include HVAC
control, firefighter telephone circuits, audio evacuation, and
paging systems. Two ISP-96 models are available: the ISP-96-2
and the ISP-96-3.
Figure 3-10: ISP-96
ISP-96-2
The ISP-96-2 provides 48 switch/LED groups consisting of a
two- position toggle switch and two amber LEDs. Placing a
switch in the up position generates an active (off normal)
condition. The down position is the normal state.
In a typical firefighter telephone application using the ISP-96,
the upper switch position selects an incoming call; the lower
switch position places the circuit to normal or off-line operation.
One of the associated LEDs indicates the circuit calling in; the
other LED indicates that the circuit has been connected to the
master handset.
ISP-96-3
The ISP-96-3 provides 48 switch/LED groups consisting of a
three-position toggle switch and two amber LEDs. Placing a
switch in the up or down positions generates one of two active
(off-normal) conditions. The center position is the normal state.
In a typical HVAC application, the ISP-96-3 switches may be
used as HOA controls to override the automatic operation of the
system. The two associated LEDs may be programmed to
indicate the status of Run/Stop contacts, fans or dampers with
limit switches, etc.
In typical audio evacuation system application using the
ISP-96-3, the upper switch position initiates circuit paging. The
center switch position allows normal/automatic control mode of
STDOP019.CDR
EST2 System Operations Manual