- Telecenter 1100@: 2524 Controller Installation
-w
Buffers: The 2524’s outputs each have a relay that can handle
up to five amperes of current at up to 120 VAC or 30 VDC.
Should the equipment you connect to a given output require
more power, you can accommodate it by using buffers. The 2418
AC Buffer can switch up to 10amperes at 1lOVAC, and the 2419
DC Buffer can switch up to five amperes at 60 VDC (the higher
voltage is needed by minute-impulse clocks). Wiring two or more
buffers to split the load increases the total load that the output
can handle.
2417 Correction Module: This is used to enable the 2524’s
“DIG” output to control a power supply with up to 25 digital
secondary clocks.
Intercom Equipment
Director Control Panels: The combination of the 2524 and
a Director intercom system provides a sophisticated communi-
cations control center. The intercom panels enable the user to
talk and listen to rooms, and to distribute program material
(from optional program sources and over optional power ampli-
fiers). The 2524 shows call-ins on its display, enables the user to
dial rooms on its keypad, and provide software zones for paging
(and time tones). Al! of the station-related functions also require
optional speaker relay modules and room speakers.
Speaker Relay Modules: These panels carry out the zoning
and calling commands from the 2524 by connecting the proper
rooms. The TC4130, like the TC4120 (SCC25), has a chassis for
rack-mounting. The TC4131, like the TC4110 (SC25), is designed
to be mounted on the back of Rauland switch panels, such asthe
SW Series.
Telephone: A CRT3 Staff Telephone can be used for commu-
nicating with room stations and paging. The 2524 will show
call-ins on its display and signal them with “beeps.” Again, this
requires optional relay modules for switching the speakers on.
Also required is a TC4160 (VCM2 VoiceControlled Module),
which is an amplifier unit that automatically switches from
“listen” to “talk” when the telephone user begins speaking. For
a more complete display of call-ins (and for a remote location),
install a TC4200 Vacuum Fluorescent Display. Seethe attached
wiring diagram KM0983.
Music: The 2524 can distribute a program or music source
connected to its “Program” input for continuous listening. It can
also distribute a program source connected to its “Music” input
as part of a class-change event. Besides the relay modules and
room speakers, this requires a program source, such as the
Rauland MCX300 Tuner and Tape Cassette Player, and a power
amplifier.
Output Terminals
In the following descriptions, the 2524’s rear terminals are
described in order, from left to right, asviewed from the rear of
the chassis.
v
In-Gnd-Out: These four wire-wrap terminals (there are two
“GND” pins) can be wired to a standard RS-232 cable and
connected thence to a computer or a modem for remote pro-
gramming, or to a serial printer to provide a log of intercom
activities, event execution, and faulty lines (see the sample log
below). For the wiring to the cable, seethe attached KM0991.
RPl: This potentiometer must be adjusted for the 2524 to
respond to call-ins (see “Calibrating RPl” in this manual).
SC25: This 26-pin connector must be connected to all op
tional speaker relay panels in the system. It conveys the data for
switching the speaker relays.
Answer: Momentarily connecting this input to a circuit
Logging Messages
Print-out Explanation
<CALL 126Station 126 placed normal rail at
11:37AM 4-s-90 11:37 AM 4/5/90.
<.ANSW 126Call from Station 126 answered.
11:38AM 4-5-90
CEMER 129Station 129 placed emergenq caZJ
11:45AM 4-5-90
<ANEW 129Call from Station 129 answered.
11:45AM 4-5-90
<.ZONE!S 1234Event occured on Zones I, 2, 3,
12:45PM 4-S-90 and 4 at 12:45 P.M. on 4/5/90.
<.FAULT 101Fault detected at station ZOI.
1:OOPM 4-5-90
<*TIME 00:OO:OOSynchronization command sent at
midnight.
ground instructs the 2524 to connect a remote telephone to a
station that is calling in. If this and a ground terminal are wired
across the phone’s hook switch (use the “Aux” terminals on the
CRT3), lifting the handset will immediately connect it to the
caller. It is also necessary to keep the “Reset” terminal (described
next) connected to a circuit common throughout the communi-
cation. Seethe attached KMO983.
Reset: This must remain connected to acircuit common while
the remote phone is paging or in communication with a room
station. Connect this input and a ground terminal across the
hook switch of a remote phone (the “Aux” terminals on a
CRT3 Staff Telephone). Note that this output is active when
it is high: it disconnects the paging and intercom amplifiers
and releases the speaker relays unless it is grounded, See the
attached KM0983.
Page In: Momentarily connecting this input to a circuit
common instructs the 2524 to connect a remote telephone to
al! room stations for an All-Page announcement. This takes
precedence over the “Answer” terminal. Thus, if “Page” and
“Answer” are grounded simultaneously, the 2524 will carry out
the page and ignore the answering function. If the remote
telephone is in communication with a room station, pressing the
Pagebutton would disconnect the room and engage the paging
function. It is also necessary to keep the “Reset” terminal (de-
scribed immediately above) connected to a circuit common
throughout a page. Seethe attached KM0983.
In: Connecting another master clock here enables it to control
the time in this unit. When the 2524 receives a valid synchroni-
zation signal from another Rauland master clock, it changes its
time to 12:Ol a.m.
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