7
Installation and Maintenance Manual
Model 300MB-SD CommCenter Series D1
The CommCenter can be used for a variety of prioritized signaling purposes, such as indicating the status
of a machine or process, background messages, evacuation, alarm, start and dismissal, and other audible
notification applications. The system can be automated if external (customer-supplied) devices such as
programmable controllers, heat detectors, switches or program clocks are connected to the remote inputs.
This product is not listed for fire use.
A CommCenter plays and amplifies messages through signal lines to the remote SelecTone devices in the
system. To connect the SelecTone speaker/amplifier to the signal line, a Model AM25CK Connector Kit is
required in each SelecTone device. Speakers designed for 25-volt operation can connect directly to the
25-volt output.
Each message can be activated by a contact closure or opening at its associated remote control input. The
remote control inputs can be configured to work with either latching or momentary contacts.
Each CommCenter can accommodate up to six storage chips, selected from a library of prerecorded voice
messages, melodies, tones and/or signals. There is one message per storage chip. Each chip plugs into a
28-pin IC socket. The six sockets are labeled
PRIORITY TONE 1
through
PRIORITY TONE 6
(see Figure 11
on page 18).
Chassis Description
The CommCenter is assembled in a black, powder-coated steel two-piece housing. The cover is
attached to the housing with four screws, two along each long edge of the enclosure. The rear of the
housing incorporates two field wiring compartments baffled off from the printed circuit board area.
One compartment is for the connection of the Class II power and signal lines, and the other is for the
connection of the Class I power lines. These areas are provided with knockouts to allow the external
wiring to enter the unit through appropriate installer-supplied bushings.
Input Configuration
The CommCenter can be configured for remote activation in four ways:
•
Normally open latching contacts
•
Normally open momentary contacts
•
Normally closed latching contacts
•
Normally closed momentary contacts
The CommCenter is factory-set to be activated by closing a normally open latching contact between the
associated input and circuit ground. When activated the message continues to loop and repeat. It stops
as soon as it is deactivated. When configured for momentary activation, the message continues to loop
and repeat until the input is deactivated. When the input is deactivated, it plays the entire message before
stopping.
Each of the six inputs can be individually configured by moving a two-position jumper on a three-
position header. See Table 2 on page 8 for a list of the priority tones, their associated jumper
designations, and their silkscreened labels printed circuit board.
