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Praesideo 3.5 | Installation and User Instructions | 3 | Control Equipment
6.3.6
Connecting control outputs
The audio expander has 5 control outputs. The control
outputs can be used to send signals to third party
equipment to trigger actions. Each control output
connection has three pins (see figure 6.7).
Control Out
C NC NO C NC NO C NC NO C NC NO C NC NO
1
2
figure 6.7: Control outputs
The common (C) pin of the control output should
always be connected. Whether the other pin that is
connected is the normally closed (NC) or normally
open (NO) depends on which action that take place
when the control output is active (see table 6.4).
table 6.4: Control outputs details
Connection
Abbr.
Normally
NC
closed
Normally
NO
open
In the configuration, a purpose must be attached to the
control output that indicates the action to be taken when
it becomes active (see table 43.6).
Bosch Security Systems | 2011-02
3
4
5
Description
By default, the NC
contact is connected
with common contact
C. When the output is
activated, the NC
contact is opened.
By default, the NO
contact is not
connected with
common contact C.
When the output is
activated, the NO
contact is closed.
6.4
Installation
The audio expander is suitable for either table-top or
19-inch rack installation. Four feet (for table-top use)
and two brackets (for rack installation) are supplied.
Note
The center bracket positions can be used to
secure the unit on a table or shelf. They can also
be used to install the unit vertically to a wall.
figure 6.8: Installation
Caution
When mounting the brackets to the unit, use the
screws that are supplied with the brackets.
Screws with a length of >10 mm may touch or
damage internal parts of the unit.
en | 110
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