Bosch Appliances 3.5 manual 21.2.1Power supply/input contacts, 1: X2 connector details

2011-02 Installation and User Instructions 5 Call Stations

en 242

Note

With the exception of the connection to X908, the wiring of all other connectors must be less than 3 meter in length.

The control inputs can be configured to act on contact make or on contact break (see section 42.5). It is also possible to supervise the cables for short-circuits and open connections (see figure 21.3 and figure 21.4). Whether a control input is actually supervised or not is defined in the configuration.

21.2.1Power supply/input contacts (X2)

The external interface for the back-up supply consists of a pin header connector with 8 positions (see the PCB for the pin numbering). The connector provides also two control inputs. These can be used to receive signals from other equipment that must trigger actions in the Praesideo network.

table 21.1: X2 connector details

Pin Signal

1GND

2GND

3Back-up supply

4 Back-up supply

5Control input 1 (negative)

6 Control input 1 (positive)

7 Control input 2 (negative)

8 Control input 2 (positive)

table 21.2: X2 technical data

External voltage:

18 to 56 V External current: max. 2 A

Control input 1 and control input 2 Resistance detection (supervision enabled): Cable short circuit

< 2.5 kohm Contact closed

7.5kohm to12 kohm Contact open

17.5kohm to 22 kohm Cable broken

> 27 kohm

Resistance detection (supervision disabled): Contact closed

< 12 kohm Contact open > 17.5 kohm

Control input

Negative Positive

10kΩ

10kΩ

figure 21.3: Supervised control input

GND Control input

figure 21.4: Non-supervised control input

Warning

Do not connect DC or AC signals to the control inputs, otherwise the input circuit may be damaged. Only use voltage-free contacts.

Bosch Security Systems 2011-02