2011-02 Installation and User Instructions 5 Call Stations

en 218

Note

With the exception of the connection to X1 and X2, the wiring of all other connectors must be less than 3 meter in length..

18.2.1 Back-up supply (X4)

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. For example, signals from the back-up supply that indicate its status such as mains available, battery OK etc.

table 18.1: X4 connector details

Pin Signal

1GND

2GND

3Back-up supply

4 Back-up supply

5GND

6Control input 1

7GND

8Control input 2

table 18.2: X4 technical data

Backup voltage:

18 to 56 V(DC)

No fault reporting when > 20 V Backup current:

max. 2 A

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

<2.5 kohm Contact closed

7.5 kohm 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

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 18.3 and figure 18.4). Whether a control input is actually supervised or not is defined in the configuration.

GND Control input

10kΩ

10kΩ

figure 18.3: Supervised control input

GND Control input

figure 18.4: 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

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Bosch Appliances 3.5 manual Back-up supply, X4 connector details, X4 technical data
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3.5 specifications

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