Bosch Appliances 3.5 manual 22.4Installation, Connecting control inputs, Connecting a ground

2011-02 Installation and User Instructions 5 Call Stations

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22.3.4 Connecting control inputs

The call station interface has two control inputs (refer to figure 22.6 and table 22.3). The control inputs can receive signals from third party equipment that must trigger actions in the Praesideo system. The control inputs can be configured via the configuration webpage of the remote call station (see section 43.4.4). The maximum length of the connected cables is 3 meter.

It is also possible to supervise the cables fo short-circuits and open connections (see figure 22.7 and figure 22.8). Whether a control input is actually supervised or not is defined in the configuration.

Warning

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

22.3.5 Connecting a ground

To reduce interference from electromagnetic fields and electrostatic discharges, we recommend to connect the housing to ground. Use the ground connector of the call station interface. Refer to figure 22.5.

GND Control input

10kΩ

10kΩ

figure 22.7: Supervised control input

GND Control input

22.4Installation

The call station interface can be attached to a wall or any other flat surface using a bracket (see figure 22.9). The distance (d) between the holes in the bracket is 40 mm.

figure 22.8: Non-supervised control input

figure 22.9: Installation

Mounting of this bracket and the unit on a drywall sheet construction requires screws with a minimum screw

Bosch Security Systems 2011-02