Bosch Security Systems | 2008-12
PRS-1AIP1 IP Audio Interface
| Installation and User Instructions | Installation
en
| 9
2.8
Control Inputs (step 6)
Connect the Control Inputs 1..8 (6 and 7) that are
needed.
The Control Inputs 1..8 can be supervised (if
configured). Two 10 kohm resistors have to be added to
each Control Input to enable supervision. The resistors
should be mounted close to the switch to make it
possible for the device to supervise the cable between
the switch and the input connector. The input detects a
10 kohm resistance if the switch is closed and a 20 kohm
resistance if the switch is open. This way shorted and
open circuits are detected as a fault situation. In case
supervision is disabled for a Control Input, the resistors
can be omitted and the switch can be wired directly to
the input connector.
2.9
Control Outputs (step 7)
Connect the Control Outputs 1..8 (4 and 5) that are
needed as described in section 1.3.
l
figure 2.1: Supervised Control Input contacts
10 k
10 k
