
Praesideo PRS-CSM / PRS-CSRM / PRS-CSKPM en | 28
Bosch Security Systems B.V.
IUI PRS-CS(R)(KP)M | V1.0 | 2013.12
Installation and User Instructions
By replacing the LED with an optocoupler, external
loads can be switched, powered from an external
power supply.
3.2.3 Keypad interface (X5, X6)
A keypad module can be connected to a call station or a
call station module, or connected to a previous keypad
module. For the interconnection a 16-postion flatcable is
used, supplied with the keypad module. Up to 16
keypads and/or keypad modules can be connected in
series (loop through).
The connectors X5 and X6 are in parallel, so either one
of them can be used as incoming or outgoing
interconnection.
figure 3.4: Internally powered LED
3.3V
I < 22 mA
150 :
LED indicator
-/cathode
LED indicator
+/anode
Note
The maximum total load for all control outputs
together should be <64 mA.
figure 3.5: Component side PCB of the PRS-CSKPM
6
2
+
E
A
-
+
-
C
4
1
8
+
+
X811
S9
X6
12
15 16
X5
12
15 16
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