
Praesideo PRS-CSM / PRS-CSRM / PRS-CSKPM en | 9
Bosch Security Systems B.V.
IUI PRS-CS(R)(KP)M | V1.0 | 2013.12
Installation and User Instructions
1.2.5 Control input/outputs (5, 6)
These two 6-pin connectors provide the connection of
one control input for the PTT key and five control
outputs for indicator LEDs.
The PTT input contact on this connector is in parallel
with the PTT input contact on connector 2. Use only
one of them.
See figure 1.9 for a connection diagram. The two
resistors must be placed in the circuit, because the
contact is always supervised by the system software.
In figure 1.10 the LED driver circuit is shown.
Typical colors for the indicator LEDs are:
• Green for power and call status indicators;
• Yellow for fault and system fault indicators;
• Red for the emergency indicator.
table 1.5: Control inputs/outputs connector details
Pin Signal
1 PTT input contact
2 GND
3 LED Power Indicator +/anode
4 LED Power Indicator -/cathode
5 LED Fault Indicator +/anode
6 LED Fault Indicator -/cathode
7 LED Call Status Indicator +/anode
8 LED Call Status Indicator -/cathode
9 LED Emergency Indicator +/anode
10 LED Emergency Indicator -/cathode
11 LED System Fault Indicator +/anode
12 LED System Fault Indicator -/cathode
Warning
Do not connect DC or AC signals to the control
inputs, otherwise the input circuit may be
damaged. Only use voltage-free contacts.
figure 1.9: Press-to-talk (PTT) key
GND
5V
PTT Input
Contact
10 kΩ
10 kΩ
10 kΩ
figure 1.10: Internally powered LEDs
Pwr: Power indicator
Fault: Fault indicator
Call: Call status indicator
Emg: Emergency indicator
Syst Fault: System fault indicator
+5V, 30 mA
62V 62V
3
4
6
8
7
10
9
12
11
5
Pwr Fault Call
Syst
fault
Emg
62V
62V
62V
330: 330: 330: 330: 330:
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