Bosch C900V2 User Manual

Conettix C900V2 | Installation Guide | 

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Bosch Security Systems, Inc. | 8/08 | F01U087780-01 

7

 

The C900V2 has three inputs monitored by analog-
to-digital (A/D) converters: 
•  Input 1 (IN1): Used as an end-of-line (EOL) 

supervised loop. If input status reports are 
enabled by the receiver using the Conettix 
D6200 Programming/Administration Software 
(referred to as D6200 Software), any voltage 
below 1.66 VDC is sent as a short-circuit 
message to the D6600. Any voltage above 
3.33 VDC is sent as an open-circuit message. 
Input 1 must be EOL-terminated with a 10 k  
resistor. Refer to the D6600/D6100i Computer 
Interface Manual (P/N: 4998122703) for Event 
Messages to automation software.  

•  Input 2 (IN2): Used for Intercept Inhibit. If Input 

2 rises above 5.5 VDC, the C900V2 is 
immediately forced into Fallback Mode for at 
least 2 minutes. Input 2 must go low for at least 
5 seconds to be considered low. If Input 2 is 
not used, allow it to remain disconnected. 

•  Input 3 (IN3): Used for Intercept Override. If 

Input 3 rises above 5.5 VDC for 5 seconds, the 
C900V2 enters Fallback Mode. If Input 3 goes 
low, the C900V2 returns to Intercept Mode. If 
this input is connected to a ground start relay 
output, the C900V2 remains in Intercept Mode, 
except to allow the dialer to dial. Input 3 cannot 
force Intercept Mode if the C900V2 is in 
Fallback Mode because of an error, a 
command, or a high signal at Input 2. If this 
input is not used, allow it to remain 
disconnected. 

 

 

You cannot use Inputs 1, 2 and 3 for UL 
Fire Listing. You can use the inputs for 
other purposes. 

 

 

OUT4

0V

OUT3 OUT2 OUT1

OUT1 IN3

IN2

IN1 – V +

0V

 

 

The C900V2 has four relay contact outputs: 
•  Output 1 (OUT1): Active (open) when the CPU 

works properly. If the CPU fails or loses power, 
Output 1 closes. 
Connect Output 1 from the C900V2 to a  
24-hour zone on the control panel. This  
24-Hour Zone Alarm report enables the digital 
dialer, if used, to indicate or sound a failure if 
the C900V2 CPU fails. 

•  Output 2 (OUT2): Active (open) when the 

receiver works properly, and closed when the 
receiver does not respond to or acknowledge a 
message sent from the C900V2. 
Connect Output 2 from the C900V2 to a  
24-hour zone on the control panel. This  
24-Hour Zone Alarm Report enables the digital 
dialer, if used, to indicate or sound a failure if 
the network communications path fails. 

•  Output 3 (OUT3): Active (open) when the 

C900V2 is in Intercept Mode. 

•  Output 4 (OUT4): Controlled by a command 

from the D6200 Software or receiver. The 
default is open. 

 

Terminal Description 
V (+) 

Connect regulated 12 to 24 VDC power to 
this terminal and the – V terminal. This 
power can be supplied by a separate power 
supply or auxiliary power from the control 
panel. 

V (–) 

12 to 24 VDC return. 

 

Connect to earth ground. 

 

Use two of the RJ-45 telephone connectors to 
connect to the control panel and to the PSTN. The 
connector pins are identified in Table 2 and 
Figure 7. 

 

 

Pin Connection 
1 

T1 

4 T 
5 

R 

8 

R1 

 

 

1

1

1

1

1

1

1

8