Mounting Instructions

Connect external components
Automatic volume control module PCA2008-A1
7
166 | 173
A6V10430579_en--_b
7.13.2 Installation
Power supply DC 24 V
The DC 24 V power supply connection 'CN7' is used to supply the PCA2007-A1
with power.
DC 24 V power supply connector - 'CN7'
Pin
Description
Remark
1
DC 24 V
-
2
DC 0 V
-
Table 137: PCA2008-A1 DC 24 V power supply connector - 'CN7'
Connect the wiring of up to 4 'Automated volume control microphone' PCA2007-A1
to the microphone input connectors 'CN1' to 'CN4'.
Microphone input connectors - 'CN1' to 'CN4'
Pin
Description
Remark
1
Signal +
-
2
GND
GND reference voltage
3
Signal -
-
Table 138: PCA2008-A1 microphone input connectors - 'CN1' to 'CN4'
Connect the summed up analog audio signals output to the audio input signal of
the digital audio matrices.
Use always input 4 of the digital audio matrices for this function.
Microphone sum output connector - 'CN5'
Pin
Description
Remark
1
Signal +
-
2
GND
GND reference voltage
3
Signal -
-
Table 139: PCA2008-A1 microphone sum output connector - 'CN5'
The PCA2008-A1 reports a fault via a fault relay output.
A fault is reported in one of these cases:
● Open or short on the wiring to microphones
● No microphone is connected and the input is not deactivated
● PCA2007-A1 is not supplied with DC 24 V
Fault relay output connector - 'CN6'
Pin
Description
Remark
1
NO
Connected to Com - fault
2
Com
-
3
NC
Connected to Com - regular working mode
Table 140: PCA2008-A1 fault relay output connector - 'CN6'