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Installation
5
Accessories
48 | 124
Building Technologies
Fire safety
Installation:
WARNING
Electrical voltage
Before installation with output card (4M):
●
Switch off the panel's power supply.
●
Disconnect power cable at the terminal '20-30V' on the output card (4M)
Detailed information on installation is available in document A6V10431015. See
chapter 'Applicable documents [➙ 9]'.
Technical:
●
Max. current of each output: 1.0 A @ DC 26 V
●
Max. current of total outputs: 2.0 A @ DC 26 V
●
Each line must be terminated with EOL element (Resistor 2.2 kΩ / 1 W /
0.5 %).
●
Additional technical details if option creeping open / creeping short is activated:
–
When the output is configured as RT fire, sounder line, fire control, max.
line resistance is 74.3 Ω; min. sounder voltage is DC 16 V.
–
When the output is configured as RT fault, the resistance scope is
350 Ω ~ 2500 Ω.
Configuration:
Refer to chapters 'Add output card (4M) [➙ 105]' and 'Calibrate output card (4M)
[➙ 93]'.
Checking the line resistance depending on the required current
It must be calculated to ensure the supply of the connected devices is met.
The picture shows the dependence of the line resistance (R Line) in relation to the
device voltage (U
), the available output current (I
min
current of the connected devices (I Load).
Figure 22: Connection of the line resistance and EOL
Procedure for determining the maximum available device current (I Load):
1. Determine the line resistance R Line:
–
Configuring: Refer to chapter 'Calibrate output card (4M) [➙ 93]'
–
'Engineering' > 'Calibrate 4M card line' > 'Output' 1-n > 'Calibrate EOL'
2. Detecting the voltage U
3. Verification: Are all parameters satisfied for the correct operations?
max
as per the device datasheet.
min
) and the minimum required
A6V10421795_en--_g
2016-11-18
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