Siemens FS20 Mounting & Installation page 234

Mounting and installation of the compact control panels
5
Remote EVAC-NL and EVAC-NL mimic display driver
Remote (mimic) EVAC, 20 zones
RS485 (FCA2002-A1)
Usys (Peripherieboard 2-/4-Loop)
234 | 354
Building Technologies
Fire Safety
Example of using the diagram
Two remote EVAC-NL indicators, one with 20 zones, the other with 30 zones, are
supplied by the periphery board of the same ↑ station.
20 pin
Figure 128: Wiring example for calculating the cable resistance
Number of zones via the same supply cable: 50 (20 from panel 1 and 30 from
panel 2)
According to the diagram, this results in the following values for the EVAC-NL
mimic display driver:
● Maximum cable resistance R' is 10 Ω (curve 1)
● Maximum current is 0.85 A (curve 4)
In the same way, this would result in the following for a remote EVAC-NL indicator:
● Maximum cable resistance R' is 22 Ω (curve 2)
● Maximum current is 0.4 A (curve 3)
Remote (mimic) EVAC, 30 zones
mimic display driver
FT2003-N1
X4
34 pin
FTI2002-N1
Connector
board
X2
X3 3 x 34 pin
X1
X5
mimic display driver
FT2003-N1
X4
34 pin
FTI2002-N1
Connector
board
X2
X3 3 x 34 pin
X1
X5
mimic display driver
FT2003-N1
X4
34 pin
FTI2002-N1
Connector
board
X2
3 x 34 pin
X3
X1
X5
FTO2007-N1
X402
Operating unit
'Master' X400
X1
Synoptic panel
FTO2007-N1
X402
Operating unit
X400
'Slave'
X1
Synoptic panel
FTO2007-N1
X402
Operating unit
'Slave' X400
X1
Synoptic panel
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2016-01-27