46
EVAC-NL mimic display driver FT2003-N1 [NL]
Pin assignments
272
Building Technologies
008837_q_en_--
Fire Safety
14.05.2012
46.3
Pin assignments
46.3.1
Cable length and cable resistance
If using a remote EVAC-NL indicator and the EVAC mimic display driver, the length
of the power supply cable is limited if the component is supplied internally via the
periphery board.
The diagram below can be used to determine the maximum cable lengths for both
cases.
The following cable is specified for the power supply:
No shielding
Twisted pair cable
With at least 10 twists.
Please refer to the data for the corresponding component for the maximum RS485
interface cable length.
x10 zones
R
'
c
a
b
le
[
O
h
m
]
C
u
rr
e
n
t
[A
]
2
3
4
1
1
2
3
4
5
6
7
8
9
10
0
20
40
60
80
100
120
0.0
0.3
0.6
0.9
1.2
1.5
1.8
Diagram for calculating the max. cable resistance
1
Max. cable resistance R' for EVAC-NL mimic display driver
2
Max. cable resistance R' for remote EVAC-NL indicator
3
Max. current for remote EVAC-NL indicator
4
Max. current for EVAC-NL mimic display driver