Honeywell ACS-8 Installation Instructions Manual page 135

Installation Instructions / ACS-8
Calculation of the lines of the module bus connected to the ACS-8 when using in/output modules:
Given facts:
Current consumption of the contactless / proximity reader and the I/O-module
Current consumption of a universal fail save door strike 019 040
R max. Line
i = 56
Cat 5e = 8 x 0.51mm
J-Y(St)Y 2 x 2 x 0.6mm
J-Y(St)Y 2 x 2 x 0.8mm
NYM 5 x 1.5mm²
U
drop
=
I
module
m
S * mm²
A = 0.2mm² per wire
A = 0.28mm² per wire
A = 0.5mm² per wire
L
º L = R * i * A
R =
i * A
B
A = d²
4
135
= 300mA
= 240mA