25
Building Technologies
048_DMS_DF8000_ICC_MP4.15_A6V10081388_c_en.doc
Fire Safety & Security Products
06.2008
7
DF8045/46 – 4 supervised input modules
The DF8045/46 4-input modules, illustrated in Fig. 21, are the modules of the I/O
family for supervised digital input. As the other modules, they can be connected to
a CPU module via the local I
2
C bus.
The DF8003 CPU can address up to six DF8045/46 modules with I
2
C address 1 to
6.
Fig. 21 DF8045 and DF8046 module
Note
The module is equipped with one line of 8 terminals, at the bottom, num-
bered from 1 (left) to 8 (right). The top line of terminals is not used, refer to Fig.
24.
7.1
DF8045 – NC inputs
The DF8045 input module provides 4 supervised inputs for normally closed con-
tacts. The module will provide the following information for each of the 4 inputs:
normal operation (contact closed), alarm (contact open) and tamper (cable short or
open).
Input line supervision is accomplished through the use of two resistors (4.7 KOhm
and 1.5 KOhm). Each input is connected to the module through 2 screw terminals
as shown in Fig. 22 below. Line resistance must be less than 500
Ω
.
