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Building Technologies
048_DMS_DF8000_ICC_MP4.15_A6V10081388_c_en.doc
Fire Safety & Security Products
06.2008
4.3
Power supply
A local DC power supply (11... 33 VDC) is required for each unit.
Internal and the external circuits should receive separate input voltages and the
CPU module has two separate power supply inputs, as illustrated in Fig. 9. The
first supplies the CPU and the internal I/O circuits (terminals 2-3), whereas the
second one is used to supply the external I/O circuits (terminals 4-5).
Power supply can range from 11 to 33 VDC, stabilised (see Tab.8).
Internal circuits
11… 33 VDC
External circuits
11… 33 VDC
Max. current absorption for 6 mod. (int. @ 13,8V) 220 mA (all I/O active); 75 mA (no I/O active)
Max. current absorption for 6 mod. (int. @ 27V)
140 mA (all I/O active); 60 mA (no I/O active)
Max. current absorption for 6 mod. (ext. @ 13,8V) 400 mA (all I/O active); 25 mA (no I/O active)
Max. current absorption for 6 mod. (ext. @ 27V)
450 mA (all I/O active); 30 mA (no I/O active)
Tab.8.
DF8003 power supply
The CPU modules are equipped with two lines of 9 terminals:
the bottom line is numbered from 1 (left) to 9 (right) whereas the top one is num-
bered, in the opposite direction, from 10 (right) to 18 (left), refer to Fig. 9.
Fig. 9
Power supply
EMI filters on the DF8003 are dimensioned for the documented power supply rat-
ings.
Important: DIN rail must have a good earth connection to ensure proper operation
of EMI filters
10
11
12
13
14
15
16
17
18
9
8
7
6
5
4
3
2
1
1
DF8003
CPU
1
8
FLT
TX
RX
PWR
RST
External circuits (4-5)
Internal circuits (2-3)
Содержание DF8000
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