Power Supply - Siemens DF8000 Installation Function & Configuration Commissioning Safety Regulations

4.3

Power supply

Internal circuits (2-3)
Building Technologies
Fire Safety & Security Products
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
External circuits
Max. current absorption for 6 mod. (int. @ 13,8V)
Max. current absorption for 6 mod. (int. @ 27V)
Max. current absorption for 6 mod. (ext. @ 13,8V)
Max. current absorption for 6 mod. (ext. @ 27V)
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.
18 17
FLT
TX
RX
PWR
RST
1 2
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
11... 33 VDC
11... 33 VDC
220 mA (all I/O active); 75 mA (no I/O active)
140 mA (all I/O active); 60 mA (no I/O active)
400 mA (all I/O active); 25 mA (no I/O active)
450 mA (all I/O active); 30 mA (no I/O active)
16 15 14 13 12 11 10
1 8
DF8003
CPU
1
3 4 5 6 7 8 9
048_DMS_DF8000_ICC_MP4.15_A6V10081388_c_en.doc
External circuits (4-5)
17
06.2008