General Technical Specifications
1-6
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
cuULu requirements on hazardous location on the battery power supply for
CPUs
The power supply to the backup battery of a CPU must be via a non–incendive
plug. The figure below portrays the concept of such connection.
Battery or
Power supply unit
CPU with connector
“ext. batt.”
Cc = Cable capacity
Lc = Cable inductance
Figure 1-1
Power supply to the backup battery
The following conditions apply to the performance characteristics of this
connection:
Voc (no load voltage) = 15V
Vmax = 15V
Isc (short–circuit current )= 50 mA
Imax = 50 mA
Ca = Battery capacity/
Ci = 25 nF maximum
power supply
La= Battery inductance/
Li = 2 mH maximum
power supply
The battery/power supply which supplies the non–ingnitable connection must have
the following values:
Battery/Power supply
CPU iput “Ext. Batt.” incl. cabel
Voc
≤
Vmax (15V)
Isc
≤
Imax (50 mA)
Содержание Simatic M7-400
Страница 10: ...Preface x S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 122: ...Power Supply Modules 3 42 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 362: ...Analog Modules 5 146 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 384: ...Interface Modules 6 22 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 428: ...RS 485 Repeater 10 8 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 496: ...M7 400 Expansions 12 26 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 562: ...Interface Submodules 13 66 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 574: ...Parameter Sets for Signal Modules A 12 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 594: ...Diagnostic Data of the Signal Modules B 20 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 598: ...Spare Parts and Accessories C 4 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
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