Siemens SIMATIC Manual page 43

Schematic circuit diagram of PS 305; 2 A
Figure 2-4
Line protection
The mains supply of the PS 305 power supply module (2 A) should be protected with a
miniature circuit-breaker (for example Siemens 5SN1 series) of the following rating:
● Rated current at 110 V DC: 10 A
● Tripping characteristics (type): C.
Reaction to atypical operating conditions
Table 2- 4 Reaction of the PS 305;(2 A) power supply module to atypical operating conditions
If ...
... the output circuit is overloaded:
•
I > 3.9 A (dynamic)
3 A < I ≤ 3.9 A (static)
•
... short-circuit at the output
overvoltage on primary side
undervoltage on primary side
S7-300 Module data
Manual, 06/2017, A5E00105505-AJ
2.4 Power supply module PS 305; 2 A; (6AG1305-1BA80-2AA0)
Schematic circuit diagram of power supply module PS 305; 2 A
... then ...
Voltage dip, automatic voltage recovery
Voltage drop, reduction of service life
Output voltage 0 V; automatic voltage recovery
after short-circuit is eliminated
risk of destruction
Automatic shutdown; automatic voltage recovery
Power supply modules
24 V DC LED
Flashing
off
-
off
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