Siemens SIMOTION C230-2 Equipment Manual page 81

Protection against external electrical phenomena
The following table shows you what you have to observe in order to ensure protec-
tion against electrical phenomena or faults.
All plants or systems in which SIMOTION C
or S7-300 is installed
Supply, signal and bus lines
Signal and bus lines
Regulations for power consumption and heat loss of a central configuration
The I/O modules on the P-bus take the power required for their operation from the
P-bus as well as, when necessary, from an external load power supply.
S The power consumption of all I/O modules from the P-bus must not exceed
1.2 A. This is the power that the C230-2 can supply to the P-bus.
S PS 307 power supply modules are available for different loads (2 A, 5 A, 10 A).
The selection of the appropriate power supply depends on the sum of the power
consumption of the C230-2, the connected I/O modules and any other con-
nected loads fed by the load power supply.
S The heat loss of all components used in a cabinet must not exceed the maxi-
mum amount that can be dissipated from the cabinet.
Tip: When selecting the cabinet design, make sure that the temperature in the
cabinet will not exceed the permissible ambient temperature for the installed
components, even if the outside temperatures are high.
You will find information on the power consumption and heat loss of a module in
the technical data of the corresponding modules.
E Siemens AG, 2003 All rights reserved
SIMOTION C230-2, 04.2003 Edition
With ... make sure that ...
The plant or system is connected to a pro-
tective conductor to drain off electromag-
netic disturbances.
The wiring arrangement and installation
comply with EMC regulations.
A line or connector break must not lead to
any undefined plant or system states.
Wiring
6-81