Siemens SIMOTION C 230-2 Operating Instructions Manual page 93

Protection from external electrical influences
The following table identifies the considerations required for protection against external
electrical phenomena or faults.
Table 6-4
All plants or systems in which the SIMOTION
C or S7-300 is installed
Supply, signal, and bus lines
Signal and bus lines
Rules for current consumption and heat loss in a central configuration
The I/O modules on the I/O bus take the current required for their operation from the I/O bus as
well as, when necessary, from an external load power supply.
• The current consumption of all I/O modules from the I/O bus must not exceed 1.2 A. This is
the current that the SIMOTION C can supply on the I/O bus.
• 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 current consumption of the
SIMOTION C, the connected I/O modules and any other connected loads fed by the load
power supply.
• The power loss of all components used in a cabinet must not exceed the maximum 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 current consumption and heat loss of a module in the technical
data of the corresponding modules.
All interfaces of the SIMOTION C must operate only on circuits with safety extra-low voltage
(SELV).
Pulling out and inserting I/O-bus I/O
I/O-bus I/O must not be pulled out or inserted during operation.
Note
The I/O bus will not work if I/O-bus I/O are pulled out during operation. The SIMOTION must be
switched off and back on again when these are reinserted.
SIMOTION C
Operating Instructions, 11/2022, A5E33441428B
Protection against external electrical phenomena
Scope
DANGER
Requirement
The equipment or system is connected to a protective
conductor to discharge electromagnetic interference.
The wiring arrangement and installation complies with
EMC regulations.
A wire or conductor strand break must not cause any
undefined installation or system states.
Connecting
6.1 Wiring
93