Connecting
5.1 Wiring
SIMOTION C
Operating Instructions, 02/2012
93
Protection from external electrical influences
The following table identifies the considerations required for protection against external
electrical phenomena or faults.
Table 5- 4
Protection against external electrical phenomena
Scope
Requirement
All plants or systems in which the
SIMOTION C or S7-300 is installed
The equipment or system is connected to a protective
conductor to discharge electromagnetic interference.
Supply, signal, and bus lines
The wiring arrangement and installation complies with
EMC regulations.
Signal and bus lines
A wire or conductor strand break must not cause any
undefined installation or system states.
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.
DANGER
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.
