Integrated Bus
Operation manual POSIDYN® SDS 5000
ID 442289.06
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KEEP
THINGS
MOVING
105
11
11.4.7
Security
Here,
Security
means protection against the unauthorized manipulation of data.
Security-relevant parameters of an inverter can also be changed via remote maintenance. The following
security mechanisms have been installed to prevent this from being done by unauthorized parties or by
accident:
•
A remote maintenance procedure can only be started locally on the machine.
•
The service technician who performs remote maintenance must know the serial number of the inverter
which is to be serviced.
•
When the
Session-ID
option is selected (parameter
A168 remote service with session-ID
), the person
responsible for the machine must inform the service technician of the temporarily valid session-ID. This
appears on the inverter display while remote maintenance is being activated or in parameter
A151
.
These three mechanisms prevent unauthorized access for all practical purposes. However, a small element
of risk of unauthorized access remains here (e.g., through a former worker who is intent on sabotage). With
a great deal of effort, this worker might still be able to establish a connection at the time of the request before
the service technician, if this worker knows this point in time.
Such an unauthorized access is indicated as follows,
•
The remote maintenance LED is continuously on
•
The connection request of the authorized service technician fails.
Use of a session ID is a little more trouble, but it prevents this from happening.
An outgoing connection is always established when there is a local request on the machine. This always
connects to the Teleserver (see Figure 11 19). No other connections are possible. In addition, it is impossible
to establish an Internet connection to the SDS 5000 if the connection was not requested on the SDS 5000.
Fig. 11-19: Remote maintenance via the Teleserver
Summary of Contents for POSIDYN SDS 5000
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