Password Protection
All write actions that would result
in a change to the status or a
parameter in the circuit breaker are
password protected. This ensures
that parameters cannot be changed
and switching is impossible without
this password.
Note:
The electronic relays of the
COM15 module are required to
open and close the WL via the BDA.
The default password is
“sentron”
This can be changed by choosing
“Extras > Password” in the BDA tree
(recommended). You have to enter
the new password twice. When you
click OK, the BDA asks you for the
old password.
If you have forgotten it, it can be
reset by means of a master password.
To do so, contact Technical Assistance
at 1-800-964-4114
seainfo@sea.siemens.com
Operation Example
This example describes the
functionality of the BDA. If you want
to set the PROFIBUS address of the
COM15 module for a WL Circuit
Breaker, open the Communication
node by choosing “Device Parameters
> Circuit Breaker.” Then click the
input/output field next to the
PROFIBUS address and edit it with
the new address. Once you have
changed this parameter and exited
the field, the outline turns blue to
indicate parameters that have not
yet been transferred to the circuit
breaker.
You can then change other
parameters. If you want to transfer
the modified parameters to the
circuit breaker, click OK on this page.
If the parameter transfer process is
the first write action in this session,
the system prompts you to enter the
password. Once you have entered
the password successfully, the data
is transmitted to the circuit breaker.
If you want to reset the modified
parameters, click the “Undo” button.
If you exit the parameters page
without clicking OK, the changes
are ignored.
Printing
Since Java applets are used, the normal
print function in your browser on the
parameter pages will not provide a
satisfactory printout.
If you want to print the parameters
for documentation purposes, open
the pages to be printed from the tree
in the BDA. All the parameter pages
are displayed again under “Extras >
Print,” and you can print them
individually as required using the
print menu in your browser.
Comparing Parameters
The parameter comparison
function is used to check whether
the parameters set with the BDA
match those in the device. The
following parameters are checked:
• Protection parameters A and B
• Extended protection function
parameters
• Threshold value settings
• Measurement function settings
• Communication parameters
• Settings for the configurable
output module
The parameter comparison function
can be used, for example, to ensure
that the set parameters are transferred
without any errors once they have
been downloaded to the device.
It is not possible to determine
whether the parameters and settings
loaded to the device have actually
been transferred. This is because,
for example:
• BDA just forwards parameter
changes. Whether a parameter
is correct can only be verified in
the memory location (e.g. in the
trip unit). If this changes the value
because one has exceeded the
maximum value, for example,
the modified value is reported
back to the BDA. This discrepancy
would be detected when a
subsequent parameter comparison
is performed.
• In the BDA interface, not all values
regarding the differences between
minimum/maximum values and
other parameters are checked. This
means that a parameter could be
entered that cannot be copied in
the trip unit in its current form.
Breaker Data Adapter (BDA)
4/25
WL Circuit Breaker
WL PROFIBUS Communication and Electronic Accessories • July 2004
