WL Circuit Breakers - Siemens

Operating Instructions
WL Circuit Breaker
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/COM16 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
info.sea@sea.siemens.com
Operation Example
This example describes the functionality
of the BDA. If you want to set
PROFIBUS/MODBUS address of the
COM15/COM16 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/MODBUS 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.
The reason for this is as follows:
• The 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 to one that 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, all of the values are
not checked to confirm that they fall
between minimum/maximum values.
There are also other parameters that are
not checked. This means that a parameter
could be entered that cannot be copied
into the trip unit in its current form.
5/25 WL PROFIBUS/MODBUS Communication and Electronic Accessories