1MRS755014
SPA-ZC 302
61
Profibus-DPV1/SPA Gateway
Installation and Commissioning Manual
8.
Maintenance and service
8.1.
General about service
If the SPA-ZC 302 module or part of it is found to be faulty, the normal service
operation is to replace the entire module. For more details, refer to the ordering
information.
8.2.
Custom configurations
There may arise situations when no existing configuration fulfils the requirements
of the application. In these cases, our customer support organization offers service
by creating new standard configuration templates. The new configuration is then
included with the next release of the product CD as a standard configuration, if it is
also relevant to other users.
To be able to sufficiently prepare a service request, the following procedure should
be followed:
1. Look in the relevant protection relay manuals for SPA parameters that contain
information that is necessary for the application.
2. Contact customer support at ABB OY, Substation Automation and send in the
information.
3. Customer support will make an offer, based on the provided information.
4. If the offer is accepted, the configuration will be built, tested and documented.
The following data is required:
• What protection relay is to be supported (for example: REM543R or several
relays)
• SPA parameter data of the signals wanted (for example: 48O6)
• Description of the signal (For example: Cooling time in seconds)
• The order of the parameters, in case it is important
8.2.1.
Limitations
There are some limitations that affect the way the standard configurations are made:
• 244 bytes of input, 244 bytes of output or totally 416 bytes of data bandwidth is
available for input or output. The reason for the limitations is limits in the
Profibus protocol specification and the implementation of it. Consequence of this
limitation is that it is possible to transfer only a certain amount of cyclical
parameter data over Profibus from each device. It can be assumed, as a guideline,
that each analog data need four bytes, and each digital data one byte of data
bandwidth.
• The larger the number of signals, the longer will the update cycle be.
When building the multislave configurations, the total template size
value in PCT is limited to 240. A warning message is displayed in
PCT if the limit is exceeded.
