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Communication-capable Circuit Breakers
WL Circuit Breaker
Data Availability on the CubicleBUS
All modules connected to the CubicleBUS can request
data from other modules via the bus and generate data
themselves that can be read by other modules.
Each data point in the comprehensive WL Circuit Breaker
data dictionary can only be generated by a single
module—the data source. If this data source (module)
exists, the data points assigned to it also exist.
This information is described and communicated in the
property bytes.
Data point group
Data points with the same source
Protection parameter set A
Protection parameter set B (N/A for ETU745 or 748)
Extended protection parameters
Parameter for setpoints
PROFIBUS communication parameters
Parameters for metering settings
Device identification data
Circuit breaker position specifications
Status info. (circuit breaker open/closed,
storage spring, etc.)
Alarms
Trip log
Setpoint messages
Maintenance information
Circuit breaker temperature
Temperature in the cubicle
3-phase currents
Current in neutral, ground-fault current; equip. spec.
3-phase voltage
Power KW, KVAR, KVA
Power factor
Frequency, total harm. distortion, form factor, crest factor
Harmonic analysis
Waveform buffer
Event log
System time
Table 2-2 The table shows which data points from the data dictionary are generated by which CubicleBUS module,
enabling you to quickly find out which modules are required for which system.
2/7
If a data source (module) does not exist, the data point
does not exist either.
Again, the relevant property byte contains this
information.
The following table provides an overview of the internal
CubicleBUS modules and the data point groups (collection
of several data points) assigned to them.
The complete Data Dictionary with a detailed description
of the individual data points is available upon request.
Contact your local sales office.
CubicleBUS
ETU745, 748,
BSS
755 or 776
WL PROFIBUS Communication and Electronic Accessories • July 2004
Modules
COM15
Metering
Metering
Function
Function Plus
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