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L3016
1SDH000559R0002
ABB SACE
SACE PR021/K
1.2.
Applicable scenarios
The following block diagrams show the applicable scenarios and the relationship between:
•
Protection units (Isomax, Emax or Tmax series)**
•
PR021/K unit
•
Communication units (Isomax, Emax or Tmax series)**
**: for Emax and Tmax series, the protection unit contains an internal communication unit (when required).
Connections between various units, depending on the scenario (Master or Slave mode) are shown as a guiding reference
only, therefore wiring must be carried out according to official ABB SACE documentation.
PR021/K
Signalling
unit
Protection unit
Local bus
PR021/K
Slave
PR021/K
Slave
Local bus
Protection
unit
PR021/K
Master
PR021/K
Signalling
unit
Local bus
Protection
unit
Communication unit
System bus
Remote supervision
system
“Master Mode” scenario:
“Slave Mode” scenario:
Mixed “Slave” scenario:
