Woodward DSLC-2 - DSLC-2; MSLC-2 Systems; Figure 1-2: Multiple Generators in Isolated Operation with Tie-Breaker

Manual 37443A DSLC-2 - Digital Synchronizer and Load Control
© Woodward Page 15/226
DSLC-2 / MSLC-2 Systems
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The network addressing of the DSLC-2 / MSLC-2 allows up to 32 DSLC-2s and 16 MSLC-2s in an application.
A DSLC-2 and MSLC-2 application can handle 8 segments. Discrete inputs inform the DSLC-2s and MSLC-2s
which segments each generator and utilities are operating on. If a MSLC-2 receives a discrete input to activate
segment 1 and 2, it will share this information with all controls over the Ethernet bus. It is not necessary to pro-
vide a segment activation discrete input to all controls. Segmenting allows the DSLC-2s and MSLC-2s to remain
connected thru the Ethernet bus, but be operating on separate load buses.
The DSLC-2 / MSLC-2 system can be applied according to following rules:
• The maximum number of DSLC-2s (Gen-CB) is 32.
• The maximum number of MSLC-2s (Utility- or Tie-CB) is 16.
• The maximum number of segments is 8.
• The segment numbers have to follow a line, which can finally be closed to a ring.
• Only one MSLC-2 can be used as master control, when multiple MSLC-2 are resided in one segment.
o The MSLC-2 with the lower device number will control if multiple Utility MSLC-2s are active
on the same segment
• The generator is not counted as a segment.
• The utility is not counted as a segment.
NOTE
If different MSLC-2s, located in different segments, are connected via a tie-MSLC-2, more than one
MSLC-2 is now located in the same segment. The result is the MSLC-2 with the lowest device number
becomes the master of all MSLC-2s located in this segment.
Examples:
Figure 1-2: Multiple generators in isolated operation with tie-breaker