Manual 37443A DSLC-2 - Digital Synchronizer and Load Control
© Woodward Page 175/226
Chapter 8.
Network / System Description
Introduction
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The new DSLC-2 / MSLC-2 system provides within one network following features:
• The maximum number of DSLC-2s (Generator) can go up to 32.
• The maximum number of MSLC-2s (Utility- or Tie-breaker) can go up to 16.
• The maximum number of segments is 8.
The DSLC-2 still cares about the generator breaker and the MSLC-2 cares about utility breaker or a tie-breaker.
The DSLC-2 and MSLC-2 can reside at different segments. A segment is defined as the smallest undividable bar
in a system. Segment connectors inform the DSLC-2s and MSLC-2s which generators and utilities are connected.
Through the segmenting the DSLC-2 / MSLC-2 can recognize all the time with which other units they are inter-
connected. So the DSLC-2s in the same segment are load share together or doing an independent load control.
The MSLC-2s can be configured to utility breaker mode or to tie-breaker mode. In each case it is only allowed to
have one MSLC-2 in one segment running as master control. A MSLC-2 gets a master control when base load
control, export/import control or process control is activated. If multiple MSLC-2s are in the same segment, the
control with the lowest device number will be master.
Description
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Beside the upper described restrictions there are existing additional rules for the successful operation of the
DSLC-2 / MSLC-2 system. Please read this rules and compare it with your planned application.
• The segment numbers have to follow a line, which can finally be closed to a ring. A segment branch is
not allowed.
• There can be placed several MSLC-2 in one segment, but only one MSLC-2 can run as Master control.
• The generator is not counted as a segment.
• The utility is not counted as a segment.
At next will be shown some examples of applications for a better understanding the philosophy of the segment-
ing.
Applications Without Segmenting
In some applications there is no segmenting to make because the common busbar of DSLC-2 and MSLC-2 can-
not be separated. In this case in Menu 5, Basic segment number (parameter 4544) is configured to 1 at each unit.
The Device number (parameter 1702) needs still to be different because it determines the network addressing. See
Figure 8-1 and Figure 8-2 for examples which need no segmenting.
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