EGCP-2 Engine Generator Control Package Manual 26174
142 Woodward
Changing the Priority of a Slave Unit—No Slaves On Load
MAINS
NETWORK ADDRESS #2
NETWORK PRIORITY #2
NO MAINS FAILURE DETECTED
ADDRESS: 1 2 3
OPER.
PRIORITY 1 2 3
MASTER 1
NEXT ON ALL
NEXT OFF
MASTER SEQUENCING SCREEN
SYSTEM LOAD = 0%
ALL GENERATORS OFF LOAD
G G
NETWORK ADDRESS #1
NETWORK PRIORITY #1
G
NETWORK ADDRESS #3
NETWORK PRIORITY #3
VIS-119
00-04-27
Figure 5-14. Changing the Priority of a Slave Unit
If a slave unit’s priority is changed in such a way as to simply shift that slave’s
place in the sequencing scheme without making the slave a New Master, then
one of two things will happen depending on that slaves place in the priority order:
1. The slave will simply take its place in the new sequencing order without
having to go on load.
2. The slave will have to go on load in order to properly assume its new priority
setting in sequencing system.
Case 1 will occur if the slave’s priority is changed either when there are no units
running, and no Loss of Mains detection has occurred, or if the slave itself is not
running due to system load levels not requiring the unit to be on line, and the
priority of the slave is decreased (taken to a higher numerical value).
MAINS
MAINS FAILURE DETECTED
OR RUN WITH LOAD AT MASTER
NEXT ON 2
G
NETWORK ADDRESS #1
NETWORK PRIORITY #1
NEXT OFF 3
NETWORK PRIORITY #2
NETWORK ADDRESS #2
G
ADDRESS: 1 2 3
MASTER 1
MASTER SEQUENCING SCREEN
PRIORITY 1 2 3
OPER. X
SYSTEM LOAD = 50%
NETWORK PRIORITY #3
NETWORK ADDRESS #3
G
VIS-120
00-04-27
Figure 5-15. Changing the Priority of a Slave Unit
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