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Transfer Interval
– Units: Hours – Default Value: 1 Hour – The transfer interval is used to control how
frequently the Leader role is transferred on the sequencing network. This value specifies how many more
total hours a machine needs before it should release Leader control and become a Lag compressor. This
parameter must be the same for all machines that are going to be sequenced together.
The transfer logic operates as follows. Machine A and Machine B are sequenced and both have 100
hours. They will use the unit number to decide who becomes leader. The transfer interval for both of
these machines will be set to 1 hour. We will assume Machine A becomes the leader and begins running
which will increase its total hours. Machine A will allow Machine B to become leader only when it
accumulates 101 hours of runtime, then Machine B will become leader, and only allow Machine A to
become leader when it has 1 more hour than Machine A, or 102 hours in this example.
Lag Start Delay
– Units: Seconds – Default Value: 10 Seconds – The Lag Start Delay sets the amount of
time the leader will wait before asking another compressor to come online. This takes into account the
amount of time it takes a compressor to startup and begin producing air after it is asked to start.
Transfer Load Increment
– Units: Percentage – Default Value: 80% - Transfer Load Increment sets the
maximum speed a compressor will run at before asking another compressor to come online to meet plant
demand. This value must be the same across all compressors in the sequence.
Transfer Load Decrement
– Units: Percentage – Default Value: 50% - Transfer Load Decrement sets
the minimum speed a compressor will run at before asking another compressor in the sequence to go
offline to meet plant demand. This value must be the same across all compressors in the sequence.
Sequence Time Offset
– Units: Hours – Default Value: 0 Hours – Sequence Time Offset increases the
number of hours a compressor will report it has to other compressors in the network. This can be used to
synchronize maintenance schedules between multiple machines.