Gardner Denver Governor, Руководство пользователя

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Figure 15: Programmable IO Settings Screen
3.6 AirSmart System Operation
This section provides information on the operation of the AirSmart sequencing protocol. Note that
only the main features of the system are discussed and this should not be considered a full
description of the behavior.
When the system is first started, it will determine the master of the system. Any machine that is
enabled and has a system pressure transducer assigned is capable of being a master. The
machine with the largest capacity that is master-capable will always become the master of the
system. If multiple master-capable machines have the same Capacity setting, the one with the
lowest Unit Number will become the master. Once the master has been decided, it will be
automatically rotated to other machines based on the following conditions:
1. A new master-capable machine with larger capacity comes online.
2. The run hours of the master machine exceeds the run hours of a slave machine of equal
capacity by more than the Transfer Interval setting. (Note that the Hours Offset setting is also
taken into account.)
The master machine will begin running and producing air when the system pressure falls below
the Load Pressure setpoint. After loading, it will accelerate to try to maintain the system pressure
at the target pressure. Other machines will be brought on and off load according to the rules
below:
1. If there are slaves available to run that are not loaded, the master will keep the system
running at or below the Transfer Load Increment percent load. All of the variable speed
machines will run off of the master’s speed command. If the system falls below the Load
Pressure setpoint, the master will command the next slave unit to load. If needed, more
machines will be asked to load, waiting Transfer Interval seconds between each machine. If