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SECTION 1
GENERAL INFORMATION
Compressor sequencing on the AirSmart G2 allows up to 8 compressors to work together to meet plant
demand without the need for an external controller. While under sequence control one compressor will
assume the role of “Leader” and will force other compressors into a “Lag” mode. The leader will be the
first compressor to load if system pressure drops below the load pressure, and will command Lag
compressors to load if it cannot meet plant demand alone.
Note:
The minimum firmware version supporting sequencing on the AirSmart G2 is
Firmware Version
1.4
or higher. To check the current firmware version installed on the compressor, enter a maintenance
level or higher password and navigate to the following path.
PATH
: Machine Configuration->AirSmart Controller->Controller Firmware Version(s)
If the version is less than 1.4, contact Gardner Denver for the most recent version of the firmware along
with update instructions.
In order to be capable of acting as the Leader of the sequencing group, the compressor must have a
system pressure transducer installed and be set to
Sequenced
mode. The system pressure transducer is
a pressure sensor typically installed in the control box and plumbed to the system receiver. When running
in sequence mode, the leader uses only this transducer to modulate all sequenced machines. The system
pressure transducer should take a pressure reading from the receiver that all sequenced machines are
connected to, as shown in
Figure 1-1 - Sequencing Pressure Connections.
Figure 1-1 - Sequencing Pressure Connections
