Gardner Denver Governor, Руководство пользователя

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Figure 3: Example RS485 configurations of the Master/Slave controls for communications
2. Supported Protocols
The Governor™ controller will communicate with several different Gardner Denver sequencing protocols.
For new installations, any mode may be used and selected based on the features of the installation. This
section provides some basic information on each protocol to help you determine the best option for your
system. Once you have selected the best protocol for your application, refer to the detailed instructions in
the following sections specific to that protocol.
2.1 AirSmart Protocol
The AirSmart protocol is the native protocol for fixed and variable speed compressors using the
AirSmart or AirSmart G2 controller. If you are connecting to other Gardner Denver compressors
with these controllers, the AirSmart protocol should be used to allow for direct and optimal
sequencing control. The AirSmart protocol is uniquely designed to handle sequencing and load
sharing of variable speed compressors or a mix of up to 8 variable speed and fixed speed
machines. It also features the ability to use a dedicated system pressure input to sample a true
network delivery pressure.
The system will automatically determine the master of the network based on machine size and total
hours. In addition, all variable speed machines will be run at the same load percentage based on
the master’s command to optimize system pressure and equalize load across all running units. If
the set maximum load percentage for the network is met and more machines are required to meet
demand, machines will be started in a controlled manner before allowing the system to run all
machines at 100% capacity. Likewise, if all running machines are operating at the set minimum