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APPENDIX C
– SEQUENCING WITH CONNNECT 12 OR AIRSMART
GENERAL DESCRIPTION
- The AirSmart G2 is backwards compatible with the AirSmart G1 for
sequencing installations. To replace an AirSmart G1 controlled compressor with an AirSmart G2
controlled compressor minimal modification must be made. On the AirSmart G1, sequencing network
connections are terminated at terminal block P19 on the controller. On the AirSmart G2, sequencing
network connections are terminated via RJ-45 connector J6. When connecting an AirSmart G2 controlled
compressor to an existing sequence of AirSmart G1 controlled compressors, follow the instructions in this
manual for the pressure, electrical, and programming directions. Install the RJ-45 Splitter in the control
cabinet of the AirSmart G2 controlled machine and connect the controller to the splitter. Then, use the
included Screw Terminal RJ-45 (GDI Part No. 24CA7402) to terminate existing Belkin 3106A or similar
industrial RS-485 cable and connect to the RJ-45 Splitter. Follow
Appendix B
for wire termination
instructions.
The AirSmart G2 can also interface with the Connect 12 for sequencing operation. The Connect 12
controllers interface with compressors using a Modbus RS-485 interface. Follow the instructions in this
manual for the electrical connections. The Connect 12 will broadcast system pressure to all compressors
it is controlling, so pressure connections and transducer installation detailed in this manual can be
ignored. Install the RJ-45 Splitter in the G2 control cabinet and connect the G2 controller to the splitter.
Then use the included Screw Terminal RJ-45 (GDI Part No. 24CA7402) to terminate existing Belkin
3106A or similar industrial RS-485 cable and connect to the RJ-45 Splitter. Follow
Appendix B
for wire
termination instructions. When programming the G2 for sequence operation, the
Operating Mode
must
be set to
Connect 12
instead of
Sequenced
. When being controlled by a Connect 12, only
Capacity
and
Unit Number
are used for sequencing decisions and all other parameters under
Multi-Machine
Sequencing
can be left at their default values. Once the compressor operating mode is set to
Connect
12,
start the commissioning wizard on the Connect 12 controller to add the new compressor to the
network.
