Johnson Controls York AYK550 - Serial Communication - EFB; Overview and Configurations

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The AYK550 can be set up to accept control from an external system using standard
serial communication protocols. When using serial communication, the AYK550 can
either:
• Receive all of its control information from the fieldbus, or
• Be controlled from some combination of fieldbus control and other available
control locations, such as digital or analog inputs, and the control panel.
Two basic serial communications configurations are available:
• EFB (embedded fieldbus) – Using the RS485 interface at terminals X1:28…32 on
the control board, a control system can communicate through the drive’s standard
EFB using one of the following protocols (For protocol descriptions, see "Modbus
Protocol Technical Data", "YORK Drives Profile Technical Data", etc. starting on
page 152.):
– Modbus®
– Metasys® N2
– APOGEE® FLN
– BACnet® requires factory download.
– FBA (fieldbus adapter) – See "Serial Communication – FBA" on page 193.
– Lon Works and others.
Fieldbus
Fieldbus Controller
Other Devices
Connect using either:
•
Standard EFB (embedded fieldbus) at
terminals X1:28…32
•
FBA (fieldbus adapter) module mounted
in slot 2 (option Rxxx)