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AYK550-UH User's Manual
and
REF
negative.
Parameter
1003
1003
1003
N2 Protocol Technical Data
Overview
The N2 Fieldbus connection to the AYK550 drives is based on an industry standard
RS-485 physical interface. The N2 Fieldbus protocol is a master-slave type, serial
communication protocol, used by the Johnson Controls Metasys® system. In the
Metasys architecture the N2 Fieldbus connects object interfaces and remote
controllers to Network Control Units (NCUs).
The N2 Fieldbus can also be used to connect AYK550 drives to the Metasys
Companion product line.
This section describes the use of the N2 Fieldbus with the AYK550 drives'
connection and does not describe the protocol in detail.
2). Note, fieldbus references are bipolar, that is they can be positive or
Value Setting
1 (
)
DIRECTION
FORWARD
2 (
)
DIRECTION
REVERSE
3 (
)
DIRECTION
REQUEST
YORK Drives Profile
AI Reference Scaling
Max. Ref
Fieldbus
Reference
-163%
-100%
-(Max. Ref.)
Max. Ref
Fieldbus
-163%
-100%
Reference
-(Max. Ref.)
Max. Ref
-163%
-100%
Fieldbus
Reference
-(Max. Ref.)
Resultant Ref.
163%
100%
Resultant Ref.
163%
100%
Resultant Ref.
163%
100%
Serial Communication – EFB
167
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