76 ACH580 E-Clipse bypass and packaged drive user manual
Embedded fieldbus
Control interface
In general, the basic control interface between the fieldbus system and the drive
consists of:
Note: The words “output” and “input” are used as seen from the fieldbus controller
point of view. For example an output describes data flow from the fieldbus controller
to the bypass.
Mechanical and electrical installation – Embedded Fieldbus (EFB)
Warning! Connections should be made only while the bypass is disconnected from
the power source.
Bypass terminals 26…30 are for EIA 485 communications.
• Use Belden 9842 or equivalent. Belden 9842 is a dual twisted, shielded pair cable
with a wave impedance of 120
Ω.
• Use one of these twisted shielded pairs for the EIA 485 link. Use this pair to
connect all A (-) terminals together and all B (+) terminals together.
• Use both of the other wires in the other pair for the reference/common
(terminal 29).
Protocol Control Interface Reference for more information
Modbus • Output Words
– Control word
– Reference1
– Reference2
• Input Words
–Status word
– Actual value 1
– Actual value 2
– Actual value 3
– Actual value 4
– Actual value 5
– Actual value 6
– Actual value 7
– Actual value 8
The content of these words is defined by profiles. For
details on the profiles used, see Modbus protocol
technical data – Drive only starting on page 138
N2 • Binary output objects
• Analog output objects
• Binary input objects
• Analog input objects
N2 protocol technical data – system on page 100 and
Bypass overview on page 109
BACnet • Device management
• Binary output objects
• Analog output objects
• Binary input objects
• Analog input objects
BACnet protocol technical data – system on page 114
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