ABB AC 800M, Аппаратное обеспечение и эксплуатация

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Appendix A Hardware Units CI852 and TP852 – FOUNDATION Fieldbus H1 Interface
3BSE 027 941 R301 157
CI852 and TP852 – FOUNDATION Fieldbus H1 Interface
Key Features
• One FOUNDATION Fieldbus port provides a
communication speed of 31.25 kbit/s (FF H1)
• Transformer isolated
• No power consumed from the FF H1 bus
• No power is supplied to the FF H1 bus
• Simple DIN-rail mounting
• Pre-set, two letter Alpha code lock, see Table 6 on
page 54, installed in unit base to prevent incorrect
mounting of non-compatible components.
Description
The CI852, connects the FOUNDATION Fieldbus H1
(FF H1) to the AC 800M. The FF H1 has a
communication speed of 31.25 kbit/s and is intended for
remote connection of field instruments. The CI852 is
connected to the bus via a transformer, and as such
neither supplies nor consumes bus electrical power.
The number of field instruments that can be connected
via the CI852 depends on the physical limitations of the FF H1 network, together
with any software limitations (refer to the software documentation).
The FF H1 bus allows reuse of existing cabling for
4-20 mA analog signals. This means the cables often become the dominant
dimensioning factor.
An FF configurator tool can be connected directly to the FF H1 bus.
See also Related Documentation on page 17.
F
R
Rx/Tx
CI852