Pepperl+Fuchs R2-SP-IC Series, Руководство пользователя

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Segment Protector
Product Specifications
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2 Product Specifications
2.1 Overview and Application
The R2-SP-IC* Segment Protectors are part of a new family of bus powered, fault-tolerant
device couplers used for the connection of field devices to segments.
The Segment Protectors contain LED indicators for easy communication monitoring and
diagnostics. The LEDs indicate:
■
Bus communication activity
■
Physical layer diagnostic status
■
Power on the trunk
■
A short circuit condition or fault at any connected spur (each spur is equipped with an
individual LED)
The Segment Protectors are designed for fieldbus systems in accordance with IEC 61158-2
(FOUNDATION H1 or PROFIBUS PA) and in accordance with the FOUNDATION Fieldbus
device coupler test specification FF-846.
Communication and power distribution share the same 2-wire cable using Manchester Bus
Powered (MBP) coding.
Mounting and enclosure of R2-SP-IC* Segment Protectors
The Segment Protector is designed for DIN mounting rail installation with simple snap-on
hooks included. It can be installed in a fieldbus junction box or a control cabinet. Various
choices or tailored enclosure solutions are offered by Fuchs.
Connection layout
Spurs: Each field device is connected to 1 output or spur, and 1 or more Segment Protector(s)
are connected to the segment or trunk. R2-SP-IC* offers the choice from 4...12 spur
connections.
Trunk: The Segment Protector is connected to the trunk via a T–connector. Exchange and
modification of one Segment Protector is possible while the segment is still in operation without
affecting other parts of the same segment.
All connectors are available as screw or spring terminals. The terminals feature plugs with
retaining screws, giving fieldbus-in-process-automation the necessary durability and
availability.
Type of protection
The Segment Protector is certified for installation in Zone 2. Using Fuchs Segment
Protectors in combination with Fuchs fieldbus power supplies allows you to perform
live maintenance at the field device level in Zone 2 because the outputs are either classified
Entity Ex ic or FISCO ic.
Monitoring and diagnostic options
The R2-SP-IC* Segment Protector series are the first to offer device-level integrated physical
layer diagnostics as a standard. Most important physical layer parameters, such as
communication signal levels and signal jitter for each participating field device are monitored
and compared to limit values that are mainly derived from the IEC 61158-2 physical layer
specification or from empirical data.
A fault summary status alarm is shown on the Segment Protector through an LED indicator and
can be issued in detail, i.e., via specific field device diagnostics using an advanced diagnostic
module, positioned in the specific working environment of a process control system.