SMAR DFI302, Руководство пользователя

Страница: 16 / 218

DFI302 – User’s Manual
1.4
DF49/DF53 – Fieldbus Power Supply Impedances
The Fieldbus Power Supply Impedances - 2 ports (DF49) and 4 ports (DF53) - provides impedance
for the power supply and the Fieldbus network, ensuring no short-circuit between the power supply
and the communication signal on the Fieldbus.
The power supply impedance is used when you have bus-powered devices, and intrinsic safety is
not required. The high packing density reduces the footprint of the system.
Because it is DC powered and contains power-conditioning circuitry to eliminate noise and
disturbance, a central panel DC source, from a battery or solar panel in a remote operation can
power it. The Power Supply Impedance modules can also be used with existing power supplies in a
plant retrofit scenario.
An external fuse is located on the incoming line side, outputs are individually short-circuit protected,
and are not damaged even by prolonged short-circuits. Short-circuit on one port does not affect
another. The Power Supply Impedance module is therefore the ideal choice in critical operations. It
has built in diagnostics and dedicated LEDs indicating normal operation and failure for each port
that make troubleshooting much easier, especially in a system with many Fieldbus networks.
Spotting the faulty network in a panel with hundreds of modules is easy. Short-circuits and faulty
wiring are easy to be detected.
The Power Supply Impedance module has a built-in terminator for each port which may be
individually enable or disable through Dip-switches, reducing the number of component, and thereby
complexity and cost.
Open Communication Protocols
DFI302 is a complete and open solution for system integration, offering several standard protocols,
i.e., high integration to the Field Control System components.
Fieldbus
Compliant with Foundation™ Fieldbus protocol, one of the most complete standards available for
Automation Industry.
Ethernet
Foundation™ Fieldbus High Speed Ethernet (FF-HSE) and SMAR Ethernet (SE) protocols are
based on TCP/IP and provide connectivity to other systems.
EIA232
Using this additional port, Modbus protocol, connects Fieldbus data, virtually, to any other device or
system available.
High Reliability
The distributed and embedded architecture of the DFI302 warrants high reliability even if in
industrial environments: no HDDs, no fans, and no mechanical moving parts. At software execution
level, the internal processes (communication, Function Blocks, supervision, etc.) are controlled by a
prioritized multitasking operating system guaranteeing determinism and real-time operation.
Configuration
The DFI302 is completely configurable through Foundation Fieldbus Function Blocks. Allowing the
whole System (DFI302 and Field Devices) to be set up by a single software.
The Function Block language is ideal for process control, since it represents all the process
functions well known by the automation professionals.
Process Control, logic interlocks, alarms, recipes, calculations and equations. Everything can be
configured in one single environment.
Supervision
The DFI302 is developed with the most updated technology. The use of leading technologies as
OPC (OLE for Process Control) makes the DFI302 the most flexible Fieldbus interface in the
market.
The OPC server allows the DFI302 to be connected to any HMI package. The only requirement is to
have an HMI compatible with OPC. DFI302 connects with most HMI in the market, customizing our
SYSTEM302 to your needs and knowledge.