20130304 - Systems P3 Presentation
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Transcript of 20130304 - Systems P3 Presentation
• Pakscan was originally introduced in 1986 specifically for actuator control. Currently is undergoing its fourth evolutionary phase.
• Used by hundreds of systems controlling thousands of actuators world wide.
• Secure, mature communications.• Proven interoperability with all major host system
suppliers.• Fully pre-engineered system.
System Background
• Long loop distance - 20 km Loop length. • No repeaters – up to 240 FCUs can be connected.• Total redundancy throughout – loop, master station
modules (hot standby) and host communications• Fast command response < 0.5 second per FCU. • Acyclic data capabilities - FCU can be parameterised via
the loop.• Efficient loop communications protocol - “One time” write
commands, i.e. multiple commands to the same device are only sent once. This reduces bus traffic and increases system response.
System Features
• Loop Fault Tolerance – Loopback Feature:– Unique Loopback feature isolates faults in the event of
a cable failure, i.e. open-circuit, short-circuit or earthing fault
Break, Short or Ground fault
Normal operation20 mALoop
Fault Tolerance
• Master Station / Host Comms Redundancy: – Provided by Hot Standby switch over functionality and
multiple host communications ports.
20 mALoop
Fault Tolerance
• Modbus TCP/RTU (Ethernet / Serial comms)– Four in-built, field proven database formats:-
• Generic Modbus.• Yokogawa Format.• Honeywell EPLCG.• Honeywell SI.
• Up to 10 hosts can be connected concurrently via Ethernet
Host Interfacing
– Four host comms ports available - 2 dedicated serial ports and 2 dedicated Ethernet ports.
– Additional Ethernet service port (for commissioning).– Serial comms baud rates 2.4 kB to 115 kB.– Ethernet comms baud rates 10 / 100 MB– Switch selectable RS232 / RS485 interface.– Auto-sensing on Ethernet ports, i.e. no need for cross-
over cable or intermediate switch/hub
Host Interfacing
• P3 has a graphical colour display with icons representing the menus and settings.
HMI Display
• On some screens the icons are supplemented by text messages which are constantly updated.
• Logging of host messages, including the originating command source and time/date information as well as the P3 replies, to allow traceability of events. Accessible from HMI and web browser
Other functions
• High level security enabling access to the system to be restricted by host port and IP source address.
Other functions
• Automatic e-mail generation for alarm conditions can be configured giving the designated maintenance engineer immediate warning of master station problems.
Other functions
• Field upgradeable software– No need to replace EPROMs, software can be
modified via the Ethernet port- Channel capacity can increased via the Ethernet
port or CPU module by using a unique code
Other functions
• Synchronisation of the real time clock using a Network Time Protocol (NTP) server.
Other functions
• Multi-language selection option for HMI and web pages: (English, French, Spanish, German & Italian available now – Hungarian in progress)
Other functions
• Expertise:– Rotork owned IP– No Interoperability problems– Single vendor solution– Vast experience
• System design• Commissioning• Service
P3 Solution Provides