Control Network

Pakscan Classic Field Network

The Pakscan™ Classic redundant loop network has been the network of choice for actuator control for over 30 years.

• Up to 20 km loop lengths
• 240 field devices are possible per loop
• Redundant loop ensures plant operability in the event of cable break or earth fault.
• Current loop technology provides high noise immunity.
• Efficient low cost installation as only one twisted pair instrumentation cable is required for the network loop with no requirements for external repeaters or network termination.
• Utilizing 'Report by Exception', provides efficient data reporting at low baud rates required for long distance current loop communications.
• Open to third party devices. Actuators can be used as a hub or a dedicated General Purpose Field Control Unit (GPFCU) can also be used as digital and analogue I/O, providing the interfaces to connect other actuator types and additional plant control devices into the network.

Rotork Master Station

The Rotork Master Station provides the high integrity link from the Distributed Control System (DCS) to the devices in the field over Pakscan™ Classic or Modbus® field networks.

It comes complete with a large touch screen interface to allow operators and engineers to see exactly what is happening to the system and the field devices at any time.

A hot standby Rotork Master Station allows for continued availability of the system in the event of a component failure. Host ports allow connection to multiple host systems at the same time with redundant communication links where necessary. In the event of a fault occurring, the changeover to the standby is seamless without loss of data and control.

Rotork Master Station Features:

• Single, dual and hot standby Rotork Master Station options
• Fully hot standby Rotork Master Station where all interfaces are replicated i.e. CPU, power supplies, display, network interfaces and control interfaces
• Multiple host port connectivity, Modbus® TCP (Ethernet) as standard with optional Modbus® RTU (serial)
• No specialist software required to configure the system
• Can be configured fully via the touch screen interface or web interface
• Large touch screen interface and web pages share the same intuitive menu structure focused on providing quick device set up, interrogation and issue resolution
• Dedicated service port to maintain separation between configuration, maintenance or monitoring systems and systems for controlling the process
• Choice of mounting options, 19” rack or panel mount
• Industry standard NAMUR NE107 diagnostics indication
• Modular design enables multiple field networks to operate from one Rotork Master Station
• Two field networks - Pakscan™ Classic and Modbus®
• Logging of host messages, field unit commands and status changes
• Network time synchronization (NTP) capability
• Multiple language support
• Compatible with existing and legacy Rotork actuators
• Standardized Modbus® host database for all field network options
• Backwards compatible for existing Pakscan™ IIE and P3 Master Station systems
• Standalone operation possible if the DCS or host system is unavailable
• Power supply module 100 - 240 VAC (±10%), 50 / 60 Hz
• Up to 240 channel CPU options

See Rotork Master Station Catalogue (pub059-048)

For more information or quotations on the above range of products, please contact the following EPC representative.

Contact Person: Mark Trevethan