SPECIALIST EQUIPMENT
MASTER STATION with ADVANCED FEATURES
Shelley Pike reports on a new master station that introduces ultra-fast network control for valve actuators
B
uilding on its vast experience in the valve actuation environment, Rotork has recently introduced a master station with a host of advanced new features.
T e Pakscan P4 master station features a large touchscreen display that provides an easy to use, multilingual, user interface for quick device setup, interrogation and issue resolution. NAMUR standard diagnostic icons and colours are used for easy recognition of status and alarms. Ease of navigation around the screens is enhanced by having identical screens for both the in-built web pages and the integral touchscreen, each using the same menu structure. A dedicated service Ethernet port maintains local area network (LAN) separation between confi guration or monitoring systems and the systems for controlling the process. T e P4 master station has advanced fi eld
network option capabilities including a new ultra-fast Plus Network and a Modbus network – enabling connection to third-party Modbus fi eld devices. T e modular design enables one P4 master station to supervise up to four fi eld networks – including existing Pakscan wired or wireless networks. Operating at communication speeds of up to 15 Mbit/ second using the highly noise immune SHDSL telecoms protocol, each Plus Network can connect up to 300 fi eld devices with a distance between each device of up to 5km, resulting in network lengths that can extend over hundreds of kilometres. T e ultra-fast, full-duplex network enables full modulating positional control of process valves. Priority is given to process data whilst built-in high availability seamless redundancy (HSR) ensures instant isolation of any loop fault, without loss of data, allowing continued
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operation of the plant if a fault occurs. Along with single and dual confi gurations, the P4 master station can be supplied in a hot standby confi guration where all interfaces are duplicated, providing the highest level of availability. Multiple host connectivity is provided as standard, with a fully pre- confi gured database providing easy integration with proven communications to all major DCS and PLC suppliers via the Modbus TC/ RTU protocol. T e touchscreen display also allows stand-alone operation in the event of unavailability of the host. Swift access to plentiful device data optimises the scope for predictive maintenance and asset
management, at the DCS/ PLC, the asset management
system or at the master station. Available data includes operating history, status, diagnostics and alarm logs. Pakscan P4 is designed for economical installation and minimum cost of ownership. T e single twisted-pair cable or wireless network reduces installation engineering eff ort and associated costs. T e system is fully supported with documentation, on-site or in-house training and Rotork’s global network of trained service engineers.
For more information at
www.engineerlive.com/ime
Shelley Pike is with Rotork Controls.
www.rotork.com
The Rotork Pakscan P4 digital network control system introduces a master station with a host of advanced new features
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