Focus on valves

Wireless valve monitoringNC 2016 product fig1

  

RI Wireless transmits a real-time position indication to the control room and enables predictive maintenance for actuated valves. Designed for new and existing plants in the process industries and utilities, the products are certified as Zone 1 intrinsically safe for use in hazardous areas.

By introducing comprehensive plant monitoring, the system should enhance operational efficiencies and eliminate unnecessary shutdowns. Monitoring valve opening and closing profiles and detecting variations from reference profiles facilitates predictive maintenance.

The system consists of a small, battery-powered valve monitoring device (VMD) that is installed on existing or new valve actuators using a NAMUR interface, or on manual valves with an ISO 5211 interface. The VMD collects dynamics-of-state data from the actuator or valve and transmits it as a 64-point packet, providing the information required for preventative maintenance.

A network of valve device routers (VDR) transfers the monitoring data from the VMDs on a wireless mesh network to the tunneling VDR, which is the “last hop” VDR that transfers the data to the RI Wireless gateway, an industrial computer that manages the RI Wireless system. Several tunneling VDRs can be connected to the RI Wireless gateway via TCP/IP networks.

The final element in the structure is the RI Wireless Management System, a software management tool that provides operational and maintenance data in common industrial standard connections to a human-machine interface, distributed control system (DCS), or programmable logic controller.

Rotork, www.rotork.com

Solenoid valve integrationNC 2016 product fig2

The ASCO Numatics 580 Characterization Module (CHARM) node facilitates solenoid valve integration into the company’s DeltaV S-series DCS with electronic marshalling technology. The node enables full integration of the 500 series pneumatic valves and manifolds into the DeltaV DCS network.

 

It also uses the native capability of DeltaV to diagnose pneumatic valves and brings the CHARM redundant communications and power connections to pneumatic valve manifolds. The node eliminates the need for additional dedicated networks like Profibus DP for pilot valves and simplifies system I/O mapping. The node uses a single network connection from the DeltaV DCS through the CHARM baseplate and connects to the 580 CHARM node and manifold, eliminating the need to use individual DO CHARM to drive each valve coil on the pilot manifold.

Emerson, www.emerson.com

Angle sensorsNC 2016 product fig3

The company has two extensions of its inductive angle sensors for rotary actuators. The RI360-DSU angle sensors are suited for harsh environments: one has a stainless-steel “minifast” connector and the other, using a terminal chamber, provides ATEX and IECEx approvals.

Using the inductive resonant circuit measuring principle and with an open-face sensor for rotary valve sensing, the sensors produce analog or discrete outputs and have flexible mounting options. The inductive angle sensors can monitor quarter-turn valves and three-way valves, while also detecting the valve position during cleaning cycles. The sensors can also detect the wear of seals.

With a protection rating of IP67 and a rugged, compact housing design, the RI360-DSU sensors provide wear-free sensing in harsh applications. The sensors work in temperatures ranging from –25° to +75°C (Exi version limited to +70°C), making them suitable for a wide range of applications, including valve automation, steering position feedback, and dancer arm control.

Turck, www.turck.us

Universal interface moduleNC 2016 product fig4

The CTEU-EP universal interface module lowers the cost of EtherNet/IP connectivity and makes it plug and play for a range of the company’s valve terminals. The CTEU-EP is ODVA conformant and a Rockwell Encompass–referenced product. Original equipment manufacturers can configure up to 96 valves on multiple valve terminals with a single EtherNet/IP node.

Basic diagnostics reduce downtime through faster identification of such fault conditions as undervoltage and short circuits. The CTEU-EP connects to all I-Port–enabled valve terminals, including VTUG, VTUB, MPA-L, VTOC, and CPV.

In harsh environment applications, it can interface EtherNet/IP to the MPA-C IP69K-rated valve terminal. CTEU-EP is also compatible with other I-Port–enabled products, such as the CTSL input module, SDAT cylinder position transmitter, OVEM vacuum generator, VPPM pressure regulator, CMMO-LK stepper motor controller, and a number of pressure sensors. I-Port relies on standard single-pin M12 male and female connectors.

The CTEU family of universal interface modules is compatible with other leading fieldbuses, including DeviceNet, Modbus TCP, EtherCAT, Profibus DP, Profinet, CANopen, and CC-Link. In addition, CTEU modules can be connected via CANopen to CPX-CEC front end control.

Festo, www.festo.com