You may have been wondering if all devices around the plant can be diagnosed using the same single software. With a system based on EDDL it is easy. The information provided here includes many examples of basic and advanced diagnostics from simple and sophisticated (complex) devices and serves to explain how the device manufacturers make it easy to diagnose their device on any system.
Plants have hundreds or thousands of devices of different types from different manufacturers for which they must continuously monitor the health, and troubleshoot as necessary.
In the past, these devices required a technician to be sent to the field to check diagnostics with a handheld field communicator. Other times the opposite was true, when troubleshooting was done at the device in the field, somebody had to be in the control room to work from the software.
Predictive diagnostics from field devices is now checked using handheld field communicator or intelligent device management software based on EDDL, whichever suits the task at hand best.
EDDL technology makes device troubleshooting easier thanks to user guidance such as wizards as well as know-how made available from the device manufacturer's experts. The result is lower cost of maintenance, and reduced downtime. Health is flagged using easy to grasp NAMUR NE107 "status signals".
What diagnostics intelligent devices provide is not well understood and will therefore be explained in technical white papers and videos below. The importance of EDDL for diagnostics is also explained.
EDDL technology supports small portable field communicators for easy troubleshooting in the field, there is no other way to achieve a comparable result.
EDDL enables diagnostics from critical devices to be integrated in DCS operator consoles to be accessed in less than three clicks, displayed as intended by the device manufacturer. Since operators are not forced to come and go between workstations to understand what is happening in their plant, device diagnostics becomes a natural part of daily predictive maintenance work practices.
Many operation and maintenance problems around the plant can be solved by deploying intelligent devices and IDM software. However, regardless of communication protocol, plant procedures must be written so as to make full use of the device diagnostics. Furthermore, the device alarm management must be engineered; rationalizing by categorizing and prioritizing the device diagnostics alarms, such as to NAMUR NE107. The IDM software must also be kept up to date with new device types and versions as they arrive in the plant. With the hardware, software, and standard operating procedures in place, effective use of device diagnostics is possible. That is, device diagnostics must be institutionalized in daily work processes and turnaround planning to be effective.
Device Diagnostics Deployment and Adoption Guide
The work being done by the ISA108 committee in this area will also benefit incorporation of device diagnostics in daily maintenance work practices and turnaround planning.
Technical White Papers
Tutorial: Intelligent Device Diagnostics
EDDL makes working in the field easy
Incorporating device diagnostics in daily work practices: Smart Diagnostics integrated in operator consoles
EDDL in Daily Plant Work Practices (Diagnostics)
Daily maintenance and turnaround planning (Control Engineering Asia, April 2013)
Ultrasonic flowmeter diagnostics (Mar/Apr 2010)
Temperature transmitter diagnostics (Jan 2009)
Integrated operations (Aug 2009)
Coriolis flowmeter diagnostics (Oct 2009)
Integrated operations (2009)
Magnetic flowmeter diagnostics (Nov/Dec 2009)
Pump diagnostics (Apr 2008)
Pressure transmitter diagnostics (May 2008)
Temperature transmitter diagnostics (Jun 2008)
Pressure transmitter diagnostics (Oct 2008)
pH analyzer diagnostics (Sep/Oct 2008)