Ovation Controller Model OCR1100 Emerson

Контроллер Ovation OCR1100 Emerson

Features

 Secure, reliable and mission-critical control capability providing “bumpless” automatic failover between redundant controllers. 

  Fast processor for increased productivity 

  One-step data acquisition functionality through the definition of the I/O database 

  Small footprint with low power requirements and fanless operation 

  Interfaces to Ovation and WDPF I/O, both local and remote  Integral interface to digital busses through Ovation I/O modules 

  Integrated virtual I/O capability for third-party OEM systems over Ethernet protocols. 

  Non-volatile storage of application software, point database, configuration information, and operating tuning constants 

  Integrated sequence of events capability with 1 millisecond resolution 

  Meets IEC 61131-3 standards 

  Achilles Level 1 certified

Introduction

Emerson’s Ovation™ distributed control system is renowned for delivering precision control with outstanding performance. That precision begins with the Ovation controller secure, mission-critical operations such as those of power generation, water and wastewater plants.   The OCR1100 model of the Ovation controller series executes simple or complex modulating and sequential control strategies, performs data acquisition functions and interfaces to the Ovation network and various I/O sub-systems. It has the capability to originate up to 32,000 points.

The OvaOCR1100 functionality is defined by control sheets created from an extensive library of standard and advanced Ovation algorithms specifically designed for the power, water and wastewater industries. Control sheets provide the basis for executing, documenting and o meet the demanding requirements of a wide range of process applications. Functions performed by the controller include: 

  Continuous (PID) control 

  Boolean logic  Advanced control 

  Special logic and timing functions 

  Data acquisition 

  Sequence of events processing 

  Cold junction compensation

 Process point sensor/limit checking 

  Process point alarm processing 

  Process point conversion to engineering units 

  Process point database storage 

  Local and remote I/O interface 

  Process point tagout

Standard Functions 

 Control Execution

The Ovation OCR1100 controller, with an Intel®-based processor, is capable of simultaneously executing as many as five process control tasks at loop speeds ranging from 10 milliseconds to 300 seconds. Each control task is comprised of the I/O process point input scan, control scheme execution and an output scan.   For Ovation 3.6 software release and below, two of the control tasks use predefined loops speeds of one second and 100 milliseconds. The other three control tasks can have user-selectable loop speeds.   The Ovation 3.7 software release features user selectable loop speeds ranging from 10 milliseconds to 300 seconds for all five control tasks.  

Control Scheme

OCR1100 functionality is defined by control sheets created from an extensive library of standard and advanced Ovation algorithms specifically designed for the power, water and wastewater industries. Control sheets provide the basis for executing, documenting and automatically creating control tuning diagrams used during commissioning and when adjusting control schemes. On average, the OCC100 controller can execute more than 1,000 control sheets.

Sequence-of-Events

Integral sequence-of-events processing capability is provided using Ovation I/O and standard controller software. With a resolution of one millisecond, the sequence-of-events subsystem records the sequence in which a set of user-defined digital input indications change state, providing a valuable troubleshooting and diagnostic tool for high-speed electrical systems.

In addition to the higher resolution time tags, sequence-of-events points may be used in control schemes like any other I/O point, including limit checking and alarming.

Alarm Processing

The OCR1100 processes limits and alarms based on each process point’s database definition. These functions are performed regardless of whether the point is scanned for input to a control loop or for data acquisition separate from control functions.   The alarm status of each point in the controller is updated with each scan. The status may indicate whether a point value has:  Exceeded the range of the sensor  Exceeded the user-defined limits  Changed state  Passed an incremental limit Alarm reporting can be delayed on a per-point basis by a user-specified period.   When coupled with a workstation, the Ovation OCR1100 controller has the capability to report six independent alarm thresholds defined as:  Four high limits  User-defined high limit  Highest plus incremental limits  Four low limits  User-defined low limit  Lowest plus incremental limits The workstation can sort and display alarms based on a user-selected alarm significance level.