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- Clock frequency 266 MHz Number of slots 10 16 2 4 6 Number of racks 2 – local rack(s) Number of distributed I/O station 63 station(s) – 1 rack(s) – 3 distributed network(s) Number of remote I/O station 31 – 2 remote rack(s) Discrete I/O number 8000 inputs, 8000 outputs – distributed – per network 31744 inputs, 31744 outputs – remote Unlimited (26 slots max) – local Analogue I/O number Unlimited (26 slots max) – local 500 inputs, 500 outputs – distributed – per network 1984 inputs,1984 outputs – remote
ELAU 140CPU65260 ｜UNITY Processor｜
- 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.
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 onesecond and 100 milliseconds. The other three control tasks can have user-selectable loop speeds. The Ovation 3.7 software release features userselectable loop speeds ranging from 10 milliseconds to 300 seconds for all five control tasks.
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.
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.
Operator Interface Processing The Ovation controller performs all limit and alarm processing based on the database configuration for each point. However, Ovation HMI’s provide the capability to suspend these functions, as necessary, based on the process state or operator actions.
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
ELAU 140CPU65260｜UNITY Processor｜
By structuring the information in this manner, the article provides a clear and organized understanding of input channels, transducer supply, and communication implementations in distributed control systems.
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