Related Products:

EGMA-004, EGMA-005, EGMA-006, EGMA-007, EGMA-008, EGMA-013, EGMA-015, EGMA-016, EGMA-019

Related Documents:

EZDP-2020 and EZDP-2038

Type:

Technical information

Keywords/Labels:

Premium Monitoring System Application, Controls and Indicators

Summary:

Overview guide to Premium Monitoring System bottom of screen section with description of uses and functions.

Controls and Indicators

The area at the bottom of the screen contains controls and alert indicators. These controls and indicators are displayed regardless of which page is displayed.

For EZDP-2038:

controls-indicators.PNG

For EZDP-2020:

controls-indicators.PNG
  • GO TO ROPE VIEW / GO TO SHAFT VIEW Button: In Shaft view, the button is labeled GO TO ROPE VIEW, and clicking it displays the last-displayed tab in Rope view. In Rope view, the button is labeled GO TO SHAFT VIEW, and clicking it displays the last-displayed tab in shaft view.

  • PAUSE MONITORING Button: Stops monitoring and reporting activities, including LIVE values. Period or limit calculations, time-based averages, and alert or warning triggering are paused. Pause monitoring is an option available to the plant for any situation when it may be preferable to have the generator running without monitoring.

  • DOWNLOAD WVFM'S: Displays the Premium Monitoring System File Manager, which you can use to manage your file storage and download data.

  • ROPE Fault Alarm: Turns red to indicate a rope fault. Also flashes the external LED, if installed.  The alarm continues until the fault is cleared.

  • Storage Low Alarm: Turns red when the storage space on the hard drive reaches approximately 95% of its capacity.  Also flashes the external LED, if installed. The alarm continues until files are deleted and the status clears. If the Premium Monitoring System reaches maximum storage capacity, the application will return an error message and monitoring will not continue. The time it takes to reach storage capacity depends upon where plant personnel set their thresholds, how frequently they are cleared, and overall unit operation. Check the Premium Monitoring System File Manager as part of your routine visual inspection process. Clear the storage as needed to maintain proper monitoring system operations.

  • Ground Lost Warning: Turns red if the Premium Monitoring System detects that ground current falls below the minimum threshold in conjunction with shaft voltage stepping up at a rate that is greater than the system's set ratio limit. Also flashes the external LED, if installed. The alarm continues until the situation is cleared. If this warning occurs, a qualified plant electrician should immediately assess the grounding integrity. The electrician should also inspect the grounding rope. Confirm continuity between the grounding rope and case ground and its connection to the generator shaft. In the event of a false alarm, consult with Cutsforth Engineering to assess potential custom threshold or high limit ratios to be considered for your generator.

  • Steps Up Counters: Increment when voltage and/or current steps up:

    • Shaft V & Gnd A Steps Up: Triggers when both ground current and shaft voltage step up.

    • Shaft V Steps Up: Triggers when shaft voltage steps up.

    • For EZDP-2038:

      Exciter V Steps Up: Triggers when exciter voltage steps up.

    To set counters back to zero, press RESET. Resetting the counter allows four more snapshots to be recorded—it does not delete previously captured snapshots.

    The system automatically averages the ground current or shaft voltage zero-to-peak values for two separate periods:

    • PERIOD1 is approximately 20 seconds.

    • PERIOD2 is approximately 200 seconds.

    If PERIOD1 / PERIOD2 > a RATIO limit of 1.5, it is considered a step-up condition. Up to four snapshots will be recorded, assuming the RATIO stays above the threshold. No alarm is triggered on a step-up condition. Upon reset, the PERIOD1/ PERIOD2 averages begin recalculating from that point forward. No more snapshots are taken until the longer PERIOD2 has elapsed.

  • Unit Status: Displays GEN ON and GEN OFF status:

    • GEN ON: When both ground current and shaft voltage zero-to-peak values are maintained above their minimum threshold for at least 30 seconds, Unit Status is GEN ON and monitoring is operational.

    • GEN OFF: When both the ground current and shaft voltage drop below minimum threshold, the Unit Status is GEN OFF.

    The GEN ON and GEN OFF thresholds are set at the factory or during installation. Sometimes, with new installations, some adjustment of these values is required for proper operation. If your monitoring system indicates an incorrect GEN ON or GEN OFF status, contact Cutsforth Engineering to help determine what adjustments might be best to take. Cutsforth will require a copy of the waveform snapshots recorded by the system while operating to help make a proper determination of any changes required. When GEN OFF is sensed, live values still update, but any period or limit calculations, time-based averages, and the ability to trigger fault conditions pause until the ground current and shaft voltage zero-to-peak values once again rise above their minimum thresholds and maintain those levels for at least 30 seconds.

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