ID

This value is generated automatically by the database and cannot be changed.

Order

This value indicates the order of the display within the same level of the plant tree.

Name

The name of the asset (e.g. plant, aggregate group, aggregate, etc.) can be changed here.

Comment

The Comment field is used to enter comments about an asset. The input field can be enlarged by dragging (bottom right).

Signal type

The signal type specifies the signal from which the trend value is calculated. The following signal types are available:

• Time signal

• Velocity time signal

• Acceleration time signal

• Orbit time signal

• Velocity spectrum

• Acceleration spectrum

• Orbit spectrum Displacement spectrum

• Envelope spectrum

Virtual trend type

The virtual trend type is a fixed setting for a trend and cannot subsequently be changed. This setting is used later in the limit setting to enable automatic calculation of the limit to be performed.

The following virtual trend types are available:

• Average

• Crest factor

• ENV belt

• ENV cage

• ENV inner race

• ENV outer race

• EVN rolling

• Fan blade

• FFT belt

• FFT cage

• FFT inner race

• FFT outer race

• FFT roll

• FFT rolling

• Gear damage

• Gear mesh

• Gear wear

• Imbalance

• Impeller

• ISO

• Local errors

• Maximum

• Median

• Minimum

• Misalignment

• Peak to peak

• RMS

• RMS * Peak

• Roll imbalance

• Rotor blade

• RPS

• Standard deviation

• Used range

Note
	The RMS * Peak (formerly K(t)) trend will no longer be generated for the sensor definitions IEPE Vibration Sensor (Regular) and IEPE Vibration Sensor (Extended) in migrated plants.

Unit

Select the physical unit for the trend here.

Limits

Icon	Description
↑	Limit exceeded; can be switched to value below limit by clicking on the arrow.
↓	Value below limit; can be switched to limit exceeded by clicking on the arrow.
Warning	Limit for warning
Alarm	Limit for alarm
Critical	Limit for critical state (acute alarm)
	Notification/reporting for the trend enabled. Notification/reporting for the trend can be disabled by clicking on the icon.
	Notification/reporting for the trend disabled. Te bell being disabled, the status calculation will be disabled too and the status will be set "undefined". Notification/reporting for the trend can be enabled by clicking on the icon.
	Delete limit monitoring

Creating/editing limits

By default, no limits are set for a trend. For alarms to be generated in the system, a limit must be set for the trend.

Limits not to be exceeded or fallen below can be set.

An alarm is triggered when the average or median value, evaluated over the aggregation interval, exceeds or undercuts the threshold. You set the aggregation method (moving average or moving median) and the size of the aggregation interval in the plant configuration on the Monitoring tab.

Creating a limit not to be exceeded or fallen below for a trend:

1. Open the configuration panel for the trend in the plant tree

2. On the General tab, a limit not to be exceeded can be added by clicking on the + icon under Limits.

3. Clicking on the arrow switches between not to be exceeded and fallen below.

4. The limits can be edited in the W (Warning), A (Alarm) and C (Acute alarm / Critical) fields.