FaultNumeric

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Detects a numeric fault.  The fault conditions are detected when the input exceeds the limits of the HiLimit or LowLimit.

HiFault is True when the input is greater than the value entered in the HiLimit slot. LowFault is True when the input is lower than the value entered in the LowLimit slot.

Inputs



 

 

Slots

Type

Default

Description

 

In

Numeric

Null

The input to monitor, the default value is Null.

 

HiLimit

Numeric

100.0

The high limit to compare against the input. If the input is greater than the HiLimit plus the deadband for a period of time greater than the delay, then HiFault will be True.

 

LowLimit

Numeric

0.0

The low limit to compare against the input. If the input is less than the LowLimit minus the deadband for a period of time greater than the delay, then LowFault will be True

 

Enabled

Digital

True

Determines if the block is enabled.

 

Outputs


 

Slots

Type

Description

 

HiFault

Digital

True when the input is greater than the HiLimit plus the deadband for a time greater than the delay.

 

LowFault

Digital

True when the input is less than the LowLimit minus the deadband for a time greater than the delay.

 

Properties


Slots

Description


Delay

The period of time the fault condition must persist before the output becomes True.


Deadband

Defines a range of input values in which the output will not change state. For the HiLimit, the deadband range is from the HiLimit to (HiLimit + deadband). For the LowLimit the deadband range is from the LowLimit to (LowLimit – deadband).

 

Delay

The input must be in Fault condition for this period of time (in seconds) before the output becomes True.