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Chapter 5
Table–5.105 Dual Minimum Object Input Properties.
Range /
Selection
Name
Class / Description
TmEnb
Time Enable
Class: Digital - An ON or not active (NA) enables
the Dual Minimum timeout function. An OFF at this
input disables the Dual Minimum timeout function,
causing the Output to directly follow the Input.
—
Input
Input
Class: Digital - The input signal to which the Dual
Minimum function is applied. An NA is evaluated as
OFF.
—
MinOn
Minimum On
Time
Class: Analog - The value of timeout (in minutes)
for the Minimum On period. A negative or not
active (NA) value disables the Minimum On timeout
as 0.0 minutes.
0.0 to 1,000.0
minutes
Decimal values are
valid. For example,
0.25 is evaluated as 15
seconds.
MinOff
Minimum Off
Time
Class: Analog - The value of timeout (in minutes)
for the Minimum Off period. A negative or not active
(NA) value disables the Minimum Off timeout as
0.0 minutes.
0.0 to 1,000.0
minutes
Decimal values are
valid. For example,
0.25 is evaluated as 15
seconds.
Abbrev.
Notes
See the Timing
Diagram for Input to
Output operation.
Table–5.106 Dual Minimum Object Output Properties.
Abbrev.
Class / Description
Name
Valid Values
Output
Output
Class: Digital - The Output is set to match the Input state following
completion of the appropriate Minimum On or Minimum Off timeout,
or if the TmEnb input is OFF.
TmRem
Time
Remaining
Class: Analog - The analog value representing the amount of active
Minimum On or Minimum Off time remaining (in whole minutes).
Applying the Object
Input
Output
N
A
ON
Min
ON
Time
(0.0)
(100.0)
0 to 1,000 minutes
The Dual Minimum object prevents short-cycling of a digital Output by using
minimum ON and minimum OFF timeouts applied to Input and Output
changes. Timeouts are defined by Minimum On and Minimum Off inputs to
the object, and can range from 0.0 to 1,000.0 minutes. The Time Enable
input must be at ON or not active (NA) to provide Minimum timeouts. The
timing diagram in Figure–5.56 shows Dual Minimum object operation for
both Minimum On and Minimum Off times.
ON
OFF
OFF
ON
Min
OFF
Time
Min
ON
Time
Min
OFF
Time
N
A
Min
ON
Time
Min
OFF
Time
Min
ON
Time
Min
OFF
Time
OFF
Figure–5.56 Timing Diagram for a Dual Minimum Object with Minimum Times Enabled (Time Enable = ON or NA).
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