Rockwell Automation T3834 ICS Regent Continuous Control Package for Winterpret User Manual

Page 11

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Continuous Control Package for W

INTERPRET

(T3834)


P D - 6 0 4 4 M a r c h , 0 6

11

Direct/Reverse (Control Direction)

Determines the control output gain. In Direct mode, the
control output increases as the gain increases (direct acting
or positive gain). In Reverse mode, the control output
decreases as the gain increases (reverse acting or negative
gain). The default value is Direct.

Sample Time

The sample time is the time between loop calculations to
determine how often the controller is solved. May be in the
range 0.01 to 650 seconds. The default value is 1.00 second.

Gain

The gain constant value, including the process gain and
the controller gain. May be in the range 0.01 to 50
(unitless). The default value is 1.00. The desired ratio of
change in corrective action for a given change in the error.

Reset Time

The reset time is the time required to eliminate the effects
of offset introduced by the proportional term. May be in
the range 0.0 to 3600 seconds. The default value is 0.0
seconds.

Rate Time

The rate time is the time required for the derivative action
to advance the effects of the proportional action. A value of
0 disables the computation of the derivative component.
May be in the range 0.0 to 250 seconds. The default value
is 0.0 seconds.

Setpoint

The setpoint at which the process value is maintained.
May be in the range Setpoint Low < x < Setpoint High.
There is no default value.

Setpoint Low Limit

The setpoint low limit is the smallest value that the
setpoint can become from the actions of bumpless transfer
or cascade. May be in the range Scale Low < x < Setpoint
High. There is no default value.

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