Hardy HI6800 Series, Руководство пользователя

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0Quck Reference
Hardy H6800 Series Application Controllers User Guide 105
Gain in Weight: The setpoint turns on when the weight is greater than the setpoint target
minus the preact and off when the weight is less than the target minus the
deadband.
Loss in Weight: The setpoint turns on when the weight is less than the setpoint target plus
the preact and off when the weight is greater than the setpoint plus the
preact.
EXAMPLE of reverse logic relay usage. These are two settings to fill a vessel to 350 and
reset the output when near empty.
With a setpoint setting normal relay logic:
Setting NET, GIW, Target=350, Pre=0, Deadband=345.
When the output reaches 250, the output goes high and stays until LIW is below 5.
With a setpoint setting using reverse relay logic:
Settings NET, LIW, Target=5, Pre=0, Deadband=345.
The Output is set high until 350, then the output goes low and stays low until LIW is
below 5.
Status: Specifies the state of the setpoint.
A.2.1 Set Point Controller Parameters
Path: Home screen > Operation Menu > App > Set Point Controller
If your HI6800 Series Application Controller has access to the set point controller application,
refer to the table below for configurable parameters.
Parameter Description
Mode Weight source to use as the set point input.
Range: Gross, Net, ROC
Default: Gross
Target Set point target weight. A set point ON/OFF status change is based on this value along with the effect of
implementing deadband and pre-act limits
Pre-act Difference between the set point and the trip point. This value is used as a compensation value when
filling a vessel. If set to zero, there is no compensation.