Rice Lake 118788, Руководство пользователя

Страница: 55 / 112

Configuration 49
PREACT Off
On
Learn Allows the digital output associated with a setpoint to shut off before the setpoint is satisfied to
allow for material in suspension.
The ON value adjusts the setpoint trip value up or down (depending on the TRIP parameter
setting) from the setpoint value using a fixed value specified on the PREVAL parameter.
The LEARN value can be used to automatically adjust the preact value after each batch.
LEARN compares the actual value at standstill to the target setpoint value, and then adjusts
the preact PREVAL by the PREADJ value times the difference after each batch.
PREVAL
PREADJ 0.500000
0-9999999
Preact adjustment factor. For setpoints with PREACT set to LEARN, specifies a decimal
representation of the percentage of error correction applied (0.05 = 50%, 1.0 - 100%) each
time a PREACT adjustment is made.
PRESTAB 0
0-65535
Preact stabilization time-out. For setpoints with PREACT set to LEARN, specifies the time, in
0.1-second intervals, to wait for standstill before adjusting the PREACT value. Setting this
parameter to a value greater than zero disables the learn process if standstill is not achieved in
the specified interval.
PCOUNT 1
0-65535
Preact learn interval. For setpoints with PREACT set to LEARN, specifies the number of
batches after which the preact value is recalculated. The default value, 1, recalculates the
preact value after every batch cycle.
RELNUM 1
2
3
4
5
6 For the percent relative setpoint, specifies the number of the relative setpoint. The target
weight for the %REL setpoint is determined as the percentage (specified on the VALUE
parameter of the %REL setpoint) of the target value of the relative setpoint.
BATCH Off
On Specifies whether the setpoint is used as a batch (ON) or continuous (OFF) setpoint.
PSHACCM Off
On
ONquiet Specifiy ON to update the accumulator and perform a print operation when the setpoint is
satisfied. Specify ONQUIET to update the accumulator without printing.
PSHPRNT Off
On
Waitss Specify ON to perform a print operation when the setpoint is satisfied; specify WAITSS to wait
for standstill after setpoint is satisfied before printing.
PSHTARE Off
On Specify ON to perform an acquire tare operation when the setpoint is satisfied. Note that
PSHTARE acquires the tare regardless of the value specified for the REGULAT parameter on
the FEATUR menu.
ACCESS On
Hide
Off Specifies the access allowed to setpoint parameters shown by pressing the Setpoint softkey in
normal mode.
ON: Values can be displayed and changed.
HIDE: Values cannot be displayed or changed.
OFF: Values can be displayed but not changed.
DIGOUT None
1-4 Lists all digital output bits available. This parameter is used to specify the digital output bit
associated with this setpoint. Use the DIGI/O menu to assign bit function to OUTPUT. For
continuous setpoints, the digital output becomes active (low) when the condition is met; for
batch setpoints, the digital output is active
until the setpoint condition is met.
SENSE Normal
Invert Specifies whether the value of the digital output associated with this setpoint is inverted when
the setpoint is satisified.
Parameters Choices Description
Table 3-17. Scale Setpoint Menu Parameters