Hardy HI 1756-nDF - Manual (Page 37)

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Chapter 4
Parameter 4 Waversaver
Chapter one provides a detailed description of WAVERSAVER’s function and purpose.
In short, WAVERSAVER helps to mitigate the effects of vibratory forces, allowing the
HI 1756 nDF to distinguish between actual weight data and mechanical noise in the
signals the load cell sends. WAVERSAVER can be configured to ignore noise with
frequencies as low as 0.25 Hz. High values allow faster readings, while the lower values
raise the degree of filtration. 7.5 Hz provides the least vibration immunity with the fastest
response time. 0.25 Hz provides the most vibration immunity with the slowest response
time. The function is user selectable and can be turned off. Waversaver is not used when
the Weight filter is set to RAW, or Low pass filter mode.
Range: OFF, 7.50 Hz, 3.50 Hz, 1.00 Hz (Default), 0.50 Hz, 0.25 Hz
Parameter 5 Zero Track enable
Enables the auto zero tolerance function
Parameter 6 Weight filter
Selects the filter used after the analog to digital conversion stage to remove noise and
harmonics from the weight value.
Parameter 7 Refill mode
This is only available in the single relay mode of operation. Relay B is used for the refill
relay.
Enables the automatic refill mode so the unit automatically starts a refill cycle if the next
dispense cycle will lower the weight below the programmed start refill weight value. The
automatic refill cycle is stopped when the weight reaches the programmed stop refill
weight value. The STOP command will set both relays to their default (OPEN) state.
In the manual refill mode a STARTREFILL command is required to start the refill cycle,
however the refill cycle will automatically stop when the weight reaches the programmed
stop refill weight value.
In automatic or manual mode the STOP command will set both relays to their default
(OPEN) state.
Parameter 8 Weight Update Rate
This parameter sets the update rate of the analog to digital converter, and any subsequent
weight filtering calculations.
Parameter 9 Material
Defines the type of material being measured; liquids and materials that flow easily are
defined as fine material, and materials that may bind together or are lumpy in texture are
defined as coarse material.
This selection helps to configure the flow rate calculation to remove short term
disturbances in the flow rate.
Parameter 10 Flow rate filter
The type of material and the process environment may require different filtering to ensure
a stable flow rate. This parameter enables one of four possible flow rate filters to be
selected.
Parameter 11 Flow rate units
The units of time (seconds, minutes or hours) you want for the flow rate. The Flow Rate
display on the summary display will read in these units.
Range: 0=sec, 1=min, 2=hr (default Seconds)