AccuPro-5000
™
MEASUREMENT SYSTEM OPERATOR MANUAL
Issued by Department:
Engineering
Doc. Number:
5000-00-00-002
Revision:
02
Effective Date:
10/05/2021
File: 5000-00-00-002-r2_
AccuPro_5000_Operator_Manual
Copyright© 2021 Scaletron Industries, Ltd
All Rights Reserved
Page
39
of
63
b.
For a dual-channel system, first select the desired channel for which to conduct the procedure. The
number of any chosen active channel will be indicated in the upper-left corner of the display for the
remainder of this submenu.
c.
Given the importance of proper Calibration Weight entry and the fact that it requires access to
calibration weight(s), the user is first asked to confirm the menu
selection via an “RU Sure?” prompt,
for “Are You Sure?” A “Yes” response will continue; a “No” response will exit the
submenu.
d.
Select and enter the desired units for the known calibration weight(s). Only pounds (lb) or
kilograms (kg) are valid.
e.
With calibration weight(s) physically placed on the scale, enter the known Calibration Weight
value(s) in the previously-selected units for each of the four gain levels, designated on the display as
“
A
”
(maximum gain) through
“
D
”
(minimum gain). The real-time, percent of full-scale of the ADC
output will be displayed to highlight the resolvable upper limit. It is recommended that the
percentage of full-scale value does not exceed 90% in order to maintain an operating margin. If the
average calibration measurement is near saturation, a load cell may be disconnected. If the average
calibration measurement is near zero, a load cell may be shorted. Each of these scenarios will cause
the message “Check Load Cells” to be temporarily displayed before returning back
to the calibration
procedure. Inspect the load cell(s) before continuing.
f.
By definition, a Calibration Weight value must exceed the respective Dead Weight value for each
analog gain level. If this condition is not met, an “Invalid Entry” message is momen
tarily displayed
(Not shown in Control-Flow diagram) prior to providing the user an opportunity to increase the
calibration weight.
8.5
Capacity Weight
Select this menu option by pressing the Enter Key while the display appears as shown in Figure 20.
Figure 20: CAPACITY WEIGHT Menu Option
There are three distinct gross capacity weight values that need to be understood, referred herein as
Physical Capacity, Hardware Capacity, and Working Capacity. A Physical Capacity Weight represents
the maximum gross weight that the Scale-Base and combined load cells can withstand without suffering
permanent mechanical damage via bending of metal. Conversely, the gross Hardware Capacity is the
maximum weight that the system’s
hardware, or electronics, can resolve without exceeding the upper
limit of its working range. Note that Hardware Capacity Weight can be less than or greater than the
Physical Capacity Weight. Finally, the gross Working Capacity Weight represents the maximum
working gross weight that the system is designed to support, including any Tare Weight component, per
customer requirements and factory-limited specification. This submenu is for entering a gross Working
Capacity Weight, hereafter referred to as simply Capacity Weight. Its value MUST ALWAYS be less than
CAPACITY Wt