Vishay DXP10, Руководство оператора, Страница: 27 / 42

5-1
SECTION 5. Operation
5.1 GENERAL
As a stand-alone unit (no terminal, computer, or
LCp-40), either analog or digital, the DXp-1W15
typically transmits only gross weight data upon
power-up. If the DXp-10/15 is being operated
remotely from a host terminal, computer, or LCp-
40, it can perform gross, net, tare, and zero
functions.
5.2 GROSS WEIGHT WEIGHING
In the gross mode, all of the live weight of the
system is transmitted. Live weight does not
include the dead weight of a vessel or other
mechanical equipment that is zeroed out during
calibration.
5.3 ZERO OPERATION
A new zero can be acquired to compensate for
changes in the dead load of the system due to
heel build-up etc. Acquiring a new zero
reference value does not affect the slope of the
calibration. The zero function in the DXp¬10/15
can be configured for either a 2% or a 20%
ceiling (max percent of full scale capacity) if the
unit is connected to a host terminal/computer or
LCp-40.
5.4 NET WEIGHT WEIGHING
Net weight weighing is used when the operator
wants to reset to zero to compensate for the
addition of live weight, or a container, before
adding a specific amount of material. Tare is
used to establish a zero reference in net mode.
5.5 TARE OPERATION
With the DXp-10/15 in net weighing mode, the
tare operation resets the output to zero. Taring
allows the operator to achieve a new zero
reference before addition of each ingredient so
that errors do not become cumulative.
5.6 ERROR DETECTION
When the DXp is reporting weight data to a host
computer, dashes will be transmitted if an
overrange condition occurs. When connected to
an LCp-40, the node identification and dashes
will be transmitted and displayed. When used in
the monitor mode, a complete library of error
codes is available for transmission (see Table 5-
1).
5.7 CHECK CAL OPERATION
Manually depressing or remotely activating
check cal through the serial port causes the
transmitted weight data to increase by the given
percentage (see Table 34). In systems using a
host computer, this check can be made on a
routine basis to verify the accuracy of the
system.
Table 5-1. Error Codes and Flashing Display Explanations
DXp-10/15 Error Messages (As seen on an LCP-40 display or computer/terminal in monitor mode)
Error Message Description Action
E02 Signal Overrange Check for open load cell circuit or overranged
load cell (reading in excess of 35 mV at J-Box
E03 Signal Underrange
E04 Digital Overrange Return to setup and increase capacity
E10 Internal Autozero Measure
Is out of range
If external summing, check that SEN+ and
SEN- leads are secure
E200 Cannot Attain Capacity Return to setup and decrease capacity or
review hardware gain setting
E201 Cannot Attain Capacity Return to setup and increase GRAD or review
hardware gain setting.