Hardy HI 6500 Series - Manual (Page 177)

Troubleshooting 167
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Weight and Voltage Tests
The Weight and Voltage tests are used to diagnose a weighing system and, if certain types
of problems are indicated, determine their source. It provides the total scale input to the
instrument such as mV, mV/V and Weight in the units selected (i.e. lbs, kg, oz, g).
Weight and Voltage Test from the Web interface
Since the IT Web page shows all the weight and voltage values at once, it is the preferred
method for troubleshooting. Click Integrated Technician to open the Diagnostics -
Integrated Technician page.
To view individual load sensor data, click Do IT Test.
These readings are snapshots and allow you to determine if the problem is in the instrument
(internal) or in a load sensor(s) (external).
The specification range for the Weight Processor is 0-25 mV, so a reading between 0-25 mV
is within the normal range. A reading outside this range would normally indicate that the
problem is external to the system (most likely improper wiring).
If all the load sensor readings are 0.00, something is wrong between the HI 6500 and the
junction or summing box box or with the summing or junction box itself. Either the cable
is disconnected, or something is causing the junction box to not transmit the readings to the
HI 6500.
If you do not get a reading for one or possibly two or more load sensors (Sensor 3 for
example reads 0.00 or the reading is either larger or smaller than it should be) and you know
that the Load Sensors are connected to the junction box, the individual load sensor cable is
disconnected from the junction box or the load sensor is malfunctioning.
Running the IT test from the front panel
The same information can be obtained from the Diagnostics menu. Select Enter to show the
menu. Then select Jbox1 to run the test. To read the rest of the results, press the down arrow.