EI-1000 & 2000: Setup, Calibration and Troubleshooting.
Page 14 of 19
Remote readout shows proper values in test mode but doesn’t track the
weight shown by on the indicator’s display:
• Check the P600 and P610 settings as shown in the “4-20 mA parameter
setup” section. P600 selects gross or remaining weight tracking and P610
sets the weight that will be 20mA.
Note: The reading displayed on the remote will be within 1% of the reading on
the EI1000 or EI2000.
Remote readout changes during testing but doesn’t track properly.
• Check that your remote is set as a passive input. If it’s sourcing current it
may be “fighting” the EI’s analog output.
• Calibrate the 4-20 mA outputs as shown above.
• Go through the output test again and check the output values with a
meter.
• If this tests ok then set the zero and full scale on your remote readout as
shown above.
Remote readout doesn’t change or no current output.
• If there is any current from the output but it is “stuck” and won’t follow the
test readout, the output is bad. The chips are socketed and can be
replaced in the field. U7 drives the CH1 output and U8 drives CH2. It may
be best to send the EI1000/2000 in for repair as there may be other failed
components.
• If there is no current output, set your meter to volts DC. Measure the
output. If you have a reading of 10 VDC or higher check the current fuse in
your meter. It may be bad.
• If your meter doesn’t show any voltage in the above step, the output is
blown. It may be The U7 or U8 chips as in the first step above.
• If the 4-20 output doesn’t change when reading weight but works in the
test mode there is a setup problem. Check the P600 and P610 settings.
Also check the tare and remaining weights if P600 is set to rE or rT.
Output current is stuck over 21 mA or under 3.4 mA but not zero.
• The output chip is blown. The chips are socketed and can be replaced in
the field. U7 drives the CH1 output and U8 drives CH2. It may be best to
send the EI1000/2000 in for repair as there may be other failed
components.
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