Kistler-Morse KM SVS2000 - Manual (Page 80)

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97-1129-01 Rev. D
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5. Gross Units
Over Calculated gross weight (or selected
engineering unit) exceeds seven active digits
(9999999). yes note: Write down all existing system parameters before
you change Disp Format or Disp Units. If you change
Disp Format or Disp Units, you must adjust system
parameters to correspond to new Disp Format or Disp
Units.
1. Check Disp Format [11]. ensure format is consistent
with maximum expected value. For example, xxxx.
xx format yields maximum value of 99999.99, while
xxxxxx00 format yields maximum value of 999999900.
2. Check Disp Units [13]. ensure units are consistent
with maximum expected value. For example, a number
in tons represents 2000 times more weight than the
same number in pounds; a number in barrels represents
42 times more volume than the same number in gallons.
3. Check calibration. Recalibrate if required.
6. net Units Over Calculated net weight (or selected
engineering unit) exceeds seven active digits
(9999999). yes note: Write down all existing system parameters before
you change Disp Format or Disp Units. If you change
Disp Format or Disp Units, you must adjust system
parameters to correspond to new Disp Format or Disp
Units.
1. Check Disp Format [11]. ensure format is consistent
with maximum expected value. For example, xxxx.
xx format yields maximum value of 99999.99, while
xxxxxx00 format yields maximum value of 999999900.
2. Check Disp Units [13]. ensure units are consistent
with maximum expected value. For example, a number
in tons represents 2000 times more weight than the
same number in pounds; a number in barrels represents
42 times more volume than the same number in
gallons.
3. Check calibration. Recalibrate if required.
7. Grs Under
Range Calculated gross weight (or selected
engineering unit) is negative and exceeds
four active digits (9999). yes 1. Check calibration. Recalibrate if required.
2. One or more sensors may be damaged. Follow
troubleshooting procedures detailed in sensor manual
to locate damaged sensor(s). Replace if required.
8. ADC
Overrange + Sensor input is causing counts to go above
2,097,151. yes 1. Check wiring of sensors to junction box and junction
box to SVS2000. Correct loose, damaged (shorted), or
incorrect wiring.
2. One or more sensors may be damaged. Follow
troubleshooting procedures detailed in sensor manual
to locate damaged sensor(s). Replace if required.
3. Check power supply by measuring across +Ex and
-ex on Power Supply PCB.
• If SvS2000 is wired to km half-bridge sensors with no
IS Barriers, verify voltage is approximately 12 v.
• If SvS2000 is wired to foil-gage sensors, verify voltage
meets sensor manufacturer’s requirements. If voltage is
incorrect, replace Power Supply PCB.
note: If system includes IS Barriers, check power
supply by measuring across +Sense and -Sense.
4. Measure voltage across +Sig and –Sig terminals on
Power Supply PCB. This reading is actual signal coming
back from sensor. For K-M sensors, reading should be
less than 1 v:
• If reading is less than 1 v, verify that Sensor gain
[63] is set as described in Chapter 10, Sensor menu.
If Sensor Gain is set correctly, A/D converter may be
damaged. Contact KM.
• If reading is greater than 1 v, recheck wiring, sensors,
and power supply as described in Steps 1 through 3.