Hardy HI 4050, User Manual

Page: 162 / 192

154 Chapter 8
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M - (*******) or (- - - - - - -) ERROR
M
1) Verify the signal wires are properly connected
(a) Verify load cell cable color code
(1) Load Cell Certificate
(2) Installation Manual
(3) Cable marking strips
(b) Broken signal wires act as antenna for EMI/RFI
(c) Load cell cable shields must be grounded only at the
Weight controller to dampen EMI/RFI signals
2) The load cell output signal voltage has exceeded 15mVDC or
is negative
(a) Use IT Test to verify mV levels
(1) Verify total millivolt signal level
(2) Verify individual load cell millivolt signals
a) An individual load cell may be over-ranged and
and exhibit high millivolt readings
b) Possible physical damage to the load cell
c) Internal strain gauge bond broken
d) Moisture in the load cell cable or body
3) Weight in the hopper exceeds the configured Scale
Capacity setting
(a) Under configuration verify the Scale Capacity setting
(b)
(c) This is used only as a warning and does not effect
calibration
(d) Optional communication signals are unaffected by this
indication
4) Weight in the hopper exceeds the load cell capacity
(a) Mechanical forces or product acting on the scale
overloads the load cells
(b) Use IT TEST to verify Millivolt levels
5) Review Mechanical and Electrical Flow charts for additional
tips. B1
9 divisions with division size based on the certification
mode selected
MODE: 1 DIV Scale Capacity/3,000
6) Sense connection missing
NTEP MODE: 1 DIV Scale Capacity/10,000
Canadian
- - - - - - - or * * * * * *
The load sensor output signal has exceeded the
millivolt limits set in Configuration and/or the internal
factory setting.
ERROR?
Contact
Hardy Instruments
Customer Service
800-321-5831
PROCEED WITH
WEIGHING
PROCESS
Yes No