1101600
AutoSetPAC User Manual
124
Chapter 6 Troubleshooting
Only one faulted channel is identified in an AutoSetPAC message, but setpoints for other strain link
inputs may have been exceeded as well and other types of faults may have occurred. You can check
to see if other channels are at fault by accessing the Adjust Setpoints screen (see
, page
111) and comparing the setpoint and tonnage value for each strain link.
For high and low tonnage faults, you can also refer to the Tonnage Bargraph View screen (see
Displaying Tonnage in Bargraph View
, page 110), which shows each channel with a high or low
tonnage fault in red and provides a graphical representation of how much the tonnage diverges from
the high or low setpoint.
The Tonnage Plan View screen (see
Displaying Tonnage in Plan View
, page 109) shows each channel
with a high tonnage fault in red.
Before you reset AutoSetPAC, make sure that you have completely corrected the problem. Determine
whether the fault was simply a nuisance stop or was caused by an actual press or die malfunction. A
nuisance stop occurs when setpoints are so tight that small, normal variations in tonnage cause
AutoSetPAC to shut down the press.
If the fault was caused by a nuisance stop, you need to adjust the offending setpoint so that it is higher
(or, in the case of a low setpoint, lower) than normal tonnage fluctuations. You may also need to
lengthen the sample period to provide AutoSetPAC with a broader range of values from which to
select a reference tonnage for calculating setpoints.
CAUTION
If the press stopped due to a real fault, do not continue until you have completely corrected the
problem. Failure to do so may result in damage to the press and tooling.
Failure to comply with these instructions could result in property damage.
If the fault was caused by a press or die malfunction, you need to find and correct the problem
immediately. Do not clear the fault until you have corrected the problem. Common causes of tonnage
faults are shown in Table 6-1:
Table 6-1. Common Causes of Tonnage Faults
Stuck part
Variation in shut height
Significant change in material thickness or
hardness
Slug stacking
Load imbalance
Misfeed
Broken punch
End of stock
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