
Troubleshooting
AutoSet 1500 User Manual
49
Ch 5
1088500
When AutoSet displays an offset error
If a strain link loosens, is damaged, or otherwise fails, its output signal may go too high
or too low. When this happens, the strain link is no longer sending accurate tonnage
information to AutoSet. AutoSet will stop the press when this condition occurs. It will
display the message
"Err"
on the setpoint display for the strain link(s) affected. The
tonnage display(s) will also flash
"HI"
or
"LO".
See Figure 5-2.
LOAD
SETPOINTS
RIGHT
LEFT
LO
48.1
Err
2.5
RESET
Figure 5-2. Displaying an offset error on input #1
Check to see if the strain link has loosened or is damaged. Also check wiring. If the strain
link looks okay, the strain link may have broken internally. Correct the problem by
remounting the strain link if it has loosened, or replacing the strain link if it is damaged
or broken. In both cases, you must re-zero the strain link. (To re-zero, refer to the
section, "Zeroing the strain links" in Chapter 3 - Calibration.) You do not have to
recalibrate AutoSet, even when replacing the strain link, unless it has been moved to a
different location. When you reset AutoSet,
ERR"
will disappear and the setpoint display
will once again show the correct setpoints and the affected tonnage display will show 0.
Resetting AutoSet
Once you have determined the problem and have corrected the fault condition, reset
AutoSet. Hold the reset button momentarily to clear the error condition, and the displays
return to normal. You can once again run the press.
RESET AUTOSET 1500
To reset after an overload, press the reset button briefly—for less than two seconds.
The setpoint display indicating the overload will stop flashing. If you hold in the reset
button too long to clear an overload (more than two seconds), the setpoints will change
to 120% of full scale tonnage. This indicates AutoSet will recalculate setpoints once
the press is started. Most of the time, you will not want to recalculate setpoints after an
overload. .