LINK Systems 5100-8 Tonnage & Analog Signal Monitor - Manual (Page 28)

Doc #: L-802-1110 Page 26 Rev. 02
“Setpoint Error” The module has detected one or more invalid setpoints (high limit less than
low limit, limits higher than machine rating, etc). One likely cause for this
error is a change to the machine rating or a change in the “Max Forward
Setpoint Level”. Changing either of these settings can result in limits that
exceed the new maximum allowed by the settings. The tonnage monitor
module will clamp the limits to allowable levels and generate the “Setpoint
Error” message to inform the user of the change. When this error is generated
all setpoints should be checked and adjusted as needed.
“Window Angle
Error” The module has detected one or more invalid window angle settings. This can
occur when the “Sample Start Angle” is less than 45 degrees, the “Sample
End Angle” is greater than 315 degrees, the “Auto-Zero Start Angle” is
greater than 350 degrees, or the “Auto-Zero End Angle” is less than 10
degrees. This will also be generated if the Sample Window and the Auto-Zero
Window overlap or if a data window end angle is less than the data window
start angle. The tonnage monitor module will adjust limits to the minimum
extent necessary to make them valid and generate this error to inform the user
of the change. All window angles should be checked and verified when this
occurs.
3.2.6.2 Channel Errors
In addition to tonnage alarm conditions (see section 3.2.5), the following errors can be indicated in the
channel status for an individual channel:
"Zero Error"
The tonnage monitor can not zero the strain gage on the channel. Swap the
strain gage in question with a working channel and press the RESET FAULT
softkey. If the "Zero Error" message moves to the other channel the problem
is in the strain gage or its external wiring. It may take several seconds to
generate the error. If the error remains on the same channel the problem is on
the tonnage monitor module.
3.2.6.3 Resetting Errors
If an alarm or error condition is detected, a stop signal is issued. To reset the error, press the RESET
FAULT softkey in the Main Tonnage Monitor screen. Note that depending on configuration, this key
may only appear only with the RUN/PROG keyed selector switch in the PROG position. In addition,
if access codes have been enabled (see section 11 on page 78 for details), the operator will also require
an access code to reset the tonnage monitor.