LINK Systems OmniLink 5000 - Manual (Page 34)

April 17, 2000 Man ual Revisio n 1.0
4.13
Section 4.4 Error Conditions
Section 4.4.1 Setpoint Errors
When power is applied to the OmniLink 5000 or when a limit has changed and the RUN/PROG keyed
selector switch is in the RUN position, the tonnage monitor module performs a series of calculations
based on the present limit settings. If an invalid condition is found to exist either due to an incorrect
setting or an internal fault, an error message is generated in the Module Status and a Top Stop provided
to the press control. If the error is due to an incorrect setting, the condition can only be cleared
correcting the improper limit and pressing the RESET ERROR softkey. The following is a list of
setpoint errors and possible causes:
"Peak Set. Error" This indicates a limit in Peak Tonnage is invalid. It could occur if a low limit is
greater than or equal to a high limit, a high limit is greater than 125% of channel
rating, or a reverse limit is greater than or equal to -100% of channel rating. This
typically would occur only if the tonnage monitor machine rating were changed to
a lower value that made prior limits invalid. This could also indicate an internal
fault in the nonvolatile memory on the tonnage monitor board.
"Peak Deg. Error" This indicates either the start sample window angle is not between 45 and 120
degrees or the end sample window angle is not between 220 and 250 degrees.
This could indicate an internal fault in the nonvolatile memory on the tonnage
monitor board.
"Mach.Rate Error" This indicates that the machine rating is not between 000.1 and 999.9 (0001-9999
without decimal point) and should only occur if there is an internal fault.
"Dw # Set. Error" This indicates an incorrect setting in the data window specified. It would occur if
the data window On Angle is set greater than or equal to the Off Angle. It could
also occur if the machine rating were changed to a lower value making low or
high limits invalid. If all settings are correct this indicates an internal fault.
Section 4.4.2 Channel Errors
The following errors could indicate a field wiring problem, failure of a strain gauge, or an internal fault
in the tonnage monitor module.
"Channel Error" Tonnage monitor can not zero the strain gauge on any channel with the status
"Zero Error". Swap the strain gauge in question with a working channel and press
the RESET ERROR softkey. If the "Zero Error" message moves to the other
channel the problem is in the strain gauge or its external wiring. The tonnage
monitor attempts to zero for 10 seconds before generating the error. If the error
remains on the same channel the problem is on the tonnage monitor module.
"Vref Shorted" The 10.00v reference voltage for the strain gauges is below an acceptable
threshold. When this occurs the tonnage monitor will "kill" the Vref in order to
reduce power dissipation. Remove all strain gauge connections on the tonnage