LINK Systems OmniLink 5000 - Manual (Page 48)

April 17, 2000 Man ual Revisio n 1.0
5.3
Section 5.1.4 Channel Configuration
The OmniLink 5000 tonnage monitor module contains strain gauge connections for four (4) channels.
This parameter defines the number of channels that will be monitored by the module and should be set
only when the module is first installed in the control. If this setting is changed from the way it was
shipped from the factory, the OmniLink 5000 power must be turned OFF and back ON. The channel
configuration is examined only at power up.
The entry can be:
Setting=000 2 channel
Setting=001 4 channel
Section 5.1.4 Reset Only in Program
This parameter allows the RESET ERROR softkey to become active only with the RUN/PROG keyed
selector switch in the PROG position and can be used to restrict access to resetting tonnage alarms.
The entry can be:
Setting=000 Reset allowed without RUN/PROG key
Setting=001 Reset Only with RUN/PROG key
Section 5.1.5 Zero Integration Time
Temperature changes cause expansion or contraction of machine structural members and induce strains
which can be detected by the tonnage monitor strain gauges mounted to the machine frame. In addition,
strain gauges are manufactured with an inherent zero imbalance which can change if the gauge
experiences any long term creep. Slowly varying signals such as these are compensated by measuring
the strain gauge signals while the machine frame is not exposed to any force and integrating the offset to
zero. This is performed by the tonnage monitor module automatically when the press is at the top of the
stroke. The "zero" portion of the stroke begins at 270 degrees in the up portion of the stroke and ends
when the start of the sample window begins (see section 5.1.7). This parameter defines the rate at which
the offset is integrated to zero and is typically set at 000 (.4 second integration time).
The entry can be:
Setting=000 0.4 second integration time
Setting=001 0.8 second integration time
Setting=002 1.2 second integration time
Setting=003 1.6 second integration time
Section 5.1.6 Graph Sample Rate
The tonnage monitor module acquires samples on a timed basis and "tags" each sample with the
crankshaft angle at which it occurred in order to display the tonnage vs. crankshaft angle curve. This
parameter defines the rate at which tonnage samples are stored for use in displaying this tonnage curve.