LINK Systems System 1100 Tonnage Monitor - Manual (Page 4)

CONTENTS
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2.8.4 Threshold . . . . . . . . . . . . . . 2-19
2.8.5 Cam Zero . . . . . . . . . . . . . . . 2-19
2.8.6 Data Window
. . . . . . . . . . . . . 2-19
2.8.7 Auto Setup . . . . . . . . . . . . . . 2-20
2.8.8 Machine Speed
. . . . . . . . . . . . 2-20
2.8.9 Top-Stop Timer . . . . . . . . . . . . 2-21
2.8.10 Decimal Point . . . . . . . . . . . . 2-21
2.8.11 Alarm Clear Access
. . . . . . . . . 2-22
2.8.12 Memory Clear . . . . . . . . . . . . 2-22
2.8.13 Static-Cal . . . . . . . . . . . . . 2-23
3. Theory of Operation . . . . . . . . . . . . . . . . 3-1
3.1 General . . . . . . . . . . . . . . . . . . . 3-1
3.2 Measurement of Load . . . . . . . . . . . . . 3-1
3.3 Summing Multiple Channels to Obtain Total Load 3-3
3.4 Limits of Measurement Accuracy
. . . . . . . 3-5
3.4.1 Machine Vibration . . . . . . . . . . 3-5
3.4.2 Structural Ringing . . . . . . . . . . 3-5
3.4.3 Structural Nonlinearity
and Eccentric Loading . . . . . . . . . 3-6
3.5 Automatic Zeroing . . . . . . . . . . . . . . 3-7
3.5.1 Rate of Change Automatic Zeroing . . . 3-7
3.5.2 Automatic Zeroing by Position . . . . 3-9
3.6 Data Windows . . . . . . . . . . . . . . . . 3-9
4. Applications Information . . . . . . . . . . . . . 4-1
4.1 Selection of Zeroing Method . . . . . . . . . 4-1
4.2 Strain Link Mounting Locations . . . . . . . 4-1
4.2.1 "C" Frame Machines . . . . . . . . . . 4-1
4.2.2 Straight Side Machines . . . . . . . . 4-2
4.2.3 Overdrive Double Action Machines . . . 4-6
4.2.4 Underdrive Machines . . . . . . . . . 4-7
4.2.5 High Speed Machines . . . . . . . . . 4-7
4.2.6 Other Applications . . . . . . . . . . 4-7
5. Installation . . . . . . . . . . . . . . . . . . . 5-1
5.1 Mounting the Enclosure . . . . . . . . . . . 5-1
5.2 Mounting the Strain Links . . . . . . . . . . 5-4
5.2.1 Direct Machine Mounting . . . . . . . 5-4
5.2.2 Intermediate Weld Pad Mounting . . . . 5-5
5.2.3 Intermediate Adhesive Pad Mounting . . 5-6
5.3 Conduit . . . . . . . . . . . . . . . . . . . 5-7
5.4 Electrical Connections . . . . . . . . . . . 5-7
5.4.1 Connecting the Strain Links . . . . . 5-7
5.4.2 Connecting the OIT to the Logic Unit . 5-8