LINK Systems System 1100 Tonnage Monitor - Manual (Page 77)

CALIBRATION
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6-5
Figure 27. Portable Unit Load Cell & Unused Channel
Connection.
The relationship of which load cell is connected to which
channel is important. Load cells must be shimmed to carry
equal loads in a subsequent step of this calibration procedure
and the force generated by the machine on the load cell is
indicated by the channel of the "portable" System 1100 to
which the load cell is connected. A simple method of
establishing the relationship between load cells and System
1100 channels is to label the load cell connected to Channel
1 as Load Cell 1, etc.
The cable used to connect the load cell to a System 1100
channel termination has four conductors and a shield. The
connections should be accomplished as shown in Figure 26.
Power to the unit should be turned off before making these
connections.
If the "portable" System 1100 unit has channels to which no
load cells are to be connected, the terminals for these
channels must be terminated by connecting the SIG+ and SIG-
inputs to GND as shown in figure 26.
9) Supply power to the "portable" System 1100 tonnage monitor by
connecting terminals L1, L2, an GND on the power supply module
to a line cord an plugging into a 115VAC source. The power