LINK Systems System 1100 Tonnage Monitor - Manual (Page 79)

CALIBRATION
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6-7
1100 is used as a "portable" calibration unit.
Follow the procedures in section 2.4.1 of this manual to set
the low setpoints for each channel of the "portable" System
1100 to zero (0).
13) Set the calibration number for each channel of the "portable"
System 1100 unit to the specified value labelled on the load
cell connected as an input to the respective channel. To set
the calibration number of a channel, select the CAL-CHECK
option in the Config menu. Press the YES key when prompted
with "ESTOP WILL ACTIVE! BEGIN CAL-CHECK (Y/N)?". The
calibration number of each channel will then appear in each
tonnage display.
Adjust the GAIN ADJUST on the Channel card till the number on
the channel's tonnage display is equal to the calibration
number designated on the load cell.
Clockwise rotation of the channel gain adjustment results in
increasing numbers on the tonnage display.
No calibration number can be displayed for unused channels on
the "portable" System 1100 unit. However, GAIN ADJUST
potentiometers for unused channels to which no load cell is
connected should be turned fully counterclockwise.
14) Check to assure that load cell stacks are correctly located
and that machine shut height of other bottom of stroke
adjustment provides clearance between ram or slide and load
cell stack(s) as per the instructions of step 4 of this
calibration procedure.
Turn on the power to the machine and the installed (permanent)
System 1100 Tonnage Monitor and return the slide to the top of
stroke position.
15) Make single strokes of the machine, adjusting the shut height
or other bottom of stroke adjustments downward to lower the
machine slide or ram from 0.002" to 0.004" between successive
strokes until the "portable" System 1100 tonnage displays give
a reading, indicating that contact is being made with one or
more load cell stacks.