April 27, 2004 Manual Version 1.01
8.5
When load cell tonnages are equalized, again repeat the cycle of single stroking the machine with shut
height or other bottom of stroke adjustment between strokes and continue to observe the tonnage on
each load cell It may be necessary to re-shim certain load cell stacks to equalize tonnage on all load
cells as rated tonnage capacity of the machine is neared. Rated machine capacity of the machine is
reached when individual tonnage on load cells equals the rated machine tonnage divided by the
number of load cells used to calibrate the machine. For example, if four (4) load cells are used to
calibrate a 200 ton mechanical power press, the press is loaded to capacity when each of the four load
cells is loaded to 50 tons. When rated machine tonnage, or a lesser tonnage at which the machine is
to be calibrated is reached, lock shut height adjustments, etc., and proceed to step “l”.
Do not exceed rated tonnage capacity of the machine or load cells during the calibration process by
more than five or ten percent.
Vibratory motion in the machine often introduces stroke to stroke variations of one or two percent in
the load cell tonnage readings. When this happens it is impractical to try to refine the load on the
machine any closer than within one or two percent of rated tonnage.
l) After loading the machine to the tonnage at which it is to be calibrated as per step “k” of this
calibration procedure, access the T/M Configuration menu of the OmniLink II Tonnage Monitor
Module and select Calibration and Channel Description (refer to Section 5.3) to enter the Dynamic
Calibration mode.
For a two channel OmniLink II tonnage monitor module:
Turn the RUN/PROG keyed selector switch to the RUN position and make single strokes of the
machine. The display will update the channel and total tonnage display each stroke. Between
strokes, switch the RUN/PROG keyed selector switch to the PROG position and enter cal. #s for
both channels until channel 1 and channel 2 tonnages of the OmniLink II tonnage monitor
module are within one or two percent of one-half (1/2) the sum of the load cell readings.
For a four channel OmniLink II tonnage monitor module:
Turn the RUN/PROG keyed selector switch to the RUN position and make single strokes of the
machine. The display will update the channel and total tonnage display each stroke. Between
strokes, switch the RUN/PROG keyed selector switch to the PROG position and enter cal. #s for
all channels until all four channel tonnages of the OmniLink II tonnage monitor module are within
one or two percent of one-fourth (1/4) the sum of the load cell readings
Содержание OmniLink II
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