Link-systems System 1100 Tonnage Monitor Manuel d'utilisateur télécharger pdf (Page 89)

UNBALANCED LOADS AND SCALE FACTOR

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8-3

ORIGINAL MACHINE RATING

N1 N1

C' = ------------------------- * C

NEW MACHINE RATING

ORIGINAL MACHINE RATING

N2 N2

C' = ------------------------- * C

NEW MACHINE RATING

ORIGINAL MACHINE RATING

N3 N3

C' = ------------------------- * C

NEW MACHINE RATING

and

ORIGINAL MACHINE RATING

N4 N4

C' = ------------------------- * C

NEW MACHINE RATING

N1 N2 N3 N4

where C' , C' , C' , C' , are the new calibration numbers to which

N1 N2

channels 1 through 4 should be adjusted, respectively. C , C ,

N3 N4

C , C , are the original calibration numbers for channels 1 through

4, which were determined by the procedures followed in the Section

6 of this manual.

The following examples illustrate how the System 1100 Tonnage

Monitors on the machines of Examples 1 and 2 of this section can be

set up to permit more tonnage on each channel while retaining

calibration.

Example 3. Following the instructions in the Section 6 of this

manual for the two channel System 1100 unit on the machine of

Example 1 resulted in a machine rating number of 100.0 tons being

programmed into the unit. The calibration numbers were found to be

144 for channel 1 and 148 for channel 2. It is desired to shift

the machine rating alarms on each channel from 62.5 tons (125% of

50 tons for each side) to 70 tons for each channel. To do this,

calculate the new machine rating number (scale factor). The

required number is:

70 tons

MACHINE RATING NUMBER = --------- = 112 tons

1 2 ... 84 85 86 87 88 89 90 91 92 93 94 ... 116 117

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Link-systems System 1100 Tonnage Monitor Manuel d'utilisateur Page 89

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