AMCI NR60E2, Руководство пользователя

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NR60E2 User Manual
NR60 S
PECIFICATIONS
17
Programmable Parameters (continued)
Total Measurement Range (continued)
Roll Over on Fractional Number of Turns
When the Total Measurement Range is less than the total counts available from the NR60E2, the position will
return to zero before the full mechanical travel is completed.

When the Scaling Function Control parameter disables the Counts Per Turn and Total Measurement
Range parameters, the total counts available equals 65,536 multiplied by the number of turns the
NR60E2 can encode.

When the Scaling Function Control parameter enables the Counts Per Turn and Total Measurement
Range parameters, the total counts available equals the value of the Counts per Turn parameter multi-
plied by the number of turns the NR60E2 can encode.
Figure R1.6 Fractional Turn Example 1
Figure R1.6 shows what occurs when the Total Measurement Range parameter is used to divide the total
counts available from the NR60E2 into equal parts. In this case, a twenty-eight bit NR60E2 has its 4,096
turns evenly divided into five cycles of 819.2 turns.
If the value of {Total Counts ÷ Total Measurement Range } is an integer, the NR60E2 remains
an absolute rotary sensor. You can remove power from the NR60E2, rotate it up to its maxi-
mum number of turns, re-apply power, and the NR60E2 will give you the correct position
value. Figure R1.6 is an example of this setup because the division of the two parameters
results in a quotient value of five.
28 bit NR60E2: 4096 Turns
Counts Per Turn = 1,000 Counts
Total Counts = 4,096,000
0
0 0 0 0
0
Total Measurement Range = 819,200 Counts
NR60 outputs five cycles of counts from 0 to 819,199 over 4,096 turns