FEC AFC1200 - Manual (Page 41)

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The "accept" window always appears at
the far right of the screen, in accordance
with the High Angle value. High and low Angle limits
(25 ~ 10 degrees) and high
and low Torque (39 ~ 27 Nm) Accept window (seen in
the plot area of Fig. 7-4-4)
(Fastening Curve end)
Axis range displays highest reading as 25
Degrees. Overall range reflects as 200
(from -175 ~ +25), and is a product of
Angle Scale (200) x Divide(Angle) (1).
The overall range (200) divided by the
default number of tick marks (10) results
in 20-degree increments between tick
marks. Starting with 25 degrees at the
right side of the chart, the tick mark
values increment downward to -175. The
fastening Final Angle value (13.7) can be
read directly from the axis scale. High Angle limit: 25 Deg. (Set
Parameter), "200" Angle
Scale, and "1" Divide(Angle) Horizontal "X" Axis Range
(Angle)
Axis range displays highest reading as
46.80 Nm (39 Nm high Torque x 1.2),
and the low defaults to zero (0). The
overall range (46.8) divided by the default
number of tick marks (8) results in 5.85
Nm increments between tick marks.
Starting with 46.8 Nm at the top of the
chart, the tick mark values increment
downward to zero (0). The plotted
Torque values can be read directly from
the axis scale. High Torque limit: 39 Nm
(setup in Set Parameter) Vertical "Y" Axis Range
(Torque)
Up to five (5) spindles can display a curve
at the same time, each in a different
color. If Spindle No. 02 or 03 had a
different Parameter Number, it would not
display. Axis ranges & "accept" window
setups are identical. 01, 02, & 03 chosen (Spindle
Select pulldown). Note: All
spindles are using the same
Parameter Number, as
required. Spindle No.
For each one (1) degree of rotation
(angle), one of the 200 points will be
plotted (see "Angle Scale", above). 1 Divide(Angle)
SETTING RESULTS SETTING SCREEN DISPLAY
6-2. Time - The range and the high end of the scale on this horizontal "X" axis is
determined by the TIME SCALE and DIVIDE (TIME) values as set on the [SCALE]
pulldown menu. The low end of the axis scale is zero (0).
The TIME SCALE setting represents the number of samples (Torque/Time readings)
to be plotted for each fastening. A Time Scale setting of 200 will result in a Fastening
Curve with 200 points (Torque/Time readings) plotted on the graph for each
fastening.
The DIVIDE(TIME) setting represents the sampling frequency in milliseconds. A
DIVIDE(TIME) setting of "10" would result in a Fastening Curve with Torque/Time
readings plotted on the graph after every ten (10) milliseconds (.01 seconds).
The TIME SCALE (number of samples plotted) multiplied by the DIVIDE(TIME)
(length of time between samples) is equal to the range shown on the Time axis. This
scale does not reflect "actual" time values (milliseconds) and cannot be used as a
direct reference to interpret the value of plotted points. To use the axis scale to
determine (approximate) Fastening Curve duration, the beginning (Fastening Curve
start) point must be subtracted from the value of the final (Fastening Curve end)
point.
Chapter 7: System Operation
Page 7-41