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6. Matters to pay attention
1. In normal type, if the range to output the signal is so small or an axis moves so fast that the
high-speed position switch may not output.
To avoid above, it is necessary to meet the following condition.
(When used unit is “inch” or “deg”, replace “mm” part with “inch” or “deg”.)
In judging a passing direction type, there is a similar restriction. If the direction to turn on at
point A is the same as to turn off at point B, the difference between the point A and B must be
set larger than the left part of above expression.
2. In rotary axis, feedrate must be given less than n×10000 (deg/min). (n: moving distance per
one rotation) If feedrate is faster than above value, the high-speed position switch may not
work correctly.
3. When normal type is used in a rotary axis, the range can be set to go across the point of 0
degree.
Ex) In order to turn on the high-speed position switch within the range from 350 degree to
10 degree when one rotation is 360 degree, the minimum value should be set to 350
degree and the maximum value should be set to 10 degree.
4. In case the high-speed position switch is used in a rotary axis, the switch may not work
correctly if the point to turn on/off the switch is set to near 0 degree where the coordinate of
rotary axis is rounded. The point to turn on/off the switch should be set away from over the
following distance from the point to round the coordinate.
Feedrate (Unit is mm in when feedrate unit is mm/min, inch
30000 when inch/min and deg when deg/min)
Maximum speed (mm/min)
< Valid range ( maximum value(mm)-minimum value(mm) )
30000
5. When the compulsory input/output function of PMC is used, the high-speed position switch
may not work correctly.
Ed
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Date Sign
Contents
FANUC Power Mate i-MODEL D/H
High Speed Position Switch
specifications
B-63173EN-1/01-31
TITLE
DRAWING
6. When the reference point is not established or an axis looses the reference point, the status of
the high-speed position switch of that axis is locked with keeping the status. When the
parameter No.1203#1 is turned on, it can be confirmed by the reference point establishment
signal (ZRF1 to ZRF8) whether the reference point is established or not.