
In the figure 1, the horizontal axis represents time and the vertical axis
represents the absolute coordinate of the high-speed position switch. The
current position is moved from a to b, c, d and e with passing time.
In this case, the high-speed position switch is turned on/off as shown in
the figure 1 (b).
(1) When an axis moves from the point “a” to the point “b” by way of the boundary
“P1” as shown in the figure 1 (a), a high-speed position switch is turned on because
the passing direction is the same as the specified direction.
(2) When an axis moves to the point “c” by way of the boundary “P2”, a high-speed
position switch is not changed (is kept turning on) because the passing direction is
reverse to the specified direction.
(3) When an axis moves from the point “c” to the point “d” by way of the boundary
“P2”, a high-speed position switch is turned off because the passing direction is the
same as the specified direction.
(4) After that, when an axis moves from the point “d” to the point “e” by way of the
boundary “P1”, a high-speed position switch is not changed (is kept turning off)
because the passing direction is reverse to the specified direction.
•
•
•
The high-speed position switch is effective only in the axis whose
reference point is established.
If the reference point is lost while the position switch is active, the
status of the position switch is kept as it was till the reference point
is established again.
In case that an absolute position detector is used, the status of the
high-speed position switch is not changed while the absolute
coordinate is being established by following up the position of the
absolute position detector. (This follow up is being performed from
the power-on or releasing an APC/servo alarm till the absolute
coordinate is established.) In this following up period, the reference
point is temporarily regarded as not established. The high-speed
position switch will work after this follow up.
ote)
By setting the parameter No.1203#1 to “1” and checking the reference
point establishment signal (ZRF1-ZEF8), whether the reference point is
lost or not can be judged.
Caution
Ed
Page
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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