HEIDENHAIN TNC 335 Technical Manual - Manual (Page 63)

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TNC 360 10 Handwheel input 3-37
10.5 HRA 110 Handwheel Adapter
The HRA 110 permits two or three HR 150 handwheels to be connected to an LE.
The first two handwheels are permanently assigned to the X and Y axes. The third handwheel can
be assigned to the X, Y, Z or IV axes either through an optional step switch or via machine
parameter. (See Section "Handwheel" in Chapter "Machine Integration").
HRA 110
X3
X2
X1
LE X11 X23
S1
X31 24 V
Achswahl (Option)
AXIS SELECTION (OPTIONAL)
Unterteilungsfaktorwahl (Option)
INTERPOLATION FACTOR (OPTIONAL)
max. 50 m
Id.-Nr. 270 909..
HR 150
S2
max. 20 m
Another step switch (optional) is available for selecting the interpolation factor of the handwheels.
The interpolation factor of the switch must be evaluated in the PLC and is displayed on the TNC
screen, but it cannot be changed via TNC keyboard. If the handwheels are mounted without the step
switch, however, the interpolation factor is selected for each axis via TNC keyboard.
Pin layout
Handwheel inputs X1, X2, X3
Pin Number Assignment
1 I
1
+
2 I
1
–
5 I
2
+
6 I
2
–
7 I
0
+
8 I
0
–
3 + 5 V (U
P
)
4 0 V (U
N
)
9 Inner screen
Housing Outer screen