
0.2
u
+
0.1 R 2L
m
L
t
+
m
R
L
t
+
3
0.0394
+ 76.75[m]
B–64193EN/01
8. CONNECTION TO FANUC I/O Link
139
(These cables do not include the wire shown in the above figure.)
NOTE
The number of connectable manual pulse generators
depends on the type and option configuration.
Like a pulse coder, the manual pulse generator operates on 5 VDC. The
supply voltage drop due to the cable resistance must be held below 0.2 V
(when those of the 0–volt and 5–volt wires are combined), as expressed
in the following expression:
Where
0.1 = manual pulse generator supply current (0.1 A)
R = resistance per unit cable length (W/m)
m = number of 0–volt and 5–volt wires
L = cable length (m).
Therefore, the cable length can be determined using the following
expression.
In the case of the A66L–0001–0286 cable, for example, when three pairs
of signal wires and six power supply wires (20/0.18, 0.0394 W/m) are
used (three power supply wires connected to 5 V and the other three to 0
V), the cable length is:
However, the maximum pulse transmission distance for the manual pulse
generator is 50 m. Taking this into consideration, the cable length may
be extended to:
38.37 m (when two generators are used), or
25.58 m (when three generators are used).
8.4.16
Cable Length for
Manual Pulse
Generator