
B–63323EN/03
7. CONNECTION TO CNC PERIPHERALS
281
Recommended connector:
A02B–0120–K303 (includes the following body and housing)
(Body: FI40–2015S, soldering type, from Hirose Electric Co., Ltd.)
(Housing: FI40–20–CV5, from Hirose Electric Co., Ltd.)
NOTE
Since some pins of this connector, unlike other 20–pin
connectors, have been removed, resulting in a unique pin
arrangement, be careful when identifying pin numbers. See
Figure 2 in Appendix B and Table C (a) in Appendix C.
D Manual pulse generator cable
Like a pulse coder, the manual pulse generator operates on 5VDC. The
supply voltage drop due to the cable resistance must be held below
0.2V (when those of the 0V and 5V wires are combined), as expressed
in the following expression:
0.2 y (0.1 R 2L)/m
Where
0.1: manual pulse generator supply current 0.1 A
R: resistance per unit cable length (Ω/m)
m: number of 0V and 5V wires
L: cable length (m).
Therefore, the cable length can be determined using the following
expression:
L x m/R
In the case of the A66L–0001–0286 cable developed for the
FS15/16/18 pulse coder interface, when three pairs of signal wires and
six power source wires (20/0.18, 0.0394 Ω/m) are used (three power
source wires connected to 5V and the other three to 0V), the cable
length is:
L x 3/0.0394 = 76.75 [m]
However, the maximum pulse transmission distance for the manual
pulse generator is 50m. So, the cable length may be extended to 50 m.