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DRAW. NO.
CUST.
TITLE
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DESCRIPTIONDESIG.DATE
I/O module type-2 fo
Connector board
Connection manual
A-80950E
FANUC LTD
Cable length for Manual pulse generator
The Manual pulse generator operates on 5VDC. The supply voltage drop due to the
Cable resistance must me held below 0.2V(when 0-volt and 5-volt wires are combined),
as expressed in the following expression:
0.1×R×2L
0.2 ≧
m
Where
0.1: Manual pulse generator supply current(0.1A)
R : resistance per unit cable length (Ω/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.
m
L ≦
R
For Example, when cable A66L-0001-0286 is used.
The cable consists of three pairs of signal lines and six power wires
(20/0.18,0.0394Ω/m).
When these three cables are used for 0V and 5V Lines, the cable length is:
3
L ≦ = 76.75(m)
0.0394
Thus, the length is 76.75m. (Because of applicable regulation of FANUC,
however, the length is limited to 50m)
For two units, the cable can be extended to 38.37m.
For three units, it can be extended to 25.58m.