FANUC Power Mate i-MODEL H CONNECTION MANUAL (HARDWARE)

B63173EN/03
9. CONNECTION TO SERVO OR SPINDLE
327
The standard of the feedback signal from the separate detector is as shown
below.
(1)A and B phase signal input
This is a method to input position information by the mutual 90 degree
phase slip of A and B phase signals.
Detection of the position is performed with the state in which the B phase
is leading taken as a shift in the plus direction, and the state in which the
A phase is leading as a shift in the minus direction.
Shift in plus direction
Shift in minus direction
A phase signal
B phase signal
A phase signal
B phase signal
(2)Phase difference and minimum repeat frequency
Td
Td
Td
Td
0.5V
A
B
Tp
PCA/*PCA
*PCA/PCA
PCB/*PCB
*PCB/PCB
0.5V
Requirements for the signals at the input pins of input connectors JF101
to JF108
TD y 0.15 µsec
The signals for these connectors are differential input signals with A and
B phases. An important factor is time TD from point A, when the
potential difference between PCA and *PCA exceeds 0.5V, to point B,
when the potential difference between PCB and *PCB becomes lower
than 0.5V. The minimum value of TD is 0.15 µs. The period and pulse
width of the signals must be long enough to satisfy the above
requirements.
9.2.5
Input Signal
Requirements

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