
High Resolution Serial Output
Circuit
3 9
FANUC LTD
A-56731E-0079
DescriptionDesig.DateEdit.
01 97.01.30 MAEDA Taniguchi
title
Sheet
Draw. No.
(4)Input specifications and examples of available linear encoders
(4)-1 Input specifications
A/B(type
)
A/B
type
Item Symbol Specification
Min.
Specification
Typ.
Specification
Max.
Unit
Amplitude
(A/B phase
type a of A,B phase
type
b of A phase+b of XA phase,
b of B phase+b of XB phase
0.6 1.0 1.5 V
P-P
Amplitude
(Z phase)
c pf Z pahse + c of XZ phaseZ
In case of analog signals
0.2 0.4 V
Center Level
(DC Level)
type V
OA,
V
XA
,V
OB,
V
XB
type V
OA,
V
OXA
,V
OB,
V
OXB
V
OZ,
V
OXZ
2.0 2.5 3.0 V
Offset Voltage
(A/B phase)
type V
OA
V
XA
, V
OB
V
XB
type V
OA
V
OXA
, V
OB
V
OXB
-0.1 0 +0.1 V
Offset Voltage
(Z phase)
V
OZ
V
OXZ
-0.05 0 +0.05 V
Pulse width of Z T
Z
600 nSec
Length of Z L
Z
1/4 pitch of A(or
B)
Input Impedance 100 120 140
Input Frequency 200 kHz
* The position accuracy depends on the quality of the signal from the encoder.
V
A
V
XA,
V
XB
V
B
V
OA,
V
OB
a/2
a/2
a
V
XB
V
B
V
OA,
V
OXA
V
OB,
V
OXB
b/2
b/2
b
V
A
V
XA
c/2
c/2
Usable
component
c
0V
0V
0V
V
OZ
T
Z,
L
Z