2 encoder feedback signals ea, eb and ez, Encoder feedback signals ea, eb and ez – ADLINK PCI-8164 User Manual
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Signal Connections
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3.2 Encoder Feedback Signals EA, EB and EZ
The encoder feedback signals include EA, EB, and EZ. Every axis
has six pins for three differential pairs of phase-A (EA), phase-B
(EB), and index (EZ) inputs. EA and EB are used for position
counting, and EZ is used for zero position indexing. The following
table shows the relative signal names, pin numbers, and axis
numbers.
The diagram below shows the input circuit of the EA, EB, and EZ
signals.
Note that the voltage across each differential pair of encoder input
signals (EA+, EA-), (EB+, EB-), and (EZ+, EZ-) should be at least
3.5V. Therefore, the output current must be observed when con-
necting to the encoder feedback or motor driver feedback to avoid
CN2 Pin No Signal Name Axis # CN2 Pin No Signal Name Axis #
13
EA1+
1
63
EA3+
3
14
EA1-
1
64
EA3-
3
15
EB1+
1
65
EB3+
3
16
EB1-
1
66
EB3-
3
31
EA2+
2
81
EA4+
4
32
EA2-
2
82
EA4-
4
33
EB2+
2
83
EB4+
4
34
EB2-
2
84
EB4-
4
CN2 Pin No Signal Name Axis # CN2 Pin No Signal Name Axis #
17
EZ1+
1
67
EZ3+
3
18
EZ1-
1
68
EZ3-
3
35
EZ2+
2
85
EZ4+
4
36
EZ2-
2
86
EZ4-
4