ADLINK PCI-8134A - Manual (Page 30)

20
• Signal Connections
3.2
Encoder Feedback Signals EA, EB and EZ
The encoder feedback signals include the EA, EB, and EZ. Every axis has
six pins for three differential pairs of phase-A (EA), phase-B (EB) and index
(EZ) input. The EA and EB are used for position counting; the EZ is used
for zero position index. The relative signal names, pin numbers and the axis
number are shown in the following tables.
CN2 Pin No Signal Name Axis # CN2 Pin No Signal Name Axis #
13 EA1+

63 EA3+

14 EA1-

64 EA3-

15 EB1+

65 EB3+

16 EB1-

66 EB3-

31 EA2+  81 EA4+ 
32 EA2-

82 EA4-

33 EB2+

83 EB4+

34 EB2-

84 EB4-

CN2 Pin No Signal Name Axis # CN2 Pin No Signal Name Axis #
17 EZ1+

67 EZ3+

18 EZ1-

68 EZ3-

35 EZ2+

85 EZ4+

36 EZ2-

86 EZ4-

The input circuits of the EA, EB, EZ signals are shown as follows.
Please note that the voltage across every differential pair of encoder input
signals (EA+, EA-), (EB+, EB-) and (EZ+, EZ-) should be at least 3.5V or
higher. Therefore, you have to take care of the driving capability when
connecting with the encoder feedback or motor driver feedback. The
Motion ASIC
EA, EB
EZ
EA+, EB+,
EZ+
EA-, EB-
EZ-
R
CN2
Inside PCI-8134/PCI-8134A