Copley Controls Accelnet Plus AEV-090-14 User Manual page 86

Accelnet Plus Micro Modules User Guide
Analog Sin/Cos Incremental Encoder
The Sin Cos inputs are differential with 121 Ω terminating resistors and accept 1 Vp-p signals in
the format used by incremental encoders with analog outputs. The index input is digital.
SSI Absolute Encoder
The SSI (Synchronous Serial Interface) is an interface used to connect an absolute position
encoder to a motion controller or control system. The drive provides a train of clock signals in
differential format to the encoder which initiates the transmission of the position data on the
subsequent clock pulses. The polling of the encoder data occurs at the current loop frequency
(16 kHz). The number of encoder data bits and counts per motor revolution are programmable.
The hardware bus consists of two signals: SCLK and SDATA. Data is sent in 8 bit bytes, LSB
first. The SCLK signal is only active during transfers. Data is clocked out on the falling edge and
clock in on the rising edge of the Master.
Copley Controls
Encoder
Sin
Cos
5V
0V
A
5V
0V
P1 AEZ, APZ
2 AEV, APV
GN D
Sin( )
120
Sin( )
C os ( )
120
C os ( )
5 V O ut
SGN D
P1 AEZ, APZ
2 AEV, APV
G
SDATA
1 2 1
SDATA
1 k
5
SC
1 3 0
SC
1 k
5 V E N C 1 (2 )
SG N D
16-01687 Rev 03
Sin
C os
5 0 0 mA
M A 3 3 6 2
A
M A 3 3 6 2
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