Emerson Digitax ST User Manual

Safety
Information
Product
information
Mechanical
installation
Electrical
installation
Getting
started
Basic
parameters
Running
the motor
Optimization
EtherCAT
interface
SMARTCARD
Operation
Onboard
PLC
Advanced
parameters
Technical
Data
Diagnostics
UL listing
information
68 Digitax ST User Guide
Issue: 5
7.4 Setting up a buffered encoder output
The Digitax ST has a buffered encoder output, which derives its position
from the drive encoder input.
The buffered encoder output is sourced from the drive encoder input and
can be any incremental type or any SINCOS type.
No output is available if EndAt only or SSI communications only
encoders are used
If a SINCOS is used as the source the buffered output is derived from
the zero crossings of the sine waves and does not include interpolated
information. The buffered encoder output provides an output with
minimal delay from the drive encoder input (maximum delay is 0.5 µs). If
the source encoder does not have a marker pulse then no marker pulse
can be obtained from the buffered encoder output.
This section shows the parameter settings required for the buffered
Encoder output.
Pr 3.54 selects the type of buffered encoder output as shown in Table 7-
5:
Table 7-5 Buffered encoder output type
The buffered encoder output can be scaled using Pr 3.52 as shown in
the table below:
For more information on the parameters mentioned above please refer
to the Advanced User Guide.
Pr 3.54 String Mode
0 Ab Quadrature outputs
1 Fd Frequency and direction outputs
2 Fr Forward and reverse outputs
3 Ab.L Quadrature outputs with marker lock
4Fd.L
Frequency and direction outputs with
marker lock
Pr 3.52 Ratio
0.0312 1/32
0.0625 1/16
0.1250 1/8
0.2500 1/4
0.5000 1/2
1.0000 1
NOTE

Emerson Digitax ST Specifications

General

Brand	Emerson
Model	Digitax ST
Category	Controller
Language	English