Dc link module, Drive interface module, Communication specifications – Rockwell Automation 1326 Digital AC Multi-Axis Motion Control System User Manual User Manual

Page 209: Encoder input specifications

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Publication 1394-5.0 — May 2000

Specifications

A-11

DC Link Module

The power dissipation for the 1394-DCLM is shown below.

Drive Interface Module

The power dissipation for the 1394-DIM is shown below.

Internal Shunt Resistor for the 5 and 10 kW System (standard)

When the shunt resistor inside 1394x-SJT05 and 1394x-SJT10 system
module is active, some additional power will be dissipated at the
system module. Its maximum dissipation is 200W. Most applications
will use less than 10% of this capacity.

Communication Specifications

The communication specifications are listed in the tables starting
below.

Encoder Input Specifications

The table below lists the encoder input specifications for the system
module (1394x-SJTxx-C-xx, -L-xx, and -T-xx systems).

The:

For the 1394-DCLM is:

Power dissipation

4.225 W maximum

The:

For the 1394-DIM is:

Power dissipation

30 W maximum

The:

Is:

Rating of the internal shunt resistor

200W continuous, 40,000W peak (two second
maximum on time)

Resistance of the internal shunt resistor

16 ohms

The:

Is:

Number of encoder inputs

4 (axis 0, 1, 2, and 3) for 1394

x-SJTxx-C-xx and -T-xx systems

2 (axis 0 and 1) for 1394C-SJT

xx-L-xx systems

Type of encoder input

Incremental AB quadrature; optically isolated, differential
with marker channel

Encoder interface IC

AM26LS32 or equivalent

Compatible encoder types

Differential, TTl-level (5V DC) line driver outputs, with or
without marker

Decode modes

4 times quadrature, step/direction, count up/count down

Maximum encoder frequency

4,000,000 counts per second (4 MHz). This is equivalent to
a channel frequency of 1 MHz in 4x quadrature decode mode.

Input impedance

7 kohms minimum (each input)

Encoder power

5V DC @ 1A, user supplied

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