Understanding control signal specifications, Digital inputs – Rockwell Automation 2198-Hxxx Kinetix 5500 Servo Drives User Manual User Manual

Page 62

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Rockwell Automation Publication 2198-UM001D-EN-P - May 2014

Chapter 4

Connector Data and Feature Descriptions

Understanding Control
Signal Specifications

This section provides a description of the Kinetix 5500 digital inputs, Ethernet
communication, power and relay specifications, encoder feedback specifications,
and safe torque-off features.

Digital Inputs

Two digital inputs are available for the machine interface on the IOD connector.
Digital inputs require a 24V DC @ 15 mA supply. These are sinking inputs that
require a sourcing device. A common and cable shield connection is provided on
the IOD connector for digital inputs.

The Registration 1 input is capable of dual functionality. You can also use this as
the Home input. Configuration for dual functionality is not needed.

Table 25 - Understanding Digital Input Functions

Table 26 - Digital Input Specifications

IMPORTANT

To improve registration input EMC performance, refer to the System Design for
Control of Electrical Noise Reference Manual, publication

GMC-RM001

.

Function

Description

Default Behavior

Home/Reg1

An active state indicates to a homing sequence that the referencing
sensor has been seen. Typically, a transition of this signal is used to
establish a reference position for the machine axis.

The function is always inactive. You can enable in the Logix
Designer application.

Registration 1

An inactive-to-active transition (also known as a positive transition) or
active-to-inactive transition (also known as a negative transition) is
used to latch position values for use in registration moves.

Registration 2

Attribute

Value

Type

Active high, single-ended, current sinking (EN 61131-2 Type 1)

Dedicated functions

Registration 1, Home, Registration 2

Input current (with 24V applied)

12 mA, typical

On-state input voltage

15…30V @ 15 mA, max

Off-state input voltage

-1.0…5.0V

Pulse reject filtering (registration functions)

12.0 μs

Pulse reject filtering (home input function) debounce filter

20 ms, nom

Propagation delay (registration functions)

0 (delay compensated)

Registration repeatability

700 ns

Windowed registration invalid-to-valid event delay

125 μs, min

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