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Rockwell Automation Publication 2198-UM002E-EN-P - February 2018
Chapter 4
Connector Data and Feature Descriptions
Understand Control Signal
Specifications
This section provides a description of the Kinetix 5700 digital inputs, Ethernet
communication, power and relay specifications, encoder feedback
specifications, and safe torque-off features.
Digital Inputs
Digital inputs are available for the machine interface on the IOD connector.
Two for the DC-bus power supply, four for the single-axis inverter, and four
per axis for the dual-axis inverters. Digital inputs require a 24V DC @ 15 mA
supply. These are sinking inputs that require a sourcing device. A common
connection is provided on the IOD connector for each of the digital inputs.
Table 32 - Understand Digital Input Functions
IMPORTANT
To improve registration input EMC performance, refer to the System Design
for Control of Electrical Noise Reference Manual, publication
.
Functions
Description
(2)
Enable
A 24V DC input is applied to this terminal as a condition to enable each module.
Home
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.
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
Positive overtravel
Negative overtravel
The positive/negative limit switch (normally closed contact) inputs for each axis require 24V DC (nominal).
Regeneration OK
(1)
In the active state the inverters can be enabled. An inactive state indicates that the Bulletin 8720MC-RPS unit is not ready to supply DC-bus power. The
inverters cannot be enabled.
When a bus group is supplied by an 8720MC-RPS unit, one inverter in the bus group must be configured in the Logix Designer application as Shared-DC
Non-CIP Motion™ Converter and assigned to Regenerative OK. This signal is wired from RDY on the 8720MC-RPS unit and indicates to the Kinetix 5700
drive system that the 8720MC-RPS unit is ready to supply power. Enabled inverters enumerate a Bus Power Sharing fault if the Regeneration OK input
goes inactive.
Shunt thermal
switch OK
When the 2198-R014, 2198-R031, or 2198-R127 external shunt resistor is wired to the DC-bus power supply, this input must be configured in the Logix
Designer application to monitor the status of the external shunt module thermal switch and assigned to Shunt thermal switch OK. This function does not
apply to the 2198-R004 shunt resistor. You can also use this input to monitor the status of an active shunt module in the system that is connected via the
capacitor module or an extension module.
Bus capacitor OK
You can configure this input in the Logix Designer application and wire the module status (MS) relay output from the 2198-CAPMOD-2240 capacitor
module to indicate to the inverter that a major fault is present on the capacitor module.
(1) For more information on configuring a Shared-bus Non-CIP Motion Converter, refer to
. For more information on wiring the 8720MC-RPS unit, refer to
.
(2) The function is always inactive unless assigned to a digital input in the Logix Designer application. For more information on configuring a Regeneration OK, Shunt thermal switch OK, or Bus capacitor
OK, refer to
.