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Rockwell Automation Publication 1734-UM013C-EN-P - August 2010
Chapter 1
POINT Guard I/O Overview
Precautions to Mount,
Wire, and Clean
Observe these precautions to prevent operation failure, malfunctions, or
undesirable effects on product performance.
Follow terminal base instructions for insertion and removal.
Follow these precautions when wiring modules:
•
Do not place communication lines and I/O lines in the same wiring duct
or track as high voltage lines.
•
Wire correctly after confirming the signal names of all terminals.
•
Follow torquing specifications as indicated in the terminal base installation
instructions.
When cleaning modules, do
not
use the following:
•
Thinner
•
Benzene
•
Acetone
I/O Module Overview
The POINT Guard I/O modules implement the CIP-safety protocol extensions
over EtherNet/IP and DeviceNet networks and provide various features for a
safety system.
Use the modules to construct a safety-control network system that meets the
requirements up to Safety Integrity Level 3 (SIL 3) as defined in IEC 61508,
Functional Safety of Electrical, Electronic, and Programmable Electronic Safety-
related Systems, and the requirements for Safety Category 4 of the EN ISO
13849-1 standard.
Distributed I/O communication for safety I/O data is performed through safety
connections supporting CIP safety over an EtherNet/IP or DeviceNet network.
Data processing is performed in the safety controller.
The status and fault diagnostics of POINT Guard I/O modules are monitored
by a controller. This is a list of features common to POINT Guard I/O modules:
•
Safety inputs
–
Safety devices, such as emergency stop push buttons, gate switches, and
safety light curtains, can be connected.
–
Dual-channel mode evaluates consistency between two input signals
(channels), which allows use of the module for Safety Category 3 and 4
and in applications rated up to and including Performance Level e.
–
The time of a logical discrepancy between two channels can be
monitored by using a discrepancy time setting.
–
Single-channel mode for SIL 2 rated safety devices and applications.
–
An external wiring short-circuit check is possible when inputs are wired
in combination with test outputs. The module must be wired in
combination with test outputs when this function is used.