Rockwell Automation 1791DS-IBxxxx Guard I/O DeviceNet Safety Modules - Manual (Page 17)

Rockwell Automation Publication 1791DS-UM001J-EN-P - May 2013 17
About the Modules Chapter 1
Precautions to Mount, Wire,
and Clean Observe these precautions to prevent operation failure, malfunctions, or
undesirable effects on product performance.
Follow these precautions when mounting modules:
• Use DIN rail that is 35 mm (1.38 in.) wide to mount the module into the
control panel.
• Mount modules to DIN rail securely.
• Leave at least 50 mm (1.96 in.) above and below the module to allow
adequate ventilation and room for wiring for 1791DS-IB12, 1791DS-
IB8XOB8, and 1791DS-IB4XOW4 modules.
• Leave at least 15 mm (0.6 in.) around the module to allow adequate
ventilation and room for wiring for 1732DS-IB8, 1732DS-IB8XOBV4,
1791DS-IB8XOBV4, and 1791DS-IB16 modules.
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.
• Do not remove the shield from a module before wiring, but always remove
the shield after completing wiring to be sure of proper heat dispersion for
1791DS-IB12, 1791DS-IB8XOB8, and 1791DS-IB4XOW4 modules.
• Follow torquing specifications as indicated in the installation instructions.
When cleaning modules, do not use the following:
• Thinner
• Benzene
• Acetone
I/O Module Overview The Guard I/O modules implement the CIP-safety protocol extensions over
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 954-1
standard, Safety of machinery - Safety related parts of control systems. All
1791DS modules can be mounted vertically or horizontally.
Remote I/O communication for safety I/O data are performed through safety
connections supporting CIP safety over a DeviceNet network. Data processing is
performed in the safety controller.
The status and fault diagnostics of Guard I/O modules are monitored by a safety
controller through a safety connection using a new or existing DeviceNet
network.