Rockwell Automation 1791ES-IB16 Guard I/O EtherNet/IP Safety Modules - Manual (Page 11)

Rockwell Automation Publication 1791ES-UM001D-EN-P - May 2013 11
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 15 mm (0.6 in.) around the module to allow adequate
ventilation and room for wiring.
ATTENTION: Use a DC power supply satisfying the following
requirements to prevent electric shock:
• A DC power supply with double or reinforced insulation, for example,
according to IED/EN 60950 or EN 50178 or a transformer according to
IEC/EN 61558
• A DC supply satisfies requirement for class 2 circuits or limited
voltage/current circuit stated in UL 508
• Use an external power supply that is safety extra-low voltage (SELV)
rated
• Follow these precautions for safe use.
• Wire conductors correctly and verify operation of the module before
placing the system into operation. Incorrect wiring can lead to loss of
safety function.
• Do not apply DC voltages exceeding the rated voltages to the
module.
• Apply properly specified voltages to the module inputs. Applying
inappropriate voltages causes the module to fail to perform its
specified function, which leads to loss of safety functions or damage
to the module.
• Never use test outputs as safety outputs. Test outputs are not safety
outputs.
• Note that after installation of the module, a safety administrator
must confirm the installation and conduct trial operation and
maintenance.
• Do not disassemble, repair, or modify the module. This can result in
loss of safety functions.
• Use only appropriate components or devices complying with
relevant safety standards corresponding to the required safety
category and safety integrity level.
- Conformity to requirements of the safety category and safety
integrity level must be determined for the entire system.
- We recommend you consult a certification body regarding
assessment of conformity to the required safety integrity level or
safety category.
• Note that you must confirm compliance with the applicable
standards for the entire system.
• Disconnect the module from the power supply before wiring.
Devices connected to the module can operate unexpectedly if wiring
is performed while power is supplied.