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Safety Precautions
Legislation and Standards
As serious injury may occur due to loss of required safety function,
ATTENTION
follow these safety precautions.
Do not use test outputs of the modules as safety outputs.
Do not use DeviceNet standard I/O data or explicit message data
as safety data.
Do not use LED indicators on the safety I/O modules for safety
operations.
Do not connect loads beyond the rated value to the safety
outputs.
Wire the safety I/O modules properly so that 24V dc line does not
touch the safety outputs accidentally or unintentionally.
Ground the 0V line of the power supply for external output
devices so that the devices do not turn on when the safety output
line is grounded.
Clear previous configuration data before connecting devices to
the network.
Set suitable node addresses before connecting devices to the
network.
Perform user testing and confirm that all of the device
configuration data and operation is correct before starting system
operation.
When replacing a device, configure the replacement device
suitably and confirm that it operates correctly.
When installing or replacing modules, clear any previous
configuration before connecting input or output power to the
device.
Read this section to familiarize yourself with related legislation and
standards information. Relevant international standards include the
following:
IEC 61508 (SIL 1-3)
IEC 61131-2
IEC 60204-1
IEC 61000-6-2
IEC 61000-6-4
The modules received the following certification from ODVA, when
product is marked.
DeviceNet Conformance Test
DeviceNet Safety Conformance Test
Understand the Operation of Safety Functions
Publication 1791DS-UM001H-EN-P - April 2009
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