D-2
DeviceNet Safety System
Complies with the Highest Safety Standards in the world
The DeviceNet Safety System conforms to IEC 61508 SIL3 for functional safety, and EN 954-1 Category 4 for machine safety,
complying with the world's highest level of safety standards.
IEC 61508 SIL 3
Safety circuits must be able to function to provide safety at anytime.
Conversely, the degree of lack of safety is used as the indicator. In
IEC 61508, safety is defined as the Probability of Failure per Hour, or
PFH. Based on this, the SIL (Safety Level) is classified into four lev-
els. SIL 3 indicates a probability of dangerous failure of once in 1,000
years, which is the highest level in machine safety.
EN 954-1 Safety Category 4
EN standards evaluate the level of machine risk and require the incor-
poration of risk minimization measures. In EN 954-1, five safety cate-
gories have been established, with Safety Category 4 indicating
designs that require the highest safety design level. This category is
demanded for machines with the highest level of danger, wherein "se-
rious injury (severed limbs, death, etc.) will occur frequently, with little
chance of escaping danger." This category demands that a single
fault (failure) in any part of the machine, or a series of faults, will not
lead to loss of the machine's safety functions.
NE1A-SCPU01 Safety Network Controller
Programmable Safety Control
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Incorporates 16 safety inputs and 8 safety outputs.
Functions as a compact safety PLC even without using a network.
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Construct safety circuits easily with special Function Blocks.
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Up to 128 Function Blocks can be used.
DeviceNet Safety Communications Functions
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Provides DeviceNet Safety Master functionality.
Connect up to 16 Safety Slaves.
Expand using up to sixteen Input Slaves with 12 points each
(192 points total) and eight I/O Slaves with 16 points each
(128 points total).
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Safety Slave functionality is also included. Interlock control can
be incorporated between Safety Network Controllers.
DeviceNet Slave Functionality
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Monitor safety I/O and status information from the DeviceNet
Master.
DST1-series Safety I/O Terminals
Safety Input and Safety I/O Models Available
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Safety inputs: 12-point model (DST1-ID12SL-1)
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Safety I/O: 8-point/8-point model (DST1-MD16SL-1)
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Safety I/O: 4-point/4-point (relay outputs) model
(DST1-MRD08SL-1)
DeviceNet Slave Functionality
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Safety I/O and status information can be allocated as a DeviceNet
Slave.
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Maintenance functions are provided for measuring the number of
operations or the operating time for safety devices.
Easy Wiring
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Superior construction and preventive maintenance using clamp
connectors.
WS02-CFSC1-E Safety Network Configurator
Network Configurator Functions
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Includes previous DeviceNet Configurator functions.
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Performs setup for the DeviceNet Safety network configuration.
Programming Functions
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I/O configuration functions for Safety Network Controllers and
Safety I/O Terminals.
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Programming functions for safety circuits.
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Monitor programs.
