About Ne0A-Series Safety Network Controllers; Introduction To The Ne0A-Series Safety Network Controllers - Omron DeviceNet Safety NE0A Series Operation Manual

About NE0A-series Safety Network Controllers

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About NE0A-series Safety Network Controllers

1-1-1

Introduction to the NE0A-series Safety Network Controllers

Monitoring safety controls using standard
I/O communications and explicit
message communications
Non-safety Controls (Standard Controls)
Standard PLC
Standard Master
Standard Slave
Local safety output
controls using logic
operations
2
NE0A-series Safety Network Controllers are programmable safety logic con-
trollers. They are designed for small-scale safety control and provide functions
such as safety logic operations, safety local I/O control functions, and
DeviceNet Safety Slave communications.
An NE0A-series Controller allows the user to construct safety control circuits
that meet the requirements for Safety Integrity Level 3 (SIL 3) according to
IEC 61508 (Functional Safety of Electrical/Electronic/Programmable Elec-
tronic Safety-related Systems) and the requirements for Safety Category 4 of
EN 954-1.
As shown in the following example system configuration, a safety distributed
control system can be constructed with an NE0A-series Controller for each
safety control block. With this system, the following operations are enabled.
• As Safety Logic Controllers, the NE0A-series Controllers execute safety
logic operations and directly control local safety outputs.
• As DeviceNet Safety Slaves, the NE0A-series Controllers perform safety
I/O communications with the NE1A-series DeviceNet Safety Master.
• As a DeviceNet Standard Slave, the NE0A-series Controller communi-
cates with the DeviceNet Standard Master.
Emergency
stop switch
Safety Master
Standard
communications
Safety Slave
NE0A
Emergency
stop switch
Safety light curtain
Safety Control Sub-block 1
Main Safety Control Block
Safety light curtain
Contactor
Safety communications
NE0A
Contactor
Emergency
stop switch
Safety Control Sub-block 2
Section 1-1
Used in common for
interlock signals, based on
safety I/O communications
Network
Configurator
DeviceNet
Safety Slave
USB connection for
Network Configurator
Contactor
Safety
door switch